content/browser/renderer_host/render_view_host_impl.cc

   1 // Copyright (c) 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 #include "content/browser/renderer_host/render_view_host_impl.h"
   6
   7 #include <set>
   8 #include <string>
   9 #include <utility>
  10 #include <vector>
  11
  12 #include "base/callback.h"
  13 #include "base/command_line.h"
  14 #include "base/i18n/rtl.h"
  15 #include "base/json/json_reader.h"
  16 #include "base/message_loop/message_loop.h"
  17 #include "base/metrics/field_trial.h"
  18 #include "base/metrics/histogram.h"
  19 #include "base/stl_util.h"
  20 #include "base/strings/string_util.h"
  21 #include "base/strings/utf_string_conversions.h"
  22 #include "base/sys_info.h"
  23 #include "base/time/time.h"
  24 #include "base/trace_event/trace_event.h"
  25 #include "base/values.h"
  26 #include "cc/base/switches.h"
  27 #include "content/browser/bad_message.h"
  28 #include "content/browser/child_process_security_policy_impl.h"
  29 #include "content/browser/dom_storage/session_storage_namespace_impl.h"
  30 #include "content/browser/frame_host/frame_tree.h"
  31 #include "content/browser/gpu/compositor_util.h"
  32 #include "content/browser/gpu/gpu_data_manager_impl.h"
  33 #include "content/browser/gpu/gpu_process_host.h"
  34 #include "content/browser/gpu/gpu_surface_tracker.h"
  35 #include "content/browser/host_zoom_map_impl.h"
  36 #include "content/browser/loader/resource