content/browser/renderer_host/render_process_host_impl.cc

   1 // Copyright 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 // Represents the browser side of the browser <--> renderer communication
   6 // channel. There will be one RenderProcessHost per renderer process.
   7
   8 #include "content/browser/renderer_host/render_process_host_impl.h"
   9
  10 #include <algorithm>
  11 #include <limits>
  12 #include <vector>
  13
  14 #include "base/base_switches.h"
  15 #include "base/bind.h"
  16 #include "base/bind_helpers.h"
  17 #include "base/callback.h"
  18 #include "base/command_line.h"
  19 #include "base/debug/dump_without_crashing.h"
  20 #include "base/files/file.h"
  21 #include "base/lazy_instance.h"
  22 #include "base/location.h"
  23 #include "base/logging.h"
  24 #include "base/metrics/field_trial.h"
  25 #include "base/metrics/histogram.h"
  26 #include "base/process/process_handle.h"
  27 #include "base/profiler/scoped_tracker.h"
  28 #include "base/rand_util.h"
  29 #include "base/single_thread_task_runner.h"
  30 #include "base/stl_util.h"
  31 #include "base/strings/string_number_conversions.h"
  32 #include "base/strings/string_util.h"
  33 #include "base/supports_user_data.h"
  34 #include "base/sys_info.h"
  35 #include "base/threading/thread.h"
  36 #include "base/threading/thread_restrictions.h"
  37 #include "base/trace_event/trace_event.h"
  38 #include "base/tracked_objects.h"
  39 #include "cc/base/switches.h"
  40 #include "components/tracing/tracing_switches.h"
  41 #include "content/browser/appcache/appcache_dispatcher_host.h"
  42 #include "content/browser/appcache/chrome_appcache_service.h"
  43 #include "content/browser/background_sync/background_sync_service_impl.h"
  44 #include "content/browser/bad_message.h"
  45 #include "content/browser/bluetooth/bluetooth_dispatcher_host.h"
  46 #include "content/browser/browser_child_process_host_impl.h"
  47 #include "content/browser/browser_main.h"
  48 #include "content/browser/browser_main_loop.h"
  49 #include "content/browser/browser_plugin/browser_plugin_message_filter.h"
  50 #include "content/browser/cache_storage/cache_storage_context_impl.h"
  51 #include "content/browser/cache_storage/cache_storage_dispatcher_host.h"
  52 #include "content/browser/child_process_security_policy_impl.h"
  53 #include "content/browser/device_sensors/device_light_message_filter.h"
  54 #include "content/browser/device_sensors/device_motion_message_filter.h"
  55 #include "content/browser/device_sensors/device_orientation_message_filter.h"
  56 #include "content/browser/dom_storage/dom_storage_context_wrapper.h"
  57 #include "content/browser/dom_storage/dom_storage_message_filter.h"
  58 #include "content/browser/download/mhtml_generation_manager.h"
  59 #include "content/browser/fileapi/chrome_blob_storage_context.h"
  60 #include "content/browser/fileapi/fileapi_message_filter.h"
  61 #include "content/browser/frame_host/render_frame_message_filter.h"
  62 #include "content/browser/geofencing/geofencing_dispatcher_host.h"
  63 #include "content/browser/gpu/browser_gpu_memory_buffer_manager.h"
  64 #include "content/browser/gpu/compositor_util.h"
  65 #include "content/browser/gpu/gpu_data_manager_impl.h"
  66 #include "content/browser/gpu/gpu_process_host.h"
  67 #include "content/browser/gpu/shader_disk_cache.h"
  68 #include "content/browser/histogram_message_filter.h"
  69 #include "content/browser/indexed_db/indexed_db_context_impl.h"
  70 #include "content/browser/indexed_db/indexed_db_dispatcher_host.h"
  71 #include "content/browser/loader/resource_message_filter.h"
  72 #include "content/browser/loader/resource_scheduler_filter.h"
  73 #include "content/browser/media/capture/audio_mirroring_manager.h"
  74 #include "content/browser/media/media_internals.h"
  75 #include "content/browser/media/midi_host.h"
  76 #include "content/browser/message_port_message_filter.h"
  77 #include "content/browser/mime_registry_message_filter.h"
  78 #include "content/browser/mojo/mojo_application_host.h"
  79 #include "content/browser/navigator_connect/service_port_service_impl.h"
  80 #include "content/browser/notifications/notification_message_filter.h"
  81 #include "content/browser/permissions/permission_service_context.h"
  82 #include "content/browser/permissions/permission_service_impl.h"
  83 #include "content/browser/profiler_message_filter.h"
  84 #include "content/browser/push_messaging/push_messaging_message_filter.h"
  85 #include "content/browser/quota_dispatcher_host.h"
  86 #include "content/browser/renderer_host/clipboard_message_filter.h"
  87 #include "content/browser/renderer_host/database_message_filter.h"
  88 #include "content/browser/renderer_host/file_utilities_message_filter.h"
  89 #include "content/browser/renderer_host/gamepad_browser_message_filter.h"
  90 #include "content/browser/renderer_host/gpu_message_filter.h"
  91 #include "content/browser/renderer_host/media/audio_input_renderer_host.h"
  92 #include "content/browser/renderer_host/media/audio_renderer_host.h"
  93 #include "content/browser/renderer_host/media/media_stream_dispatcher_host.h"
  94 #include "content/browser/renderer_host/media/peer_connection_tracker_host.h"
  95 #include "content/browser/renderer_host/media/video_capture_host.h"
  96 #include "content/browser/renderer_host/memory_benchmark_message_filter.h"
  97 #include "content/browser/renderer_host/pepper/pepper_message_filter.h"
  98 #include "content/browser/renderer_host/pepper/pepper_renderer_connection.h"
  99 #include "content/browser/renderer_host/render_message_filter.h"
 100 #include "content/browser/renderer_host/render_view_host_delegate.h"
 101 #include "content/browser/renderer_host/render_view_host_impl.h"
 102 #include "content/browser/renderer_host/render_widget_helper.h"
 103 #include "content/browser/renderer_host/render_widget_host_impl.h"
 104 #include "content/browser/renderer_host/text_input_client_message_filter.h"
 105 #include "content/browser/renderer_host/websocket_dispatcher_host.h"
 106 #include "content/browser/resolve_proxy_msg_helper.h"
 107 #include "content/browser/service_worker/service_worker_context_wrapper.h"
 108 #include "content/browser/service_worker/service_worker_dispatcher_host.h"
 109 #include "content/browser/shared_worker/shared_worker_message_filter.h"
 110 #include "content/browser/shared_worker/worker_storage_partition.h"
 111 #include "content/browser/speech/speech_recognition_dispatcher_host.h"
 112 #include "content/browser/storage_partition_impl.h"
 113 #include "content/browser/streams/stream_context.h"
 114 #include "content/browser/tracing/trace_message_filter.h"
 115 #include "content/browser/webui/web_ui_controller_factory_registry.h"
 116 #include "content/common/child_process_host_impl.h"
 117 #include "content/common/child_process_messages.h"
 118 #include "content/common/content_switches_internal.h"
 119 #include "content/common/frame_messages.h"
 120 #include "content/common/gpu/gpu_messages.h"
 121 #include "content/common/in_process_child_thread_params.h"
 122 #include "content/common/mojo/channel_init.h"
 123 #include "content/common/mojo/mojo_messages.h"
 124 #include "content/common/render_process_messages.h"
 125 #include "content/common/resource_messages.h"
 126 #include "content/common/site_isolation_policy.h"
 127 #include "content/common/view_messages.h"
 128 #include "content/public/browser/browser_context.h"
 129 #include "content/public/browser/content_browser_client.h"
 130 #include "content/public/browser/navigator_connect_context.h"
 131 #include "content/public/browser/notification_service.h"
 132 #include "content/public/browser/notification_types.h"
 133 #include "content/public/browser/render_process_host_factory.h"
 134 #include "content/public/browser/render_process_host_observer.h"
 135 #include "content/public/browser/render_widget_host.h"
 136 #include "content/public/browser/render_widget_host_iterator.h"
 137 #include "content/public/browser/render_widget_host_view_frame_subscriber.h"
 138 #include "content/public/browser/resource_context.h"
 139 #include "content/public/browser/user_metrics.h"
 140 #include "content/public/browser/worker_service.h"
 141 #include "content/public/common/child_process_host.h"
 142 #include "content/public/common/content_constants.h"
 143 #include "content/public/common/content_switches.h"
 144 #include "content/public/common/mojo_channel_switches.h"
 145 #include "content/public/common/process_type.h"
 146 #include "content/public/common/resource_type.h"
 147 #include "content/public/common/result_codes.h"
 148 #include "content/public/common/sandboxed_process_launcher_delegate.h"
 149 #include "content/public/common/url_constants.h"
 150 #include "device/battery/battery_monitor_impl.h"
 151 #include "device/vibration/vibration_manager_impl.h"
 152 #include "gpu/GLES2/gl2extchromium.h"
 153 #include "gpu/command_buffer/client/gpu_switches.h"
 154 #include "gpu/command_buffer/common/gles2_cmd_utils.h"
 155 #include "gpu/command_buffer/service/gpu_switches.h"
 156 #include "ipc/ipc_channel.h"
 157 #include "ipc/ipc_logging.h"
 158 #include "ipc/ipc_switches.h"
 159 #include "ipc/mojo/ipc_channel_mojo.h"
 160 #include "media/base/media_switches.h"
 161 #include "net/url_request/url_request_context_getter.h"
 162 #include "ppapi/shared_impl/ppapi_switches.h"
 163 #include "storage/browser/fileapi/sandbox_file_system_backend.h"
 164 #include "third_party/icu/source/common/unicode/unistr.h"
 165 #include "third_party/icu/source/i18n/unicode/timezone.h"
 166 #include "third_party/skia/include/core/SkBitmap.h"
 167 #include "ui/base/ui_base_switches.h"
 168 #include "ui/events/event_switches.h"
 169 #include "ui/gfx/switches.h"
 170 #include "ui/gl/gl_switches.h"
 171 #include "ui/gl/gpu_switching_manager.h"
 172 #include "ui/native_theme/native_theme_switches.h"
 173
 174 #if defined(OS_ANDROID)
 175 #include "content/browser/android/child_process_launcher_android.h"
 176 #include "content/browser/media/android/browser_demuxer_android.h"
 177 #include "content/browser/mojo/service_registrar_android.h"
 178 #include "content/browser/screen_orientation/screen_orientation_message_filter_android.h"
 179 #endif
 180
 181 #if defined(OS_WIN)
 182 #include "base/win/scoped_com_initializer.h"
 183 #include "base/win/windows_version.h"
 184 #include "content/common/font_cache_dispatcher_win.h"
 185 #include "content/common/sandbox_win.h"
 186 #include "sandbox/win/src/sandbox_policy.h"
 187 #include "ui/gfx/win/dpi.h"
 188 #endif
 189
 190 #if defined(OS_MACOSX) && !defined(OS_IOS)
 191 #include "content/browser/bootstrap_sandbox_manager_mac.h"
 192 #include "content/browser/browser_io_surface_manager_mac.h"
 193 #endif
 194
 195 #if defined(USE_OZONE)
 196 #include "ui/ozone/public/client_native_pixmap_factory.h"
 197 #include "ui/ozone/public/ozone_platform.h"
 198 #include "ui/ozone/public/ozone_switches.h"
 199 #endif
 200
 201 #if defined(ENABLE_BROWSER_CDMS)
 202 #include "content/browser/media/cdm/browser_cdm_manager.h"
 203 #endif
 204
 205 #if defined(ENABLE_PLUGINS)
 206 #include "content/browser/plugin_service_impl.h"
 207 #endif
 208
 209 #if defined(ENABLE_WEBRTC)
 210 #include "content/browser/media/webrtc_internals.h"
 211 #include "content/browser/renderer_host/media/media_stream_track_metrics_host.h"
 212 #include "content/browser/renderer_host/media/webrtc_identity_service_host.h"
 213 #include "content/browser/renderer_host/p2p/socket_dispatcher_host.h"
 214 #include "content/common/media/aec_dump_messages.h"
 215 #include "content/common/media/media_stream_messages.h"
 216 #endif
 217
 218 #if defined(OS_WIN)
 219 #define IntToStringType base::IntToString16
 220 #else
 221 #define IntToStringType base::IntToString
 222 #endif
 223
 224 namespace content {
 225 namespace {
 226
 227 const char kSiteProcessMapKeyName[] = "content_site_process_map";
 228
 229 #ifdef ENABLE_WEBRTC
 230 const base::FilePath::CharType kAecDumpFileNameAddition[] =
 231     FILE_PATH_LITERAL("aec_dump");
 232 #endif
 233
 234 void CacheShaderInfo(int32 id, base::FilePath path) {
 235   ShaderCacheFactory::GetInstance()->SetCacheInfo(id, path);
 236 }
 237
 238 void RemoveShaderInfo(int32 id) {
 239   ShaderCacheFactory::GetInstance()->RemoveCacheInfo(id);
 240 }
 241
 242 net::URLRequestContext* GetRequestContext(
 243     scoped_refptr<net::URLRequestContextGetter> request_context,
 244     scoped_refptr<net::URLRequestContextGetter> media_request_context,
 245     ResourceType resource_type) {
 246   // If the request has resource type of RESOURCE_TYPE_MEDIA, we use a request
 247   // context specific to media for handling it because these resources have
 248   // specific needs for caching.
 249   if (resource_type == RESOURCE_TYPE_MEDIA)
 250     return media_request_context->GetURLRequestContext();
 251   return request_context->GetURLRequestContext();
 252 }
 253
 254 void GetContexts(
 255     ResourceContext* resource_context,
 256     scoped_refptr<net::URLRequestContextGetter> request_context,
 257     scoped_refptr<net::URLRequestContextGetter> media_request_context,
 258     const ResourceHostMsg_Request& request,
 259     ResourceContext** resource_context_out,
 260     net::URLRequestContext** request_context_out) {
 261   *resource_context_out = resource_context;
 262   *request_context_out =
 263       GetRequestContext(request_context, media_request_context,
 264                         request.resource_type);
 265 }
 266
 267 #if defined(ENABLE_WEBRTC)
 268
 269 // Allow us to only run the trial in the first renderer.
 270 bool has_done_stun_trials = false;
 271
 272 // Creates a file used for diagnostic echo canceller recordings for handing
 273 // over to the renderer.
 274 IPC::PlatformFileForTransit CreateAecDumpFileForProcess(
 275     base::FilePath file_path,
 276     base::ProcessHandle process) {
 277   DCHECK_CURRENTLY_ON(BrowserThread::FILE);
 278   base::File dump_file(file_path,
 279                        base::File::FLAG_OPEN_ALWAYS | base::File::FLAG_APPEND);
 280   if (!dump_file.IsValid()) {
 281     VLOG(1) << "Could not open AEC dump file, error=" <<
 282                dump_file.error_details();
 283     return IPC::InvalidPlatformFileForTransit();
 284   }
 285   return IPC::TakeFileHandleForProcess(dump_file.Pass(), process);
 286 }
 287
 288 // Does nothing. Just to avoid races between enable and disable.
 289 void DisableAecDumpOnFileThread() {
 290   DCHECK_CURRENTLY_ON(BrowserThread::FILE);
 291 }
 292 #endif
 293
 294 // the global list of all renderer processes
 295 base::LazyInstance<IDMap<RenderProcessHost> >::Leaky
 296     g_all_hosts = LAZY_INSTANCE_INITIALIZER;
 297
 298 // Map of site to process, to ensure we only have one RenderProcessHost per
 299 // site in process-per-site mode.  Each map is specific to a BrowserContext.
 300 class SiteProcessMap : public base::SupportsUserData::Data {
 301  public:
 302   typedef base::hash_map<std::string, RenderProcessHost*> SiteToProcessMap;
 303   SiteProcessMap() {}
 304
 305   void RegisterProcess(const std::string& site, RenderProcessHost* process) {
 306     map_[site] = process;
 307   }
 308
 309   RenderProcessHost* FindProcess(const std::string& site) {
 310     SiteToProcessMap::iterator i = map_.find(site);
 311     if (i != map_.end())
 312       return i->second;
 313     return NULL;
 314   }
 315
 316   void RemoveProcess(RenderProcessHost* host) {
 317     // Find all instances of this process in the map, then separately remove
 318     // them.
 319     std::set<std::string> sites;
 320     for (SiteToProcessMap::const_iterator i = map_.begin();
 321          i != map_.end();
 322          i++) {
 323       if (i->second == host)
 324         sites.insert(i->first);
 325     }
 326     for (std::set<std::string>::iterator i = sites.begin();
 327          i != sites.end();
 328          i++) {
 329       SiteToProcessMap::iterator iter = map_.find(*i);
 330       if (iter != map_.end()) {
 331         DCHECK_EQ(iter->second, host);
 332         map_.erase(iter);
 333       }
 334     }
 335   }
 336
 337  private:
 338   SiteToProcessMap map_;
 339 };
 340
 341 // Find the SiteProcessMap specific to the given context.
 342 SiteProcessMap* GetSiteProcessMapForBrowserContext(BrowserContext* context) {
 343   DCHECK(context);
 344   SiteProcessMap* map = static_cast<SiteProcessMap*>(
 345       context->GetUserData(kSiteProcessMapKeyName));
 346   if (!map) {
 347     map = new SiteProcessMap();
 348     context->SetUserData(kSiteProcessMapKeyName, map);
 349   }
 350   return map;
 351 }
 352
 353 // NOTE: changes to this class need to be reviewed by the security team.
 354 class RendererSandboxedProcessLauncherDelegate
 355     : public SandboxedProcessLauncherDelegate {
 356  public:
 357   explicit RendererSandboxedProcessLauncherDelegate(IPC::ChannelProxy* channel)
 358 #if defined(OS_POSIX)
 359       : ipc_fd_(channel->TakeClientFileDescriptor())
 360 #endif  // OS_POSIX
 361   {}
 362
 363   ~RendererSandboxedProcessLauncherDelegate() override {}
 364
 365 #if defined(OS_WIN)
 366   void PreSpawnTarget(sandbox::TargetPolicy* policy, bool* success) override {
 367     AddBaseHandleClosePolicy(policy);
 368
 369     const base::string16& sid =
 370         GetContentClient()->browser()->GetAppContainerSidForSandboxType(
 371             GetSandboxType());
 372     if (!sid.empty())
 373       AddAppContainerPolicy(policy, sid.c_str());
 374
 375     GetContentClient()->browser()->PreSpawnRenderer(policy, success);
 376   }
 377
 378 #elif defined(OS_POSIX)
 379   bool ShouldUseZygote() override {
 380     const base::CommandLine& browser_command_line =
 381         *base::CommandLine::ForCurrentProcess();
 382     base::CommandLine::StringType renderer_prefix =
 383         browser_command_line.GetSwitchValueNative(switches::kRendererCmdPrefix);
 384     return renderer_prefix.empty();
 385   }
 386   base::ScopedFD TakeIpcFd() override { return ipc_fd_.Pass(); }
 387 #endif  // OS_WIN
 388
 389   SandboxType GetSandboxType() override {
 390     return SANDBOX_TYPE_RENDERER;
 391   }
 392
 393  private:
 394 #if defined(OS_POSIX)
 395   base::ScopedFD ipc_fd_;
 396 #endif  // OS_POSIX
 397 };
 398
 399 const char kSessionStorageHolderKey[] = "kSessionStorageHolderKey";
 400
 401 class SessionStorageHolder : public base::SupportsUserData::Data {
 402  public:
 403   SessionStorageHolder() {}
 404   ~SessionStorageHolder() override {}
 405
 406   void Hold(const SessionStorageNamespaceMap& sessions, int view_route_id) {
 407     session_storage_namespaces_awaiting_close_[view_route_id] = sessions;
 408   }
 409
 410   void Release(int old_route_id) {
 411     session_storage_namespaces_awaiting_close_.erase(old_route_id);
 412   }
 413
 414  private:
 415   std::map<int, SessionStorageNamespaceMap >
 416       session_storage_namespaces_awaiting_close_;
 417   DISALLOW_COPY_AND_ASSIGN(SessionStorageHolder);
 418 };
 419
 420 std::string UintVectorToString(const std::vector<unsigned>& vector) {
 421   std::string str;
 422   for (auto it : vector) {
 423     if (!str.empty())
 424       str += ",";
 425     str += base::UintToString(it);
 426   }
 427   return str;
 428 }
 429
 430 }  // namespace
 431
 432 RendererMainThreadFactoryFunction g_renderer_main_thread_factory = NULL;
 433
 434 base::MessageLoop* g_in_process_thread;
 435
 436 base::MessageLoop*
 437     RenderProcessHostImpl::GetInProcessRendererThreadForTesting() {
 438   return g_in_process_thread;
 439 }
 440
 441 // Stores the maximum number of renderer processes the content module can
 442 // create.
 443 static size_t g_max_renderer_count_override = 0;
 444
 445 // static
 446 size_t RenderProcessHost::GetMaxRendererProcessCount() {
 447   if (g_max_renderer_count_override)
 448     return g_max_renderer_count_override;
 449
 450 #if defined(OS_ANDROID)
 451   // On Android we don't maintain a limit of renderer process hosts - we are
 452   // happy with keeping a lot of these, as long as the number of live renderer
 453   // processes remains reasonable, and on Android the OS takes care of that.
 454   return std::numeric_limits<size_t>::max();
 455 #endif
 456
 457   // On other platforms, we calculate the maximum number of renderer process
 458   // hosts according to the amount of installed memory as reported by the OS.
 459   // The calculation assumes that you want the renderers to use half of the
 460   // installed RAM and assuming that each WebContents uses ~40MB.  If you modify
 461   // this assumption, you need to adjust the ThirtyFourTabs test to match the
 462   // expected number of processes.
 463   //
 464   // With the given amounts of installed memory below on a 32-bit CPU, the
 465   // maximum renderer count will roughly be as follows:
 466   //
 467   //   128 MB -> 3
 468   //   512 MB -> 6
 469   //  1024 MB -> 12
 470   //  4096 MB -> 51
 471   // 16384 MB -> 82 (kMaxRendererProcessCount)
 472
 473   static size_t max_count = 0;
 474   if (!max_count) {
 475     const size_t kEstimatedWebContentsMemoryUsage =
 476 #if defined(ARCH_CPU_64_BITS)
 477         60;  // In MB
 478 #else
 479         40;  // In MB
 480 #endif
 481     max_count = base::SysInfo::AmountOfPhysicalMemoryMB() / 2;
 482     max_count /= kEstimatedWebContentsMemoryUsage;
 483
 484     const size_t kMinRendererProcessCount = 3;
 485     max_count = std::max(max_count, kMinRendererProcessCount);
 486     max_count = std::min(max_count, kMaxRendererProcessCount);
 487   }
 488   return max_count;
 489 }
 490
 491 // static
 492 bool g_run_renderer_in_process_ = false;
 493
 494 // static
 495 void RenderProcessHost::SetMaxRendererProcessCount(size_t count) {
 496   g_max_renderer_count_override = count;
 497 }
 498
 499 RenderProcessHostImpl::RenderProcessHostImpl(
 500     BrowserContext* browser_context,
 501     StoragePartitionImpl* storage_partition_impl,
 502     bool is_for_guests_only)
 503     : fast_shutdown_started_(false),
 504       deleting_soon_(false),
 505 #ifndef NDEBUG
 506       is_self_deleted_(false),
 507 #endif
 508       pending_views_(0),
 509       mojo_application_host_(new MojoApplicationHost),
 510       visible_widgets_(0),
 511       backgrounded_(true),
 512       is_initialized_(false),
 513       id_(ChildProcessHostImpl::GenerateChildProcessUniqueId()),
 514       browser_context_(browser_context),
 515       storage_partition_impl_(storage_partition_impl),
 516       sudden_termination_allowed_(true),
 517       ignore_input_events_(false),
 518       is_for_guests_only_(is_for_guests_only),
 519       gpu_observer_registered_(false),
 520       delayed_cleanup_needed_(false),
 521       within_process_died_observer_(false),
 522       power_monitor_broadcaster_(this),
 523       worker_ref_count_(0),
 524       max_worker_count_(0),
 525       permission_service_context_(new PermissionServiceContext(this)),
 526       pending_valuebuffer_state_(new gpu::ValueStateMap()),
 527       subscribe_uniform_enabled_(false),
 528       weak_factory_(this) {
 529   widget_helper_ = new RenderWidgetHelper();
 530
 531   ChildProcessSecurityPolicyImpl::GetInstance()->Add(GetID());
 532
 533   CHECK(!BrowserMainRunner::ExitedMainMessageLoop());
 534   RegisterHost(GetID(), this);
 535   g_all_hosts.Get().set_check_on_null_data(true);
 536   // Initialize |child_process_activity_time_| to a reasonable value.
 537   mark_child_process_activity_time();
 538
 539   if (!GetBrowserContext()->IsOffTheRecord() &&
 540       !base::CommandLine::ForCurrentProcess()->HasSwitch(
 541           switches::kDisableGpuShaderDiskCache)) {
 542     BrowserThread::PostTask(BrowserThread::IO, FROM_HERE,
 543                             base::Bind(&CacheShaderInfo, GetID(),
 544                                        storage_partition_impl_->GetPath()));
 545   }
 546   subscribe_uniform_enabled_ =
 547       base::CommandLine::ForCurrentProcess()->HasSwitch(
 548           switches::kEnableSubscribeUniformExtension);
 549
 550 #if defined(OS_MACOSX)
 551   if (BootstrapSandboxManager::ShouldEnable())
 552     AddObserver(BootstrapSandboxManager::GetInstance());
 553 #endif
 554
 555   // Note: When we create the RenderProcessHostImpl, it's technically
 556   //       backgrounded, because it has no visible listeners.  But the process
 557   //       doesn't actually exist yet, so we'll Background it later, after
 558   //       creation.
 559 }
 560
 561 // static
 562 void RenderProcessHostImpl::ShutDownInProcessRenderer() {
 563   DCHECK(g_run_renderer_in_process_);
 564
 565   switch (g_all_hosts.Pointer()->size()) {
 566     case 0:
 567       return;
 568     case 1: {
 569       RenderProcessHostImpl* host = static_cast<RenderProcessHostImpl*>(
 570           AllHostsIterator().GetCurrentValue());
 571       FOR_EACH_OBSERVER(RenderProcessHostObserver,
 572                         host->observers_,
 573                         RenderProcessHostDestroyed(host));
 574 #ifndef NDEBUG
 575       host->is_self_deleted_ = true;
 576 #endif
 577       delete host;
 578       return;
 579     }
 580     default:
 581       NOTREACHED() << "There should be only one RenderProcessHost when running "
 582                    << "in-process.";
 583   }
 584 }
 585
 586 void RenderProcessHostImpl::RegisterRendererMainThreadFactory(
 587     RendererMainThreadFactoryFunction create) {
 588   g_renderer_main_thread_factory = create;
 589 }
 590
 591 RenderProcessHostImpl::~RenderProcessHostImpl() {
 592 #ifndef NDEBUG
 593   DCHECK(is_self_deleted_)
 594       << "RenderProcessHostImpl is destroyed by something other than itself";
 595 #endif
 596
 597   // Make sure to clean up the in-process renderer before the channel, otherwise
 598   // it may still run and have its IPCs fail, causing asserts.
 599   in_process_renderer_.reset();
 600
 601   ChildProcessSecurityPolicyImpl::GetInstance()->Remove(GetID());
 602
 603   if (gpu_observer_registered_) {
 604     ui::GpuSwitchingManager::GetInstance()->RemoveObserver(this);
 605     gpu_observer_registered_ = false;
 606   }
 607
 608   // We may have some unsent messages at this point, but that's OK.
 609   channel_.reset();
 610   while (!queued_messages_.empty()) {
 611     delete queued_messages_.front();
 612     queued_messages_.pop();
 613   }
 614
 615   UnregisterHost(GetID());
 616
 617   if (!base::CommandLine::ForCurrentProcess()->HasSwitch(
 618       switches::kDisableGpuShaderDiskCache)) {
 619     BrowserThread::PostTask(BrowserThread::IO, FROM_HERE,
 620                             base::Bind(&RemoveShaderInfo, GetID()));
 621   }
 622 }
 623
 624 void RenderProcessHostImpl::EnableSendQueue() {
 625   is_initialized_ = false;
 626 }
 627
 628 bool RenderProcessHostImpl::Init() {
 629   // calling Init() more than once does nothing, this makes it more convenient
 630   // for the view host which may not be sure in some cases
 631   if (channel_)
 632     return true;
 633
 634   base::CommandLine::StringType renderer_prefix;
 635   // A command prefix is something prepended to the command line of the spawned
 636   // process.
 637   const base::CommandLine& browser_command_line =
 638       *base::CommandLine::ForCurrentProcess();
 639   renderer_prefix =
 640       browser_command_line.GetSwitchValueNative(switches::kRendererCmdPrefix);
 641
 642 #if defined(OS_LINUX)
 643   int flags = renderer_prefix.empty() ? ChildProcessHost::CHILD_ALLOW_SELF :
 644                                         ChildProcessHost::CHILD_NORMAL;
 645 #else
 646   int flags = ChildProcessHost::CHILD_NORMAL;
 647 #endif
 648
 649   // Find the renderer before creating the channel so if this fails early we
 650   // return without creating the channel.
 651   base::FilePath renderer_path = ChildProcessHost::GetChildPath(flags);
 652   if (renderer_path.empty())
 653     return false;
 654
 655   // Setup the IPC channel.
 656   const std::string channel_id =
 657       IPC::Channel::GenerateVerifiedChannelID(std::string());
 658   channel_ = CreateChannelProxy(channel_id);
 659
 660   // Setup the Mojo channel.
 661   mojo_application_host_->Init();
 662
 663   // Call the embedder first so that their IPC filters have priority.
 664   GetContentClient()->browser()->RenderProcessWillLaunch(this);
 665
 666   CreateMessageFilters();
 667   RegisterMojoServices();
 668
 669   if (run_renderer_in_process()) {
 670     DCHECK(g_renderer_main_thread_factory);
 671     // Crank up a thread and run the initialization there.  With the way that
 672     // messages flow between the browser and renderer, this thread is required
 673     // to prevent a deadlock in single-process mode.  Since the primordial
 674     // thread in the renderer process runs the WebKit code and can sometimes
 675     // make blocking calls to the UI thread (i.e. this thread), they need to run
 676     // on separate threads.
 677     in_process_renderer_.reset(
 678         g_renderer_main_thread_factory(InProcessChildThreadParams(
 679             channel_id, BrowserThread::UnsafeGetMessageLoopForThread(
 680                             BrowserThread::IO)->task_runner())));
 681
 682     base::Thread::Options options;
 683 #if defined(OS_WIN) && !defined(OS_MACOSX)
 684     // In-process plugins require this to be a UI message loop.
 685     options.message_loop_type = base::MessageLoop::TYPE_UI;
 686 #else
 687     // We can't have multiple UI loops on Linux and Android, so we don't support
 688     // in-process plugins.
 689     options.message_loop_type = base::MessageLoop::TYPE_DEFAULT;
 690 #endif
 691
 692     // As for execution sequence, this callback should have no any dependency
 693     // on starting in-process-render-thread.
 694     // So put it here to trigger ChannelMojo initialization earlier to enable
 695     // in-process-render-thread using ChannelMojo there.
 696     OnProcessLaunched();  // Fake a callback that the process is ready.
 697
 698     in_process_renderer_->StartWithOptions(options);
 699
 700     g_in_process_thread = in_process_renderer_->message_loop();
 701
 702   } else {
 703     // Build command line for renderer.  We call AppendRendererCommandLine()
 704     // first so the process type argument will appear first.
 705     base::CommandLine* cmd_line = new base::CommandLine(renderer_path);
 706     if (!renderer_prefix.empty())
 707       cmd_line->PrependWrapper(renderer_prefix);
 708     AppendRendererCommandLine(cmd_line);
 709     cmd_line->AppendSwitchASCII(switches::kProcessChannelID, channel_id);
 710
 711     // Spawn the child process asynchronously to avoid blocking the UI thread.
 712     // As long as there's no renderer prefix, we can use the zygote process
 713     // at this stage.
 714     child_process_launcher_.reset(new ChildProcessLauncher(
 715         new RendererSandboxedProcessLauncherDelegate(channel_.get()),
 716         cmd_line,
 717         GetID(),
 718         this));
 719
 720     fast_shutdown_started_ = false;
 721   }
 722
 723   if (!gpu_observer_registered_) {
 724     gpu_observer_registered_ = true;
 725     ui::GpuSwitchingManager::GetInstance()->AddObserver(this);
 726   }
 727
 728   power_monitor_broadcaster_.Init();
 729
 730   is_initialized_ = true;
 731   init_time_ = base::TimeTicks::Now();
 732   return true;
 733 }
 734
 735 scoped_ptr<IPC::ChannelProxy> RenderProcessHostImpl::CreateChannelProxy(
 736     const std::string& channel_id) {
 737   scoped_refptr<base::SingleThreadTaskRunner> runner =
 738       BrowserThread::GetMessageLoopProxyForThread(BrowserThread::IO);
 739   scoped_refptr<base::SequencedTaskRunner> mojo_task_runner =
 740       BrowserThread::UnsafeGetMessageLoopForThread(BrowserThread::IO)
 741             ->task_runner();
 742   if (ShouldUseMojoChannel()) {
 743     VLOG(1) << "Mojo Channel is enabled on host";
 744
 745     return IPC::ChannelProxy::Create(
 746         IPC::ChannelMojo::CreateServerFactory(
 747             mojo_task_runner, channel_id),
 748         this, runner.get());
 749   }
 750
 751   return IPC::ChannelProxy::Create(
 752       channel_id, IPC::Channel::MODE_SERVER, this, runner.get());
 753 }
 754
 755 void RenderProcessHostImpl::CreateMessageFilters() {
 756   DCHECK_CURRENTLY_ON(BrowserThread::UI);
 757   const base::CommandLine& browser_command_line =
 758       *base::CommandLine::ForCurrentProcess();
 759   AddFilter(new ResourceSchedulerFilter(GetID()));
 760   MediaInternals* media_internals = MediaInternals::GetInstance();
 761   media::AudioManager* audio_manager =
 762       BrowserMainLoop::GetInstance()->audio_manager();
 763   // Add BrowserPluginMessageFilter to ensure it gets the first stab at messages
 764   // from guests.
 765   scoped_refptr<BrowserPluginMessageFilter> bp_message_filter(
 766       new BrowserPluginMessageFilter(GetID()));
 767   AddFilter(bp_message_filter.get());
 768
 769   scoped_refptr<RenderMessageFilter> render_message_filter(
 770       new RenderMessageFilter(
 771           GetID(),
 772           GetBrowserContext(),
 773           GetBrowserContext()->GetRequestContextForRenderProcess(GetID()),
 774           widget_helper_.get(),
 775           audio_manager,
 776           media_internals,
 777           storage_partition_impl_->GetDOMStorageContext()));
 778   AddFilter(render_message_filter.get());
 779   AddFilter(new RenderFrameMessageFilter(
 780       GetID(),
 781 #if defined(ENABLE_PLUGINS)
 782       PluginServiceImpl::GetInstance(),
 783 #else
 784       nullptr,
 785 #endif
 786       GetBrowserContext(),
 787       GetBrowserContext()->GetRequestContextForRenderProcess(GetID()),
 788       widget_helper_.get()));
 789   BrowserContext* browser_context = GetBrowserContext();
 790   ResourceContext* resource_context = browser_context->GetResourceContext();
 791
 792   scoped_refptr<net::URLRequestContextGetter> request_context(
 793       browser_context->GetRequestContextForRenderProcess(GetID()));
 794   scoped_refptr<net::URLRequestContextGetter> media_request_context(
 795       browser_context->GetMediaRequestContextForRenderProcess(GetID()));
 796
 797   ResourceMessageFilter::GetContextsCallback get_contexts_callback(
 798       base::Bind(&GetContexts, browser_context->GetResourceContext(),
 799                  request_context, media_request_context));
 800
 801   ResourceMessageFilter* resource_message_filter = new ResourceMessageFilter(
 802       GetID(), PROCESS_TYPE_RENDERER,
 803       storage_partition_impl_->GetAppCacheService(),
 804       ChromeBlobStorageContext::GetFor(browser_context),
 805       storage_partition_impl_->GetFileSystemContext(),
 806       storage_partition_impl_->GetServiceWorkerContext(),
 807       storage_partition_impl_->GetHostZoomLevelContext(),
 808       get_contexts_callback);
 809
 810   AddFilter(resource_message_filter);
 811   MediaStreamManager* media_stream_manager =
 812       BrowserMainLoop::GetInstance()->media_stream_manager();
 813   // The AudioInputRendererHost and AudioRendererHost needs to be available for
 814   // lookup, so it's stashed in a member variable.
 815   audio_input_renderer_host_ = new AudioInputRendererHost(
 816       GetID(),
 817       base::GetProcId(GetHandle()),
 818       audio_manager,
 819       media_stream_manager,
 820       AudioMirroringManager::GetInstance(),
 821       BrowserMainLoop::GetInstance()->user_input_monitor());
 822   AddFilter(audio_input_renderer_host_.get());
 823   audio_renderer_host_ = new AudioRendererHost(
 824       GetID(),
 825       audio_manager,
 826       AudioMirroringManager::GetInstance(),
 827       media_internals,
 828       media_stream_manager,
 829       browser_context->GetResourceContext()->GetMediaDeviceIDSalt());
 830   AddFilter(audio_renderer_host_.get());
 831   AddFilter(
 832       new MidiHost(GetID(), BrowserMainLoop::GetInstance()->midi_manager()));
 833   AddFilter(new VideoCaptureHost(media_stream_manager));
 834   AddFilter(new AppCacheDispatcherHost(
 835       storage_partition_impl_->GetAppCacheService(),
 836       GetID()));
 837   AddFilter(new ClipboardMessageFilter);
 838   AddFilter(new DOMStorageMessageFilter(
 839       storage_partition_impl_->GetDOMStorageContext()));
 840   AddFilter(new IndexedDBDispatcherHost(
 841       GetID(),
 842       storage_partition_impl_->GetURLRequestContext(),
 843       storage_partition_impl_->GetIndexedDBContext(),
 844       ChromeBlobStorageContext::GetFor(browser_context)));
 845
 846   gpu_message_filter_ = new GpuMessageFilter(GetID(), widget_helper_.get());
 847   AddFilter(gpu_message_filter_);
 848 #if defined(ENABLE_WEBRTC)
 849   AddFilter(new WebRTCIdentityServiceHost(
 850       GetID(),
 851       storage_partition_impl_->GetWebRTCIdentityStore(),
 852       resource_context));
 853   peer_connection_tracker_host_ = new PeerConnectionTrackerHost(GetID());
 854   AddFilter(peer_connection_tracker_host_.get());
 855   AddFilter(new MediaStreamDispatcherHost(
 856       GetID(),
 857       browser_context->GetResourceContext()->GetMediaDeviceIDSalt(),
 858       media_stream_manager));
 859   AddFilter(new MediaStreamTrackMetricsHost());
 860 #endif
 861 #if defined(ENABLE_PLUGINS)
 862   AddFilter(new PepperRendererConnection(GetID()));
 863 #endif
 864   AddFilter(new SpeechRecognitionDispatcherHost(
 865       GetID(), storage_partition_impl_->GetURLRequestContext()));
 866   AddFilter(new FileAPIMessageFilter(
 867       GetID(),
 868       storage_partition_impl_->GetURLRequestContext(),
 869       storage_partition_impl_->GetFileSystemContext(),
 870       ChromeBlobStorageContext::GetFor(browser_context),
 871       StreamContext::GetFor(browser_context)));
 872   AddFilter(new FileUtilitiesMessageFilter(GetID()));
 873   AddFilter(new MimeRegistryMessageFilter());
 874   AddFilter(new DatabaseMessageFilter(
 875       storage_partition_impl_->GetDatabaseTracker()));
 876 #if defined(OS_MACOSX)
 877   AddFilter(new TextInputClientMessageFilter(GetID()));
 878 #elif defined(OS_WIN)
 879   // The FontCacheDispatcher is required only when we're using GDI rendering.
 880   // TODO(scottmg): pdf/ppapi still require the renderer to be able to precache
 881   // GDI fonts (http://crbug.com/383227), even when using DirectWrite. This
 882   // should eventually be if (!ShouldUseDirectWrite()) guarded.
 883   channel_->AddFilter(new FontCacheDispatcher());
 884 #elif defined(OS_ANDROID)
 885   browser_demuxer_android_ = new BrowserDemuxerAndroid();
 886   AddFilter(browser_demuxer_android_.get());
 887 #endif
 888 #if defined(ENABLE_BROWSER_CDMS)
 889   AddFilter(new BrowserCdmManager(GetID(), NULL));
 890 #endif
 891
 892   WebSocketDispatcherHost::GetRequestContextCallback
 893       websocket_request_context_callback(
 894           base::Bind(&GetRequestContext, request_context,
 895                      media_request_context, RESOURCE_TYPE_SUB_RESOURCE));
 896
 897   AddFilter(
 898       new WebSocketDispatcherHost(GetID(), websocket_request_context_callback));
 899
 900   message_port_message_filter_ = new MessagePortMessageFilter(
 901       base::Bind(&RenderWidgetHelper::GetNextRoutingID,
 902                  base::Unretained(widget_helper_.get())));
 903   AddFilter(message_port_message_filter_.get());
 904
 905   scoped_refptr<CacheStorageDispatcherHost> cache_storage_filter =
 906       new CacheStorageDispatcherHost();
 907   cache_storage_filter->Init(storage_partition_impl_->GetCacheStorageContext());
 908   AddFilter(cache_storage_filter.get());
 909
 910   scoped_refptr<ServiceWorkerDispatcherHost> service_worker_filter =
 911       new ServiceWorkerDispatcherHost(
 912           GetID(), message_port_message_filter_.get(), resource_context);
 913   service_worker_filter->Init(
 914       storage_partition_impl_->GetServiceWorkerContext());
 915   AddFilter(service_worker_filter.get());
 916
 917   AddFilter(new SharedWorkerMessageFilter(
 918       GetID(),
 919       resource_context,
 920       WorkerStoragePartition(
 921           storage_partition_impl_->GetURLRequestContext(),
 922           storage_partition_impl_->GetMediaURLRequestContext(),
 923           storage_partition_impl_->GetAppCacheService(),
 924           storage_partition_impl_->GetQuotaManager(),
 925           storage_partition_impl_->GetFileSystemContext(),
 926           storage_partition_impl_->GetDatabaseTracker(),
 927           storage_partition_impl_->GetIndexedDBContext(),
 928           storage_partition_impl_->GetServiceWorkerContext()),
 929       message_port_message_filter_.get()));
 930
 931 #if defined(ENABLE_WEBRTC)
 932   p2p_socket_dispatcher_host_ = new P2PSocketDispatcherHost(
 933       resource_context,
 934       browser_context->GetRequestContextForRenderProcess(GetID()));
 935   AddFilter(p2p_socket_dispatcher_host_.get());
 936 #endif
 937
 938   AddFilter(new TraceMessageFilter(GetID()));
 939   AddFilter(new ResolveProxyMsgHelper(
 940       browser_context->GetRequestContextForRenderProcess(GetID())));
 941   AddFilter(new QuotaDispatcherHost(
 942       GetID(),
 943       storage_partition_impl_->GetQuotaManager(),
 944       GetContentClient()->browser()->CreateQuotaPermissionContext()));
 945
 946   notification_message_filter_ = new NotificationMessageFilter(
 947       GetID(),
 948       storage_partition_impl_->GetPlatformNotificationContext(),
 949       resource_context,
 950       browser_context);
 951   AddFilter(notification_message_filter_.get());
 952
 953   AddFilter(new GamepadBrowserMessageFilter());
 954   AddFilter(new DeviceLightMessageFilter());
 955   AddFilter(new DeviceMotionMessageFilter());
 956   AddFilter(new DeviceOrientationMessageFilter());
 957   AddFilter(new ProfilerMessageFilter(PROCESS_TYPE_RENDERER));
 958   AddFilter(new HistogramMessageFilter());
 959 #if defined(USE_TCMALLOC) && (defined(OS_LINUX) || defined(OS_ANDROID))
 960   if (browser_command_line.HasSwitch(switches::kEnableMemoryBenchmarking))
 961     AddFilter(new MemoryBenchmarkMessageFilter());
 962 #endif
 963   AddFilter(new PushMessagingMessageFilter(
 964       GetID(), storage_partition_impl_->GetServiceWorkerContext()));
 965 #if defined(OS_ANDROID)
 966   AddFilter(new ScreenOrientationMessageFilterAndroid());
 967 #endif
 968   AddFilter(new GeofencingDispatcherHost(
 969       storage_partition_impl_->GetGeofencingManager()));
 970   if (browser_command_line.HasSwitch(switches::kEnableWebBluetooth)) {
 971     bluetooth_dispatcher_host_ = new BluetoothDispatcherHost(GetID());
 972     AddFilter(bluetooth_dispatcher_host_.get());
 973   }
 974 }
 975
 976 void RenderProcessHostImpl::RegisterMojoServices() {
 977 #if !defined(OS_ANDROID)
 978   mojo_application_host_->service_registry()->AddService(
 979       base::Bind(&device::BatteryMonitorImpl::Create));
 980
 981   mojo_application_host_->service_registry()->AddService(
 982       base::Bind(&device::VibrationManagerImpl::Create));
 983 #endif
 984
 985   mojo_application_host_->service_registry()->AddService(
 986       base::Bind(&PermissionServiceContext::CreateService,
 987                  base::Unretained(permission_service_context_.get())));
 988
 989   mojo_application_host_->service_registry()->AddService(base::Bind(
 990       &BackgroundSyncContextImpl::CreateService,
 991       base::Unretained(storage_partition_impl_->GetBackgroundSyncContext())));
 992
 993   mojo_application_host_->service_registry()->AddService(base::Bind(
 994       &content::ServicePortServiceImpl::Create,
 995       make_scoped_refptr(storage_partition_impl_->GetNavigatorConnectContext()),
 996       message_port_message_filter_));
 997
 998 #if defined(OS_ANDROID)
 999   ServiceRegistrarAndroid::RegisterProcessHostServices(
1000       mojo_application_host_->service_registry_android());
1001 #endif
1002
1003   GetContentClient()->browser()->RegisterRenderProcessMojoServices(
1004       mojo_application_host_->service_registry());
1005 }
1006
1007 int RenderProcessHostImpl::GetNextRoutingID() {
1008   return widget_helper_->GetNextRoutingID();
1009 }
1010
1011 void RenderProcessHostImpl::ResumeDeferredNavigation(
1012     const GlobalRequestID& request_id) {
1013   widget_helper_->ResumeDeferredNavigation(request_id);
1014 }
1015
1016 void RenderProcessHostImpl::NotifyTimezoneChange(const std::string& zone_id) {
1017   Send(new ViewMsg_TimezoneChange(zone_id));
1018 }
1019
1020 ServiceRegistry* RenderProcessHostImpl::GetServiceRegistry() {
1021   DCHECK(mojo_application_host_);
1022   return mojo_application_host_->service_registry();
1023 }
1024
1025 const base::TimeTicks& RenderProcessHostImpl::GetInitTimeForNavigationMetrics()
1026     const {
1027   return init_time_;
1028 }
1029
1030 bool RenderProcessHostImpl::SubscribeUniformEnabled() const {
1031   return subscribe_uniform_enabled_;
1032 }
1033
1034 void RenderProcessHostImpl::OnAddSubscription(unsigned int target) {
1035   DCHECK(subscribe_uniform_enabled_);
1036   subscription_set_.insert(target);
1037   const gpu::ValueState* state = pending_valuebuffer_state_->GetState(target);
1038   if (state) {
1039     SendUpdateValueState(target, *state);
1040   }
1041 }
1042
1043 void RenderProcessHostImpl::OnRemoveSubscription(unsigned int target) {
1044   DCHECK(subscribe_uniform_enabled_);
1045   subscription_set_.erase(target);
1046 }
1047
1048 void RenderProcessHostImpl::SendUpdateValueState(unsigned int target,
1049                                                  const gpu::ValueState& state) {
1050   DCHECK(subscribe_uniform_enabled_);
1051   if (subscription_set_.find(target) != subscription_set_.end()) {
1052     GpuProcessHost::SendOnIO(
1053         GpuProcessHost::GPU_PROCESS_KIND_SANDBOXED,
1054         CAUSE_FOR_GPU_LAUNCH_NO_LAUNCH,
1055         new GpuMsg_UpdateValueState(id_, target, state));
1056   } else {
1057     // Store the ValueState locally in case a Valuebuffer subscribes to it later
1058     pending_valuebuffer_state_->UpdateState(target, state);
1059   }
1060 }
1061
1062 #if defined(ENABLE_BROWSER_CDMS)
1063 media::BrowserCdm* RenderProcessHostImpl::GetBrowserCdm(int render_frame_id,
1064                                                         int cdm_id) const {
1065   DCHECK_CURRENTLY_ON(BrowserThread::UI);
1066   BrowserCdmManager* manager = BrowserCdmManager::FromProcess(GetID());
1067   if (!manager)
1068     return nullptr;
1069   return manager->GetCdm(render_frame_id, cdm_id);
1070 }
1071 #endif
1072
1073 void RenderProcessHostImpl::AddRoute(
1074     int32 routing_id,
1075     IPC::Listener* listener) {
1076   CHECK(!listeners_.Lookup(routing_id))
1077       << "Found Routing ID Conflict: " << routing_id;
1078   listeners_.AddWithID(listener, routing_id);
1079 }
1080
1081 void RenderProcessHostImpl::RemoveRoute(int32 routing_id) {
1082   DCHECK(listeners_.Lookup(routing_id) != NULL);
1083   listeners_.Remove(routing_id);
1084
1085   // Keep the one renderer thread around forever in single process mode.
1086   if (!run_renderer_in_process())
1087     Cleanup();
1088 }
1089
1090 void RenderProcessHostImpl::AddObserver(RenderProcessHostObserver* observer) {
1091   observers_.AddObserver(observer);
1092 }
1093
1094 void RenderProcessHostImpl::RemoveObserver(
1095     RenderProcessHostObserver* observer) {
1096   observers_.RemoveObserver(observer);
1097 }
1098
1099 void RenderProcessHostImpl::ShutdownForBadMessage() {
1100   base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
1101   if (command_line->HasSwitch(switches::kDisableKillAfterBadIPC))
1102     return;
1103
1104   if (run_renderer_in_process()) {
1105     // In single process mode it is better if we don't suicide but just
1106     // crash.
1107     CHECK(false);
1108   }
1109   // We kill the renderer but don't include a NOTREACHED, because we want the
1110   // browser to try to survive when it gets illegal messages from the renderer.
1111   Shutdown(RESULT_CODE_KILLED_BAD_MESSAGE, false);
1112 }
1113
1114 void RenderProcessHostImpl::WidgetRestored() {
1115   // Verify we were properly backgrounded.
1116   DCHECK_EQ(backgrounded_, (visible_widgets_ == 0));
1117   visible_widgets_++;
1118   SetBackgrounded(false);
1119 }
1120
1121 void RenderProcessHostImpl::WidgetHidden() {
1122   // On startup, the browser will call Hide
1123   if (backgrounded_)
1124     return;
1125
1126   DCHECK_EQ(backgrounded_, (visible_widgets_ == 0));
1127   visible_widgets_--;
1128   DCHECK_GE(visible_widgets_, 0);
1129   if (visible_widgets_ == 0) {
1130     DCHECK(!backgrounded_);
1131     SetBackgrounded(true);
1132   }
1133 }
1134
1135 int RenderProcessHostImpl::VisibleWidgetCount() const {
1136   return visible_widgets_;
1137 }
1138
1139 bool RenderProcessHostImpl::IsForGuestsOnly() const {
1140   return is_for_guests_only_;
1141 }
1142
1143 StoragePartition* RenderProcessHostImpl::GetStoragePartition() const {
1144   return storage_partition_impl_;
1145 }
1146
1147 static void AppendCompositorCommandLineFlags(base::CommandLine* command_line) {
1148   if (IsPropertyTreeVerificationEnabled())
1149     command_line->AppendSwitch(cc::switches::kEnablePropertyTreeVerification);
1150
1151   if (IsDelegatedRendererEnabled())
1152     command_line->AppendSwitch(switches::kEnableDelegatedRenderer);
1153
1154   command_line->AppendSwitchASCII(
1155       switches::kNumRasterThreads,
1156       base::IntToString(NumberOfRendererRasterThreads()));
1157
1158   if (IsGpuRasterizationEnabled())
1159     command_line->AppendSwitch(switches::kEnableGpuRasterization);
1160
1161   int msaa_sample_count = GpuRasterizationMSAASampleCount();
1162   if (msaa_sample_count >= 0) {
1163     command_line->AppendSwitchASCII(
1164         switches::kGpuRasterizationMSAASampleCount,
1165         base::IntToString(msaa_sample_count));
1166   }
1167
1168   if (IsZeroCopyUploadEnabled())
1169     command_line->AppendSwitch(switches::kEnableZeroCopy);
1170   if (IsPersistentGpuMemoryBufferEnabled())
1171     command_line->AppendSwitch(switches::kEnablePersistentGpuMemoryBuffer);
1172
1173   if (IsForceGpuRasterizationEnabled())
1174     command_line->AppendSwitch(switches::kForceGpuRasterization);
1175
1176   gfx::BufferUsage buffer_usage = IsPersistentGpuMemoryBufferEnabled()
1177                                       ? gfx::BufferUsage::PERSISTENT_MAP
1178                                       : gfx::BufferUsage::MAP;
1179   std::vector<unsigned> image_targets(
1180       static_cast<size_t>(gfx::BufferFormat::LAST) + 1, GL_TEXTURE_2D);
1181   for (size_t format = 0;
1182        format < static_cast<size_t>(gfx::BufferFormat::LAST) + 1; format++) {
1183     image_targets[format] =
1184         BrowserGpuMemoryBufferManager::GetImageTextureTarget(
1185             static_cast<gfx::BufferFormat>(format), buffer_usage);
1186   }
1187   command_line->AppendSwitchASCII(switches::kContentImageTextureTarget,
1188                                   UintVectorToString(image_targets));
1189
1190   command_line->AppendSwitchASCII(
1191       switches::kVideoImageTextureTarget,
1192       base::UintToString(BrowserGpuMemoryBufferManager::GetImageTextureTarget(
1193           gfx::BufferFormat::R_8, gfx::BufferUsage::MAP)));
1194
1195   // Appending disable-gpu-feature switches due to software rendering list.
1196   GpuDataManagerImpl* gpu_data_manager = GpuDataManagerImpl::GetInstance();
1197   DCHECK(gpu_data_manager);
1198   gpu_data_manager->AppendRendererCommandLine(command_line);
1199 }
1200
1201 void RenderProcessHostImpl::AppendRendererCommandLine(
1202     base::CommandLine* command_line) const {
1203   // Pass the process type first, so it shows first in process listings.
1204   command_line->AppendSwitchASCII(switches::kProcessType,
1205                                   switches::kRendererProcess);
1206
1207   // Now send any options from our own command line we want to propagate.
1208   const base::CommandLine& browser_command_line =
1209       *base::CommandLine::ForCurrentProcess();
1210   PropagateBrowserCommandLineToRenderer(browser_command_line, command_line);
1211
1212   // Pass on the browser locale.
1213   const std::string locale =
1214       GetContentClient()->browser()->GetApplicationLocale();
1215   command_line->AppendSwitchASCII(switches::kLang, locale);
1216
1217   // If we run base::FieldTrials, we want to pass to their state to the
1218   // renderer so that it can act in accordance with each state, or record
1219   // histograms relating to the base::FieldTrial states.
1220   std::string field_trial_states;
1221   base::FieldTrialList::AllStatesToString(&field_trial_states);
1222   if (!field_trial_states.empty()) {
1223     command_line->AppendSwitchASCII(switches::kForceFieldTrials,
1224                                     field_trial_states);
1225   }
1226
1227   GetContentClient()->browser()->AppendExtraCommandLineSwitches(
1228       command_line, GetID());
1229
1230   if (IsPinchToZoomEnabled())
1231     command_line->AppendSwitch(switches::kEnablePinch);
1232
1233 #if defined(OS_WIN)
1234   command_line->AppendSwitchASCII(switches::kDeviceScaleFactor,
1235                                   base::DoubleToString(gfx::GetDPIScale()));
1236 #endif
1237
1238   AppendCompositorCommandLineFlags(command_line);
1239 }
1240
1241 void RenderProcessHostImpl::PropagateBrowserCommandLineToRenderer(
1242     const base::CommandLine& browser_cmd,
1243     base::CommandLine* renderer_cmd) const {
1244   // Propagate the following switches to the renderer command line (along
1245   // with any associated values) if present in the browser command line.
1246   static const char* const kSwitchNames[] = {
1247     switches::kAllowLoopbackInPeerConnection,
1248     switches::kAudioBufferSize,
1249     switches::kBlinkPlatformLogChannels,
1250     switches::kBlinkSettings,
1251     switches::kDefaultTileWidth,
1252     switches::kDefaultTileHeight,
1253     switches::kDisable3DAPIs,
1254     switches::kDisableAcceleratedJpegDecoding,
1255     switches::kDisableAcceleratedVideoDecode,
1256     switches::kDisableBlinkFeatures,
1257     switches::kDisableBreakpad,
1258     switches::kDisablePreferCompositingToLCDText,
1259     switches::kDisableDatabases,
1260     switches::kDisableDelayAgnosticAec,
1261     switches::kDisableDirectNPAPIRequests,
1262     switches::kDisableDisplayList2dCanvas,
1263     switches::kDisableDistanceFieldText,
1264     switches::kDisableEncryptedMedia,
1265     switches::kDisableFileSystem,
1266     switches::kDisableGpuCompositing,
1267     switches::kDisableGpuMemoryBufferVideoFrames,
1268     switches::kDisableGpuVsync,
1269     switches::kDisableLowResTiling,
1270     switches::kDisableHistogramCustomizer,
1271     switches::kDisableIconNtp,
1272     switches::kDisableLCDText,
1273     switches::kDisableLocalStorage,
1274     switches::kDisableLogging,
1275     switches::kDisableMediaSource,
1276     switches::kDisableMojoChannel,
1277     switches::kDisableNotifications,
1278     switches::kDisableOverlayScrollbar,
1279     switches::kDisablePermissionsAPI,
1280     switches::kDisablePresentationAPI,
1281     switches::kDisablePinch,
1282     switches::kDisableRGBA4444Textures,
1283     switches::kDisableSeccompFilterSandbox,
1284     switches::kDisableSharedWorkers,
1285     switches::kDisableSpeechAPI,
1286     switches::kDisableSVG1DOM,
1287     switches::kDisableThreadedCompositing,
1288     switches::kDisableThreadedScrolling,
1289     switches::kDisableTouchAdjustment,
1290     switches::kDisableTouchDragDrop,
1291     switches::kDisableTouchEditing,
1292     switches::kDisableV8IdleTasks,
1293     switches::kDomAutomationController,
1294     switches::kEnableBleedingEdgeRenderingFastPaths,
1295     switches::kEnableBlinkFeatures,
1296     switches::kEnableBrowserSideNavigation,
1297     switches::kEnableCompositorAnimationTimelines,
1298     switches::kEnableCredentialManagerAPI,
1299     switches::kEnableDelayAgnosticAec,
1300     switches::kEnableDisplayList2dCanvas,
1301     switches::kEnableDistanceFieldText,
1302     switches::kEnableExperimentalCanvasFeatures,
1303     switches::kEnableExperimentalWebPlatformFeatures,
1304     switches::kEnableGPUClientLogging,
1305     switches::kEnableGpuClientTracing,
1306     switches::kEnableGpuMemoryBufferVideoFrames,
1307     switches::kEnableGPUServiceLogging,
1308     switches::kEnableIconNtp,
1309     switches::kEnableLinkDisambiguationPopup,
1310     switches::kEnableLowResTiling,
1311     switches::kEnableInbandTextTracks,
1312     switches::kEnableLCDText,
1313     switches::kEnableLogging,
1314     switches::kEnableMemoryBenchmarking,
1315     switches::kEnableNetworkInformation,
1316     switches::kEnableOverlayScrollbar,
1317     switches::kEnablePinch,
1318     switches::kEnablePluginPlaceholderTesting,
1319     switches::kEnablePreciseMemoryInfo,
1320     switches::kEnablePreferCompositingToLCDText,
1321     switches::kEnablePrefixedEncryptedMedia,
1322     switches::kEnablePushMessagePayload,
1323     switches::kEnableRGBA4444Textures,
1324     switches::kEnableRendererMojoChannel,
1325     switches::kEnableRTCSmoothnessAlgorithm,
1326     switches::kEnableSeccompFilterSandbox,
1327     switches::kEnableSkiaBenchmarking,
1328     switches::kEnableSlimmingPaintV2,
1329     switches::kEnableSmoothScrolling,
1330     switches::kEnableStatsTable,
1331     switches::kEnableThreadedCompositing,
1332     switches::kEnableTouchDragDrop,
1333     switches::kEnableTouchEditing,
1334     switches::kEnableUnsafeES3APIs,
1335     switches::kEnableViewport,
1336     switches::kEnableVtune,
1337     switches::kEnableWebBluetooth,
1338     switches::kEnableWebGLDraftExtensions,
1339     switches::kEnableWebGLImageChromium,
1340     switches::kEnableWebVR,
1341     switches::kExplicitlyAllowedPorts,
1342     switches::kForceDeviceScaleFactor,
1343     switches::kForceDisplayList2dCanvas,
1344     switches::kForceOverlayFullscreenVideo,
1345     switches::kFullMemoryCrashReport,
1346     switches::kIPCConnectionTimeout,
1347     switches::kJavaScriptFlags,
1348     switches::kLoggingLevel,
1349     switches::kMainFrameResizesAreOrientationChanges,
1350     switches::kMaxUntiledLayerWidth,
1351     switches::kMaxUntiledLayerHeight,
1352     switches::kMemoryMetrics,
1353     switches::kNoReferrers,
1354     switches::kNoSandbox,
1355     switches::kOverridePluginPowerSaverForTesting,
1356     switches::kPpapiInProcess,
1357     switches::kProfilerTiming,
1358     switches::kReducedReferrerGranularity,
1359     switches::kReduceSecurityForTesting,
1360     switches::kRegisterPepperPlugins,
1361     switches::kRendererStartupDialog,
1362     switches::kRootLayerScrolls,
1363     switches::kShowPaintRects,
1364     switches::kSitePerProcess,
1365     switches::kStatsCollectionController,
1366     switches::kTestType,
1367     switches::kTouchEvents,
1368     switches::kTouchTextSelectionStrategy,
1369     switches::kTraceConfigFile,
1370     switches::kTraceToConsole,
1371     // This flag needs to be propagated to the renderer process for
1372     // --in-process-webgl.
1373     switches::kUseGL,
1374     switches::kUseMobileUserAgent,
1375     switches::kUseNormalPriorityForTileTaskWorkerThreads,
1376     switches::kV,
1377     switches::kVideoThreads,
1378     switches::kVideoUnderflowThresholdMs,
1379     switches::kVModule,
1380     // Please keep these in alphabetical order. Compositor switches here should
1381     // also be added to chrome/browser/chromeos/login/chrome_restart_request.cc.
1382     cc::switches::kCompositeToMailbox,
1383     cc::switches::kDisableCompositedAntialiasing,
1384     cc::switches::kDisableMainFrameBeforeActivation,
1385     cc::switches::kDisableThreadedAnimation,
1386     cc::switches::kEnableBeginFrameScheduling,
1387     cc::switches::kEnableGpuBenchmarking,
1388     cc::switches::kEnableMainFrameBeforeActivation,
1389     cc::switches::kShowCompositedLayerBorders,
1390     cc::switches::kShowFPSCounter,
1391     cc::switches::kShowLayerAnimationBounds,
1392     cc::switches::kShowPropertyChangedRects,
1393     cc::switches::kShowReplicaScreenSpaceRects,
1394     cc::switches::kShowScreenSpaceRects,
1395     cc::switches::kShowSurfaceDamageRects,
1396     cc::switches::kSlowDownRasterScaleFactor,
1397     cc::switches::kStrictLayerPropertyChangeChecking,
1398     cc::switches::kTopControlsHideThreshold,
1399     cc::switches::kTopControlsShowThreshold,
1400
1401 #if defined(ENABLE_PLUGINS)
1402     switches::kEnablePepperTesting,
1403 #endif
1404 #if defined(ENABLE_WEBRTC)
1405     switches::kDisableWebRtcHWDecoding,
1406     switches::kDisableWebRtcHWEncoding,
1407     switches::kEnableWebRtcDtls12,
1408     switches::kEnableWebRtcHWH264Encoding,
1409     switches::kEnableWebRtcStunOrigin,
1410     switches::kWebRtcMaxCaptureFramerate,
1411 #endif
1412     switches::kEnableLowEndDeviceMode,
1413     switches::kDisableLowEndDeviceMode,
1414 #if defined(OS_ANDROID)
1415     switches::kDisableGestureRequirementForMediaPlayback,
1416     switches::kDisableWebAudio,
1417     switches::kRendererWaitForJavaDebugger,
1418 #endif
1419 #if defined(OS_MACOSX)
1420     // Allow this to be set when invoking the browser and relayed along.
1421     switches::kEnableSandboxLogging,
1422 #endif
1423 #if defined(OS_WIN)
1424     switches::kDisableDirectWrite,
1425     switches::kDisableWin32kRendererLockDown,
1426     switches::kTraceExportEventsToETW,
1427 #endif
1428 #if defined(USE_OZONE)
1429     switches::kOzonePlatform,
1430 #endif
1431 #if defined(OS_CHROMEOS)
1432     switches::kDisableVaapiAcceleratedVideoEncode,
1433 #endif
1434   };
1435   renderer_cmd->CopySwitchesFrom(browser_cmd, kSwitchNames,
1436                                  arraysize(kSwitchNames));
1437
1438   if (browser_cmd.HasSwitch(switches::kTraceStartup) &&
1439       BrowserMainLoop::GetInstance()->is_tracing_startup_for_duration()) {
1440     // Pass kTraceStartup switch to renderer only if startup tracing has not
1441     // finished.
1442     renderer_cmd->AppendSwitchASCII(
1443         switches::kTraceStartup,
1444         browser_cmd.GetSwitchValueASCII(switches::kTraceStartup));
1445   }
1446
1447 #if defined(ENABLE_WEBRTC)
1448   // Only run the Stun trials in the first renderer.
1449   if (!has_done_stun_trials &&
1450       browser_cmd.HasSwitch(switches::kWebRtcStunProbeTrialParameter)) {
1451     has_done_stun_trials = true;
1452     renderer_cmd->AppendSwitchASCII(
1453         switches::kWebRtcStunProbeTrialParameter,
1454         browser_cmd.GetSwitchValueASCII(
1455             switches::kWebRtcStunProbeTrialParameter));
1456   }
1457 #endif
1458
1459   // Disable databases in incognito mode.
1460   if (GetBrowserContext()->IsOffTheRecord() &&
1461       !browser_cmd.HasSwitch(switches::kDisableDatabases)) {
1462     renderer_cmd->AppendSwitch(switches::kDisableDatabases);
1463   }
1464
1465   // Add kWaitForDebugger to let renderer process wait for a debugger.
1466   if (browser_cmd.HasSwitch(switches::kWaitForDebuggerChildren)) {
1467     // Look to pass-on the kWaitForDebugger flag.
1468     std::string value =
1469         browser_cmd.GetSwitchValueASCII(switches::kWaitForDebuggerChildren);
1470     if (value.empty() || value == switches::kRendererProcess) {
1471       renderer_cmd->AppendSwitch(switches::kWaitForDebugger);
1472     }
1473   }
1474 }
1475
1476 base::ProcessHandle RenderProcessHostImpl::GetHandle() const {
1477   if (run_renderer_in_process())
1478     return base::GetCurrentProcessHandle();
1479
1480   if (!child_process_launcher_.get() || child_process_launcher_->IsStarting())
1481     return base::kNullProcessHandle;
1482
1483   return child_process_launcher_->GetProcess().Handle();
1484 }
1485
1486 bool RenderProcessHostImpl::Shutdown(int exit_code, bool wait) {
1487   if (run_renderer_in_process())
1488     return false;  // Single process mode never shuts down the renderer.
1489
1490 #if defined(OS_ANDROID)
1491   // Android requires a different approach for killing.
1492   StopChildProcess(GetHandle());
1493   return true;
1494 #else
1495   if (!child_process_launcher_.get() || child_process_launcher_->IsStarting())
1496     return false;
1497
1498   return child_process_launcher_->GetProcess().Terminate(exit_code, wait);
1499 #endif
1500 }
1501
1502 bool RenderProcessHostImpl::FastShutdownIfPossible() {
1503   if (run_renderer_in_process())
1504     return false;  // Single process mode never shuts down the renderer.
1505
1506   if (!GetContentClient()->browser()->IsFastShutdownPossible())
1507     return false;
1508
1509   if (!child_process_launcher_.get() ||
1510       child_process_launcher_->IsStarting() ||
1511       !GetHandle())
1512     return false;  // Render process hasn't started or is probably crashed.
1513
1514   // Test if there's an unload listener.
1515   // NOTE: It's possible that an onunload listener may be installed
1516   // while we're shutting down, so there's a small race here.  Given that
1517   // the window is small, it's unlikely that the web page has much
1518   // state that will be lost by not calling its unload handlers properly.
1519   if (!SuddenTerminationAllowed())
1520     return false;
1521
1522   if (worker_ref_count_ != 0) {
1523     if (survive_for_worker_start_time_.is_null())
1524       survive_for_worker_start_time_ = base::TimeTicks::Now();
1525     return false;
1526   }
1527
1528   // Set this before ProcessDied() so observers can tell if the render process
1529   // died due to fast shutdown versus another cause.
1530   fast_shutdown_started_ = true;
1531
1532   ProcessDied(false /* already_dead */, nullptr);
1533   return true;
1534 }
1535
1536 bool RenderProcessHostImpl::Send(IPC::Message* msg) {
1537   TRACE_EVENT0("renderer_host", "RenderProcessHostImpl::Send");
1538   if (!channel_) {
1539     if (!is_initialized_) {
1540       queued_messages_.push(msg);
1541       return true;
1542     } else {
1543       delete msg;
1544       return false;
1545     }
1546   }
1547
1548   if (child_process_launcher_.get() && child_process_launcher_->IsStarting()) {
1549     queued_messages_.push(msg);
1550     return true;
1551   }
1552
1553   return channel_->Send(msg);
1554 }
1555
1556 bool RenderProcessHostImpl::OnMessageReceived(const IPC::Message& msg) {
1557   // If we're about to be deleted, or have initiated the fast shutdown sequence,
1558   // we ignore incoming messages.
1559
1560   if (deleting_soon_ || fast_shutdown_started_)
1561     return false;
1562
1563   mark_child_process_activity_time();
1564   if (msg.routing_id() == MSG_ROUTING_CONTROL) {
1565     // Dispatch control messages.
1566     IPC_BEGIN_MESSAGE_MAP(RenderProcessHostImpl, msg)
1567       IPC_MESSAGE_HANDLER(ChildProcessHostMsg_ShutdownRequest,
1568                           OnShutdownRequest)
1569       IPC_MESSAGE_HANDLER(RenderProcessHostMsg_SuddenTerminationChanged,
1570                           SuddenTerminationChanged)
1571       IPC_MESSAGE_HANDLER(ViewHostMsg_UserMetricsRecordAction,
1572                           OnUserMetricsRecordAction)
1573       IPC_MESSAGE_HANDLER(ViewHostMsg_SavedPageAsMHTML, OnSavedPageAsMHTML)
1574       IPC_MESSAGE_HANDLER(ViewHostMsg_Close_ACK, OnCloseACK)
1575 #if defined(ENABLE_WEBRTC)
1576       IPC_MESSAGE_HANDLER(AecDumpMsg_RegisterAecDumpConsumer,
1577                           OnRegisterAecDumpConsumer)
1578       IPC_MESSAGE_HANDLER(AecDumpMsg_UnregisterAecDumpConsumer,
1579                           OnUnregisterAecDumpConsumer)
1580 #endif
1581       // Adding single handlers for your service here is fine, but once your
1582       // service needs more than one handler, please extract them into a new
1583       // message filter and add that filter to CreateMessageFilters().
1584     IPC_END_MESSAGE_MAP()
1585
1586     return true;
1587   }
1588
1589   // Dispatch incoming messages to the appropriate IPC::Listener.
1590   IPC::Listener* listener = listeners_.Lookup(msg.routing_id());
1591   if (!listener) {
1592     if (msg.is_sync()) {
1593       // The listener has gone away, so we must respond or else the caller will
1594       // hang waiting for a reply.
1595       IPC::Message* reply = IPC::SyncMessage::GenerateReply(&msg);
1596       reply->set_reply_error();
1597       Send(reply);
1598     }
1599     return true;
1600   }
1601   return listener->OnMessageReceived(msg);
1602 }
1603
1604 void RenderProcessHostImpl::OnChannelConnected(int32 peer_pid) {
1605 #if defined(IPC_MESSAGE_LOG_ENABLED)
1606   Send(new ChildProcessMsg_SetIPCLoggingEnabled(
1607       IPC::Logging::GetInstance()->Enabled()));
1608 #endif
1609
1610   tracked_objects::ThreadData::Status status =
1611       tracked_objects::ThreadData::status();
1612   Send(new ChildProcessMsg_SetProfilerStatus(status));
1613
1614 #if defined(OS_MACOSX) && !defined(OS_IOS)
1615   io_surface_manager_token_ =
1616       BrowserIOSurfaceManager::GetInstance()->GenerateChildProcessToken(
1617           GetID());
1618   Send(new ChildProcessMsg_SetIOSurfaceManagerToken(io_surface_manager_token_));
1619 #endif
1620
1621 #if defined(USE_OZONE)
1622   Send(new ChildProcessMsg_InitializeClientNativePixmapFactory(
1623       base::FileDescriptor(
1624           ui::OzonePlatform::GetInstance()->OpenClientNativePixmapDevice())));
1625 #endif
1626
1627   // Inform AudioInputRendererHost about the new render process PID.
1628   // AudioInputRendererHost is reference counted, so it's lifetime is
1629   // guarantueed during the lifetime of the closure.
1630   BrowserThread::PostTask(
1631       BrowserThread::IO, FROM_HERE,
1632       base::Bind(&AudioInputRendererHost::set_renderer_pid,
1633                  audio_input_renderer_host_,
1634                  peer_pid));
1635 }
1636
1637 void RenderProcessHostImpl::OnChannelError() {
1638   ProcessDied(true /* already_dead */, nullptr);
1639 }
1640
1641 void RenderProcessHostImpl::OnBadMessageReceived(const IPC::Message& message) {
1642   // Message de-serialization failed. We consider this a capital crime. Kill the
1643   // renderer if we have one.
1644   auto type = message.type();
1645   LOG(ERROR) << "bad message " << type << " terminating renderer.";
1646   BrowserChildProcessHostImpl::HistogramBadMessageTerminated(
1647       PROCESS_TYPE_RENDERER);
1648
1649   // Create a memory dump. This will contain enough stack frames to work out
1650   // what the bad message was.
1651   base::debug::Alias(&type);
1652   base::debug::DumpWithoutCrashing();
1653
1654   bad_message::ReceivedBadMessage(this,
1655                                   bad_message::RPH_DESERIALIZATION_FAILED);
1656 }
1657
1658 BrowserContext* RenderProcessHostImpl::GetBrowserContext() const {
1659   return browser_context_;
1660 }
1661
1662 bool RenderProcessHostImpl::InSameStoragePartition(
1663     StoragePartition* partition) const {
1664   return storage_partition_impl_ == partition;
1665 }
1666
1667 int RenderProcessHostImpl::GetID() const {
1668   return id_;
1669 }
1670
1671 bool RenderProcessHostImpl::HasConnection() const {
1672   return channel_.get() != NULL;
1673 }
1674
1675 void RenderProcessHostImpl::SetIgnoreInputEvents(bool ignore_input_events) {
1676   ignore_input_events_ = ignore_input_events;
1677 }
1678
1679 bool RenderProcessHostImpl::IgnoreInputEvents() const {
1680   return ignore_input_events_;
1681 }
1682
1683 void RenderProcessHostImpl::Cleanup() {
1684   // If within_process_died_observer_ is true, one of our observers performed an
1685   // action that caused us to die (e.g. http://crbug.com/339504). Therefore,
1686   // delay the destruction until all of the observer callbacks have been made,
1687   // and guarantee that the RenderProcessHostDestroyed observer callback is
1688   // always the last callback fired.
1689   if (within_process_died_observer_) {
1690     delayed_cleanup_needed_ = true;
1691     return;
1692   }
1693   delayed_cleanup_needed_ = false;
1694
1695   // Records the time when the process starts surviving for workers for UMA.
1696   if (listeners_.IsEmpty() && worker_ref_count_ > 0 &&
1697       survive_for_worker_start_time_.is_null()) {
1698     survive_for_worker_start_time_ = base::TimeTicks::Now();
1699   }
1700
1701   // When there are no other owners of this object, we can delete ourselves.
1702   if (listeners_.IsEmpty() && worker_ref_count_ == 0) {
1703     if (!survive_for_worker_start_time_.is_null()) {
1704       UMA_HISTOGRAM_LONG_TIMES(
1705           "SharedWorker.RendererSurviveForWorkerTime",
1706           base::TimeTicks::Now() - survive_for_worker_start_time_);
1707     }
1708
1709     if (max_worker_count_ > 0) {
1710       // Record the max number of workers (SharedWorker or ServiceWorker)
1711       // that are simultaneously hosted in this renderer process.
1712       UMA_HISTOGRAM_COUNTS("Render.Workers.MaxWorkerCountInRendererProcess",
1713                            max_worker_count_);
1714     }
1715
1716     // We cannot clean up twice; if this fails, there is an issue with our
1717     // control flow.
1718     DCHECK(!deleting_soon_);
1719
1720     DCHECK_EQ(0, pending_views_);
1721     FOR_EACH_OBSERVER(RenderProcessHostObserver,
1722                       observers_,
1723                       RenderProcessHostDestroyed(this));
1724     NotificationService::current()->Notify(
1725         NOTIFICATION_RENDERER_PROCESS_TERMINATED,
1726         Source<RenderProcessHost>(this),
1727         NotificationService::NoDetails());
1728
1729 #ifndef NDEBUG
1730     is_self_deleted_ = true;
1731 #endif
1732     base::MessageLoop::current()->DeleteSoon(FROM_HERE, this);
1733     deleting_soon_ = true;
1734     // It's important not to wait for the DeleteTask to delete the channel
1735     // proxy. Kill it off now. That way, in case the profile is going away, the
1736     // rest of the objects attached to this RenderProcessHost start going
1737     // away first, since deleting the channel proxy will post a
1738     // OnChannelClosed() to IPC::ChannelProxy::Context on the IO thread.
1739     channel_.reset();
1740
1741     // The following members should be cleared in ProcessDied() as well!
1742     gpu_message_filter_ = NULL;
1743     message_port_message_filter_ = NULL;
1744
1745     RemoveUserData(kSessionStorageHolderKey);
1746
1747     // Remove ourself from the list of renderer processes so that we can't be
1748     // reused in between now and when the Delete task runs.
1749     UnregisterHost(GetID());
1750
1751 #if defined(OS_MACOSX) && !defined(OS_IOS)
1752     if (!io_surface_manager_token_.IsZero()) {
1753       BrowserIOSurfaceManager::GetInstance()->InvalidateChildProcessToken(
1754           io_surface_manager_token_);
1755       io_surface_manager_token_.SetZero();
1756     }
1757 #endif
1758   }
1759 }
1760
1761 void RenderProcessHostImpl::AddPendingView() {
1762   pending_views_++;
1763 }
1764
1765 void RenderProcessHostImpl::RemovePendingView() {
1766   DCHECK(pending_views_);
1767   pending_views_--;
1768 }
1769
1770 void RenderProcessHostImpl::SetSuddenTerminationAllowed(bool enabled) {
1771   sudden_termination_allowed_ = enabled;
1772 }
1773
1774 bool RenderProcessHostImpl::SuddenTerminationAllowed() const {
1775   return sudden_termination_allowed_;
1776 }
1777
1778 base::TimeDelta RenderProcessHostImpl::GetChildProcessIdleTime() const {
1779   return base::TimeTicks::Now() - child_process_activity_time_;
1780 }
1781
1782 void RenderProcessHostImpl::ResumeRequestsForView(int route_id) {
1783   widget_helper_->ResumeRequestsForView(route_id);
1784 }
1785
1786 void RenderProcessHostImpl::FilterURL(bool empty_allowed, GURL* url) {
1787   FilterURL(this, empty_allowed, url);
1788 }
1789
1790 #if defined(ENABLE_WEBRTC)
1791 void RenderProcessHostImpl::EnableAudioDebugRecordings(
1792     const base::FilePath& file) {
1793   DCHECK_CURRENTLY_ON(BrowserThread::UI);
1794
1795   // Enable AEC dump for each registered consumer.
1796   base::FilePath file_with_extensions =
1797       GetAecDumpFilePathWithExtensions(file);
1798   for (std::vector<int>::iterator it = aec_dump_consumers_.begin();
1799        it != aec_dump_consumers_.end(); ++it) {
1800     EnableAecDumpForId(file_with_extensions, *it);
1801   }
1802
1803   // Enable mic input recording. AudioInputRendererHost is reference counted, so
1804   // it's lifetime is guarantueed during the lifetime of the closure.
1805   BrowserThread::PostTask(
1806       BrowserThread::IO, FROM_HERE,
1807       base::Bind(&AudioInputRendererHost::EnableDebugRecording,
1808                  audio_input_renderer_host_,
1809                  file));
1810 }
1811
1812 void RenderProcessHostImpl::DisableAudioDebugRecordings() {
1813   DCHECK_CURRENTLY_ON(BrowserThread::UI);
1814
1815   // Posting on the FILE thread and then replying back on the UI thread is only
1816   // for avoiding races between enable and disable. Nothing is done on the FILE
1817   // thread.
1818   BrowserThread::PostTaskAndReply(
1819       BrowserThread::FILE, FROM_HERE,
1820       base::Bind(&DisableAecDumpOnFileThread),
1821       base::Bind(&RenderProcessHostImpl::SendDisableAecDumpToRenderer,
1822                  weak_factory_.GetWeakPtr()));
1823
1824   // AudioInputRendererHost is reference counted, so it's lifetime is
1825   // guaranteed during the lifetime of the closure.
1826   BrowserThread::PostTask(
1827       BrowserThread::IO, FROM_HERE,
1828       base::Bind(
1829           &AudioInputRendererHost::DisableDebugRecording,
1830           audio_input_renderer_host_));
1831 }
1832
1833 void RenderProcessHostImpl::SetWebRtcLogMessageCallback(
1834     base::Callback<void(const std::string&)> callback) {
1835   webrtc_log_message_callback_ = callback;
1836 }
1837
1838 RenderProcessHostImpl::WebRtcStopRtpDumpCallback
1839 RenderProcessHostImpl::StartRtpDump(
1840     bool incoming,
1841     bool outgoing,
1842     const WebRtcRtpPacketCallback& packet_callback) {
1843   if (!p2p_socket_dispatcher_host_.get())
1844     return WebRtcStopRtpDumpCallback();
1845
1846   BrowserThread::PostTask(BrowserThread::IO,
1847                           FROM_HERE,
1848                           base::Bind(&P2PSocketDispatcherHost::StartRtpDump,
1849                                      p2p_socket_dispatcher_host_,
1850                                      incoming,
1851                                      outgoing,
1852                                      packet_callback));
1853
1854   if (stop_rtp_dump_callback_.is_null()) {
1855     stop_rtp_dump_callback_ =
1856         base::Bind(&P2PSocketDispatcherHost::StopRtpDumpOnUIThread,
1857                    p2p_socket_dispatcher_host_);
1858   }
1859   return stop_rtp_dump_callback_;
1860 }
1861 #endif
1862
1863 IPC::ChannelProxy* RenderProcessHostImpl::GetChannel() {
1864   return channel_.get();
1865 }
1866
1867 void RenderProcessHostImpl::AddFilter(BrowserMessageFilter* filter) {
1868   channel_->AddFilter(filter->GetFilter());
1869 }
1870
1871 bool RenderProcessHostImpl::FastShutdownForPageCount(size_t count) {
1872   if (GetActiveViewCount() == count)
1873     return FastShutdownIfPossible();
1874   return false;
1875 }
1876
1877 bool RenderProcessHostImpl::FastShutdownStarted() const {
1878   return fast_shutdown_started_;
1879 }
1880
1881 // static
1882 void RenderProcessHostImpl::RegisterHost(int host_id, RenderProcessHost* host) {
1883   g_all_hosts.Get().AddWithID(host, host_id);
1884 }
1885
1886 // static
1887 void RenderProcessHostImpl::UnregisterHost(int host_id) {
1888   RenderProcessHost* host = g_all_hosts.Get().Lookup(host_id);
1889   if (!host)
1890     return;
1891
1892   g_all_hosts.Get().Remove(host_id);
1893
1894   // Look up the map of site to process for the given browser_context,
1895   // in case we need to remove this process from it.  It will be registered
1896   // under any sites it rendered that use process-per-site mode.
1897   SiteProcessMap* map =
1898       GetSiteProcessMapForBrowserContext(host->GetBrowserContext());
1899   map->RemoveProcess(host);
1900 }
1901
1902 // static
1903 void RenderProcessHostImpl::FilterURL(RenderProcessHost* rph,
1904                                       bool empty_allowed,
1905                                       GURL* url) {
1906   ChildProcessSecurityPolicyImpl* policy =
1907       ChildProcessSecurityPolicyImpl::GetInstance();
1908
1909   if (empty_allowed && url->is_empty())
1910     return;
1911
1912   // The browser process should never hear the swappedout:// URL from any
1913   // of the renderer's messages.  Check for this in debug builds, but don't
1914   // let it crash a release browser.
1915   DCHECK(GURL(kSwappedOutURL) != *url);
1916
1917   if (!url->is_valid()) {
1918     // Have to use about:blank for the denied case, instead of an empty GURL.
1919     // This is because the browser treats navigation to an empty GURL as a
1920     // navigation to the home page. This is often a privileged page
1921     // (chrome://newtab/) which is exactly what we don't want.
1922     *url = GURL(url::kAboutBlankURL);
1923     return;
1924   }
1925
1926   if (url->SchemeIs(url::kAboutScheme)) {
1927     // The renderer treats all URLs in the about: scheme as being about:blank.
1928     // Canonicalize about: URLs to about:blank.
1929     *url = GURL(url::kAboutBlankURL);
1930   }
1931
1932   // Do not allow browser plugin guests to navigate to non-web URLs, since they
1933   // cannot swap processes or grant bindings.
1934   bool non_web_url_in_guest = rph->IsForGuestsOnly() &&
1935       !(url->is_valid() && policy->IsWebSafeScheme(url->scheme()));
1936
1937   if (non_web_url_in_guest || !policy->CanRequestURL(rph->GetID(), *url)) {
1938     // If this renderer is not permitted to request this URL, we invalidate the
1939     // URL.  This prevents us from storing the blocked URL and becoming confused
1940     // later.
1941     VLOG(1) << "Blocked URL " << url->spec();
1942     *url = GURL(url::kAboutBlankURL);
1943   }
1944 }
1945
1946 // static
1947 bool RenderProcessHostImpl::IsSuitableHost(
1948     RenderProcessHost* host,
1949     BrowserContext* browser_context,
1950     const GURL& site_url) {
1951   if (run_renderer_in_process())
1952     return true;
1953
1954   if (host->GetBrowserContext() != browser_context)
1955     return false;
1956
1957   // Do not allow sharing of guest hosts. This is to prevent bugs where guest
1958   // and non-guest storage gets mixed. In the future, we might consider enabling
1959   // the sharing of guests, in this case this check should be removed and
1960   // InSameStoragePartition should handle the possible sharing.
1961   if (host->IsForGuestsOnly())
1962     return false;
1963
1964   // Check whether the given host and the intended site_url will be using the
1965   // same StoragePartition, since a RenderProcessHost can only support a single
1966   // StoragePartition.  This is relevant for packaged apps.
1967   StoragePartition* dest_partition =
1968       BrowserContext::GetStoragePartitionForSite(browser_context, site_url);
1969   if (!host->InSameStoragePartition(dest_partition))
1970     return false;
1971
1972   // TODO(nick): Consult the SiteIsolationPolicy here. https://crbug.com/513036
1973   if (ChildProcessSecurityPolicyImpl::GetInstance()->HasWebUIBindings(
1974           host->GetID()) !=
1975       WebUIControllerFactoryRegistry::GetInstance()->UseWebUIBindingsForURL(
1976           browser_context, site_url)) {
1977     return false;
1978   }
1979
1980   return GetContentClient()->browser()->IsSuitableHost(host, site_url);
1981 }
1982
1983 // static
1984 bool RenderProcessHost::run_renderer_in_process() {
1985   return g_run_renderer_in_process_;
1986 }
1987
1988 // static
1989 void RenderProcessHost::SetRunRendererInProcess(bool value) {
1990   g_run_renderer_in_process_ = value;
1991
1992   base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
1993   if (value) {
1994     if (!command_line->HasSwitch(switches::kLang)) {
1995       // Modify the current process' command line to include the browser locale,
1996       // as the renderer expects this flag to be set.
1997       const std::string locale =
1998           GetContentClient()->browser()->GetApplicationLocale();
1999       command_line->AppendSwitchASCII(switches::kLang, locale);
2000     }
2001     // TODO(piman): we should really send configuration through bools rather
2002     // than by parsing strings, i.e. sending an IPC rather than command line
2003     // args. crbug.com/314909
2004     AppendCompositorCommandLineFlags(command_line);
2005   }
2006 }
2007
2008 // static
2009 RenderProcessHost::iterator RenderProcessHost::AllHostsIterator() {
2010   DCHECK_CURRENTLY_ON(BrowserThread::UI);
2011   return iterator(g_all_hosts.Pointer());
2012 }
2013
2014 // static
2015 RenderProcessHost* RenderProcessHost::FromID(int render_process_id) {
2016   DCHECK_CURRENTLY_ON(BrowserThread::UI);
2017   return g_all_hosts.Get().Lookup(render_process_id);
2018 }
2019
2020 // static
2021 bool RenderProcessHost::ShouldTryToUseExistingProcessHost(
2022     BrowserContext* browser_context, const GURL& url) {
2023   // If --site-per-process is enabled, do not try to reuse renderer processes
2024   // when over the limit.
2025   // TODO(nick): This is overly conservative and isn't launchable. Move this
2026   // logic into IsSuitableHost, and check |url| against the URL the process is
2027   // dedicated to. This will allow pages from the same site to share, and will
2028   // also allow non-isolated sites to share processes. https://crbug.com/513036
2029   if (SiteIsolationPolicy::AreCrossProcessFramesPossible())
2030     return false;
2031
2032   if (run_renderer_in_process())
2033     return true;
2034
2035   // NOTE: Sometimes it's necessary to create more render processes than
2036   //       GetMaxRendererProcessCount(), for instance when we want to create
2037   //       a renderer process for a browser context that has no existing
2038   //       renderers. This is OK in moderation, since the
2039   //       GetMaxRendererProcessCount() is conservative.
2040   if (g_all_hosts.Get().size() >= GetMaxRendererProcessCount())
2041     return true;
2042
2043   return GetContentClient()->browser()->
2044       ShouldTryToUseExistingProcessHost(browser_context, url);
2045 }
2046
2047 // static
2048 RenderProcessHost* RenderProcessHost::GetExistingProcessHost(
2049     BrowserContext* browser_context,
2050     const GURL& site_url) {
2051   // First figure out which existing renderers we can use.
2052   std::vector<RenderProcessHost*> suitable_renderers;
2053   suitable_renderers.reserve(g_all_hosts.Get().size());
2054
2055   iterator iter(AllHostsIterator());
2056   while (!iter.IsAtEnd()) {
2057     if (GetContentClient()->browser()->MayReuseHost(iter.GetCurrentValue()) &&
2058         RenderProcessHostImpl::IsSuitableHost(
2059             iter.GetCurrentValue(),
2060             browser_context, site_url)) {
2061       suitable_renderers.push_back(iter.GetCurrentValue());
2062     }
2063     iter.Advance();
2064   }
2065
2066   // Now pick a random suitable renderer, if we have any.
2067   if (!suitable_renderers.empty()) {
2068     int suitable_count = static_cast<int>(suitable_renderers.size());
2069     int random_index = base::RandInt(0, suitable_count - 1);
2070     return suitable_renderers[random_index];
2071   }
2072
2073   return NULL;
2074 }
2075
2076 // static
2077 bool RenderProcessHost::ShouldUseProcessPerSite(
2078     BrowserContext* browser_context,
2079     const GURL& url) {
2080   // Returns true if we should use the process-per-site model.  This will be
2081   // the case if the --process-per-site switch is specified, or in
2082   // process-per-site-instance for particular sites (e.g., WebUI).
2083   // Note that --single-process is handled in ShouldTryToUseExistingProcessHost.
2084   const base::CommandLine& command_line =
2085       *base::CommandLine::ForCurrentProcess();
2086   if (command_line.HasSwitch(switches::kProcessPerSite))
2087     return true;
2088
2089   // We want to consolidate particular sites like WebUI even when we are using
2090   // the process-per-tab or process-per-site-instance models.
2091   // Note: DevTools pages have WebUI type but should not reuse the same host.
2092   if (WebUIControllerFactoryRegistry::GetInstance()->UseWebUIForURL(
2093           browser_context, url) &&
2094       !url.SchemeIs(kChromeDevToolsScheme)) {
2095     return true;
2096   }
2097
2098   // Otherwise let the content client decide, defaulting to false.
2099   return GetContentClient()->browser()->ShouldUseProcessPerSite(browser_context,
2100                                                                 url);
2101 }
2102
2103 // static
2104 RenderProcessHost* RenderProcessHostImpl::GetProcessHostForSite(
2105     BrowserContext* browser_context,
2106     const GURL& url) {
2107   // Look up the map of site to process for the given browser_context.
2108   SiteProcessMap* map =
2109       GetSiteProcessMapForBrowserContext(browser_context);
2110
2111   // See if we have an existing process with appropriate bindings for this site.
2112   // If not, the caller should create a new process and register it.
2113   std::string site = SiteInstance::GetSiteForURL(browser_context, url)
2114       .possibly_invalid_spec();
2115   RenderProcessHost* host = map->FindProcess(site);
2116   if (host && (!GetContentClient()->browser()->MayReuseHost(host) ||
2117                !IsSuitableHost(host, browser_context, url))) {
2118     // The registered process does not have an appropriate set of bindings for
2119     // the url.  Remove it from the map so we can register a better one.
2120     RecordAction(
2121         base::UserMetricsAction("BindingsMismatch_GetProcessHostPerSite"));
2122     map->RemoveProcess(host);
2123     host = NULL;
2124   }
2125
2126   return host;
2127 }
2128
2129 void RenderProcessHostImpl::RegisterProcessHostForSite(
2130     BrowserContext* browser_context,
2131     RenderProcessHost* process,
2132     const GURL& url) {
2133   // Look up the map of site to process for the given browser_context.
2134   SiteProcessMap* map =
2135       GetSiteProcessMapForBrowserContext(browser_context);
2136
2137   // Only register valid, non-empty sites.  Empty or invalid sites will not
2138   // use process-per-site mode.  We cannot check whether the process has
2139   // appropriate bindings here, because the bindings have not yet been granted.
2140   std::string site = SiteInstance::GetSiteForURL(browser_context, url)
2141       .possibly_invalid_spec();
2142   if (!site.empty())
2143     map->RegisterProcess(site, process);
2144 }
2145
2146 void RenderProcessHostImpl::ProcessDied(bool already_dead,
2147                                         RendererClosedDetails* known_details) {
2148   // Our child process has died.  If we didn't expect it, it's a crash.
2149   // In any case, we need to let everyone know it's gone.
2150   // The OnChannelError notification can fire multiple times due to nested sync
2151   // calls to a renderer. If we don't have a valid channel here it means we
2152   // already handled the error.
2153
2154   // It should not be possible for us to be called re-entrantly.
2155   DCHECK(!within_process_died_observer_);
2156
2157   // It should not be possible for a process death notification to come in while
2158   // we are dying.
2159   DCHECK(!deleting_soon_);
2160
2161   // child_process_launcher_ can be NULL in single process mode or if fast
2162   // termination happened.
2163   base::TerminationStatus status = base::TERMINATION_STATUS_NORMAL_TERMINATION;
2164   int exit_code = 0;
2165   if (known_details) {
2166     status = known_details->status;
2167     exit_code = known_details->exit_code;
2168   } else if (child_process_launcher_.get()) {
2169     status = child_process_launcher_->GetChildTerminationStatus(already_dead,
2170                                                                 &exit_code);
2171     if (already_dead && status == base::TERMINATION_STATUS_STILL_RUNNING) {
2172       // May be in case of IPC error, if it takes long time for renderer
2173       // to exit. Child process will be killed in any case during
2174       // child_process_launcher_.reset(). Make sure we will not broadcast
2175       // FrameHostMsg_RenderProcessGone with status
2176       // TERMINATION_STATUS_STILL_RUNNING, since this will break WebContentsImpl
2177       // logic.
2178       status = base::TERMINATION_STATUS_PROCESS_CRASHED;
2179     }
2180   }
2181
2182   RendererClosedDetails details(status, exit_code);
2183   mojo_application_host_->WillDestroySoon();
2184
2185   child_process_launcher_.reset();
2186   channel_.reset();
2187   while (!queued_messages_.empty()) {
2188     delete queued_messages_.front();
2189     queued_messages_.pop();
2190   }
2191
2192   within_process_died_observer_ = true;
2193   NotificationService::current()->Notify(
2194       NOTIFICATION_RENDERER_PROCESS_CLOSED,
2195       Source<RenderProcessHost>(this),
2196       Details<RendererClosedDetails>(&details));
2197   FOR_EACH_OBSERVER(RenderProcessHostObserver,
2198                     observers_,
2199                     RenderProcessExited(this, status, exit_code));
2200   within_process_died_observer_ = false;
2201
2202   gpu_message_filter_ = NULL;
2203   message_port_message_filter_ = NULL;
2204   RemoveUserData(kSessionStorageHolderKey);
2205
2206   // RenderProcessGone handlers might navigate or perform other actions that
2207   // require a connection. Ensure that there is one before calling them.
2208   mojo_application_host_.reset(new MojoApplicationHost);
2209
2210   IDMap<IPC::Listener>::iterator iter(&listeners_);
2211   while (!iter.IsAtEnd()) {
2212     iter.GetCurrentValue()->OnMessageReceived(
2213         FrameHostMsg_RenderProcessGone(iter.GetCurrentKey(),
2214                                        static_cast<int>(status),
2215                                        exit_code));
2216     iter.Advance();
2217   }
2218
2219   // It's possible that one of the calls out to the observers might have caused
2220   // this object to be no longer needed.
2221   if (delayed_cleanup_needed_)
2222     Cleanup();
2223
2224   // This object is not deleted at this point and might be reused later.
2225   // TODO(darin): clean this up
2226 }
2227
2228 size_t RenderProcessHost::GetActiveViewCount() {
2229   size_t num_active_views = 0;
2230   scoped_ptr<RenderWidgetHostIterator> widgets(
2231       RenderWidgetHost::GetRenderWidgetHosts());
2232   while (RenderWidgetHost* widget = widgets->GetNextHost()) {
2233     // Count only RenderWidgetHosts in this process.
2234     if (widget->GetProcess()->GetID() == GetID())
2235       num_active_views++;
2236   }
2237   return num_active_views;
2238 }
2239
2240 #if defined(ENABLE_WEBRTC)
2241 void RenderProcessHostImpl::WebRtcLogMessage(const std::string& message) {
2242   DCHECK_CURRENTLY_ON(BrowserThread::UI);
2243   if (!webrtc_log_message_callback_.is_null())
2244     webrtc_log_message_callback_.Run(message);
2245 }
2246 #endif
2247
2248 void RenderProcessHostImpl::ReleaseOnCloseACK(
2249     RenderProcessHost* host,
2250     const SessionStorageNamespaceMap& sessions,
2251     int view_route_id) {
2252   DCHECK(host);
2253   if (sessions.empty())
2254     return;
2255   SessionStorageHolder* holder = static_cast<SessionStorageHolder*>
2256       (host->GetUserData(kSessionStorageHolderKey));
2257   if (!holder) {
2258     holder = new SessionStorageHolder();
2259     host->SetUserData(
2260         kSessionStorageHolderKey,
2261         holder);
2262   }
2263   holder->Hold(sessions, view_route_id);
2264 }
2265
2266 void RenderProcessHostImpl::OnShutdownRequest() {
2267   // Don't shut down if there are active RenderViews, or if there are pending
2268   // RenderViews being swapped back in.
2269   // In single process mode, we never shutdown the renderer.
2270   if (pending_views_ || run_renderer_in_process() || GetActiveViewCount() > 0)
2271     return;
2272
2273   // Notify any contents that might have swapped out renderers from this
2274   // process. They should not attempt to swap them back in.
2275   FOR_EACH_OBSERVER(RenderProcessHostObserver, observers_,
2276                     RenderProcessWillExit(this));
2277
2278   mojo_application_host_->WillDestroySoon();
2279
2280   Send(new ChildProcessMsg_Shutdown());
2281 }
2282
2283 void RenderProcessHostImpl::SuddenTerminationChanged(bool enabled) {
2284   SetSuddenTerminationAllowed(enabled);
2285 }
2286
2287 void RenderProcessHostImpl::SetBackgrounded(bool backgrounded) {
2288   TRACE_EVENT1("renderer_host", "RenderProcessHostImpl::SetBackgrounded",
2289                "backgrounded", backgrounded);
2290   // Note: we always set the backgrounded_ value.  If the process is NULL
2291   // (and hence hasn't been created yet), we will set the process priority
2292   // later when we create the process.
2293   backgrounded_ = backgrounded;
2294   if (!child_process_launcher_.get() || child_process_launcher_->IsStarting())
2295     return;
2296
2297   // Don't background processes which have active audio streams.
2298   if (backgrounded_ && audio_renderer_host_->HasActiveAudio())
2299     return;
2300
2301   const base::CommandLine* command_line =
2302       base::CommandLine::ForCurrentProcess();
2303   if (command_line->HasSwitch(switches::kDisableRendererBackgrounding))
2304     return;
2305
2306 #if defined(OS_WIN)
2307   // The cbstext.dll loads as a global GetMessage hook in the browser process
2308   // and intercepts/unintercepts the kernel32 API SetPriorityClass in a
2309   // background thread. If the UI thread invokes this API just when it is
2310   // intercepted the stack is messed up on return from the interceptor
2311   // which causes random crashes in the browser process. Our hack for now
2312   // is to not invoke the SetPriorityClass API if the dll is loaded.
2313   if (GetModuleHandle(L"cbstext.dll"))
2314     return;
2315 #endif  // OS_WIN
2316
2317 #if defined(OS_WIN) || defined(OS_MACOSX)
2318   // Same as below, but bound to an experiment (http://crbug.com/458594 on
2319   // Windows, http://crbug.com/398103 on the Mac). Enabled by default in the
2320   // absence of field trials to get coverage on the perf waterfall.
2321   base::FieldTrial* trial =
2322       base::FieldTrialList::Find("BackgroundRendererProcesses");
2323   if (!trial || !base::StartsWith(trial->group_name(), "Disallow",
2324                                   base::CompareCase::SENSITIVE)) {
2325     child_process_launcher_->SetProcessBackgrounded(backgrounded);
2326   }
2327 #else
2328   // Control the background state from the browser process, otherwise the task
2329   // telling the renderer to "unbackground" itself may be preempted by other
2330   // tasks executing at lowered priority ahead of it or simply by not being
2331   // swiftly scheduled by the OS per the low process priority
2332   // (http://crbug.com/398103).
2333   child_process_launcher_->SetProcessBackgrounded(backgrounded);
2334 #endif  // OS_WIN
2335
2336   // Notify the child process of background state.
2337   Send(new ChildProcessMsg_SetProcessBackgrounded(backgrounded));
2338 }
2339
2340 void RenderProcessHostImpl::OnProcessLaunched() {
2341   // TODO(erikchen): Remove ScopedTracker below once http://crbug.com/465841
2342   // is fixed.
2343   tracked_objects::ScopedTracker tracking_profile1(
2344       FROM_HERE_WITH_EXPLICIT_FUNCTION(
2345           "465841 RenderProcessHostImpl::OnProcessLaunched::Start"));
2346   // No point doing anything, since this object will be destructed soon.  We
2347   // especially don't want to send the RENDERER_PROCESS_CREATED notification,
2348   // since some clients might expect a RENDERER_PROCESS_TERMINATED afterwards to
2349   // properly cleanup.
2350   if (deleting_soon_)
2351     return;
2352
2353   if (child_process_launcher_) {
2354     // TODO(erikchen): Remove ScopedTracker below once http://crbug.com/465841
2355     // is fixed.
2356     tracked_objects::ScopedTracker tracking_profile2(
2357         FROM_HERE_WITH_EXPLICIT_FUNCTION(
2358             "465841 RenderProcessHostImpl::OnProcessLaunched::Backgrounded"));
2359     DCHECK(child_process_launcher_->GetProcess().IsValid());
2360     SetBackgrounded(backgrounded_);
2361   }
2362
2363   // TODO(erikchen): Remove ScopedTracker below once http://crbug.com/465841
2364   // is fixed.
2365   tracked_objects::ScopedTracker tracking_profile3(
2366       FROM_HERE_WITH_EXPLICIT_FUNCTION(
2367           "465841 RenderProcessHostImpl::OnProcessLaunched::Notify"));
2368   // NOTE: This needs to be before sending queued messages because
2369   // ExtensionService uses this notification to initialize the renderer process
2370   // with state that must be there before any JavaScript executes.
2371   //
2372   // The queued messages contain such things as "navigate". If this notification
2373   // was after, we can end up executing JavaScript before the initialization
2374   // happens.
2375   NotificationService::current()->Notify(
2376       NOTIFICATION_RENDERER_PROCESS_CREATED,
2377       Source<RenderProcessHost>(this),
2378       NotificationService::NoDetails());
2379
2380   // TODO(erikchen): Remove ScopedTracker below once http://crbug.com/465841
2381   // is fixed.
2382   tracked_objects::ScopedTracker tracking_profile4(
2383       FROM_HERE_WITH_EXPLICIT_FUNCTION(
2384           "465841 RenderProcessHostImpl::OnProcessLaunched::MojoActivate"));
2385   // Allow Mojo to be setup before the renderer sees any Chrome IPC messages.
2386   // This way, Mojo can be safely used from the renderer in response to any
2387   // Chrome IPC message.
2388   mojo_application_host_->Activate(this, GetHandle());
2389
2390   // TODO(erikchen): Remove ScopedTracker below once http://crbug.com/465841
2391   // is fixed.
2392   tracked_objects::ScopedTracker tracking_profile5(
2393       FROM_HERE_WITH_EXPLICIT_FUNCTION(
2394           "465841 RenderProcessHostImpl::OnProcessLaunched::MojoClientLaunch"));
2395
2396   // TODO(erikchen): Remove ScopedTracker below once http://crbug.com/465841
2397   // is fixed.
2398   tracked_objects::ScopedTracker tracking_profile6(
2399       FROM_HERE_WITH_EXPLICIT_FUNCTION(
2400           "465841 "
2401           "RenderProcessHostImpl::OnProcessLaunched::SendQueuedMessages"));
2402   while (!queued_messages_.empty()) {
2403     Send(queued_messages_.front());
2404     queued_messages_.pop();
2405   }
2406
2407 #if defined(ENABLE_WEBRTC)
2408   // TODO(erikchen): Remove ScopedTracker below once http://crbug.com/465841
2409   // is fixed.
2410   tracked_objects::ScopedTracker tracking_profile7(
2411       FROM_HERE_WITH_EXPLICIT_FUNCTION(
2412           "465841 RenderProcessHostImpl::OnProcessLaunched::EnableAec"));
2413   if (WebRTCInternals::GetInstance()->IsAudioDebugRecordingsEnabled()) {
2414     EnableAudioDebugRecordings(
2415         WebRTCInternals::GetInstance()->GetAudioDebugRecordingsFilePath());
2416   }
2417 #endif
2418 }
2419
2420 void RenderProcessHostImpl::OnProcessLaunchFailed() {
2421   // If this object will be destructed soon, then observers have already been
2422   // sent a RenderProcessHostDestroyed notification, and we must observe our
2423   // contract that says that will be the last call.
2424   if (deleting_soon_)
2425     return;
2426
2427   // TODO(wfh): Fill in the real error code here see crbug.com/526198.
2428   RendererClosedDetails details { base::TERMINATION_STATUS_LAUNCH_FAILED,
2429                                   -1 };
2430   ProcessDied(true, &details);
2431 }
2432
2433 scoped_refptr<AudioRendererHost>
2434 RenderProcessHostImpl::audio_renderer_host() const {
2435   return audio_renderer_host_;
2436 }
2437
2438 void RenderProcessHostImpl::OnUserMetricsRecordAction(
2439     const std::string& action) {
2440   RecordComputedAction(action);
2441 }
2442
2443 void RenderProcessHostImpl::OnCloseACK(int old_route_id) {
2444   SessionStorageHolder* holder = static_cast<SessionStorageHolder*>
2445       (GetUserData(kSessionStorageHolderKey));
2446   if (!holder)
2447     return;
2448   holder->Release(old_route_id);
2449 }
2450
2451 void RenderProcessHostImpl::OnSavedPageAsMHTML(int job_id, int64 data_size) {
2452   MHTMLGenerationManager::GetInstance()->MHTMLGenerated(job_id, data_size);
2453 }
2454
2455 void RenderProcessHostImpl::OnGpuSwitched() {
2456   // We are updating all widgets including swapped out ones.
2457   scoped_ptr<RenderWidgetHostIterator> widgets(
2458       RenderWidgetHostImpl::GetAllRenderWidgetHosts());
2459   while (RenderWidgetHost* widget = widgets->GetNextHost()) {
2460     if (!widget->IsRenderView())
2461       continue;
2462
2463     // Skip widgets in other processes.
2464     if (widget->GetProcess()->GetID() != GetID())
2465       continue;
2466
2467     RenderViewHost* rvh = RenderViewHost::From(widget);
2468     rvh->OnWebkitPreferencesChanged();
2469   }
2470 }
2471
2472 #if defined(ENABLE_WEBRTC)
2473 void RenderProcessHostImpl::OnRegisterAecDumpConsumer(int id) {
2474   BrowserThread::PostTask(
2475       BrowserThread::UI,
2476       FROM_HERE,
2477       base::Bind(
2478           &RenderProcessHostImpl::RegisterAecDumpConsumerOnUIThread,
2479           weak_factory_.GetWeakPtr(),
2480           id));
2481 }
2482
2483 void RenderProcessHostImpl::OnUnregisterAecDumpConsumer(int id) {
2484   BrowserThread::PostTask(
2485       BrowserThread::UI,
2486       FROM_HERE,
2487       base::Bind(
2488           &RenderProcessHostImpl::UnregisterAecDumpConsumerOnUIThread,
2489           weak_factory_.GetWeakPtr(),
2490           id));
2491 }
2492
2493 void RenderProcessHostImpl::RegisterAecDumpConsumerOnUIThread(int id) {
2494   DCHECK_CURRENTLY_ON(BrowserThread::UI);
2495   aec_dump_consumers_.push_back(id);
2496
2497   if (WebRTCInternals::GetInstance()->IsAudioDebugRecordingsEnabled()) {
2498     base::FilePath file_with_extensions = GetAecDumpFilePathWithExtensions(
2499         WebRTCInternals::GetInstance()->GetAudioDebugRecordingsFilePath());
2500     EnableAecDumpForId(file_with_extensions, id);
2501   }
2502 }
2503
2504 void RenderProcessHostImpl::UnregisterAecDumpConsumerOnUIThread(int id) {
2505   DCHECK_CURRENTLY_ON(BrowserThread::UI);
2506   for (std::vector<int>::iterator it = aec_dump_consumers_.begin();
2507        it != aec_dump_consumers_.end(); ++it) {
2508     if (*it == id) {
2509       aec_dump_consumers_.erase(it);
2510       break;
2511     }
2512   }
2513 }
2514
2515 void RenderProcessHostImpl::EnableAecDumpForId(const base::FilePath& file,
2516                                                int id) {
2517   DCHECK_CURRENTLY_ON(BrowserThread::UI);
2518   BrowserThread::PostTaskAndReplyWithResult(
2519       BrowserThread::FILE, FROM_HERE,
2520       base::Bind(&CreateAecDumpFileForProcess,
2521                  file.AddExtension(IntToStringType(id)),
2522                  GetHandle()),
2523       base::Bind(&RenderProcessHostImpl::SendAecDumpFileToRenderer,
2524                  weak_factory_.GetWeakPtr(),
2525                  id));
2526 }
2527
2528 void RenderProcessHostImpl::SendAecDumpFileToRenderer(
2529     int id,
2530     IPC::PlatformFileForTransit file_for_transit) {
2531   if (file_for_transit == IPC::InvalidPlatformFileForTransit())
2532     return;
2533   Send(new AecDumpMsg_EnableAecDump(id, file_for_transit));
2534 }
2535
2536 void RenderProcessHostImpl::SendDisableAecDumpToRenderer() {
2537   Send(new AecDumpMsg_DisableAecDump());
2538 }
2539
2540 base::FilePath RenderProcessHostImpl::GetAecDumpFilePathWithExtensions(
2541     const base::FilePath& file) {
2542   return file.AddExtension(IntToStringType(base::GetProcId(GetHandle())))
2543              .AddExtension(kAecDumpFileNameAddition);
2544 }
2545 #endif  // defined(ENABLE_WEBRTC)
2546
2547 void RenderProcessHostImpl::IncrementWorkerRefCount() {
2548   DCHECK_CURRENTLY_ON(BrowserThread::UI);
2549   ++worker_ref_count_;
2550   if (worker_ref_count_ > max_worker_count_)
2551     max_worker_count_ = worker_ref_count_;
2552 }
2553
2554 void RenderProcessHostImpl::DecrementWorkerRefCount() {
2555   DCHECK_CURRENTLY_ON(BrowserThread::UI);
2556   DCHECK_GT(worker_ref_count_, 0);
2557   --worker_ref_count_;
2558   if (worker_ref_count_ == 0)
2559     Cleanup();
2560 }
2561
2562 void RenderProcessHostImpl::GetAudioOutputControllers(
2563     const GetAudioOutputControllersCallback& callback) const {
2564   audio_renderer_host()->GetOutputControllers(callback);
2565 }
2566
2567 BluetoothDispatcherHost* RenderProcessHostImpl::GetBluetoothDispatcherHost() {
2568   return bluetooth_dispatcher_host_.get();
2569 }
2570
2571 }  // namespace content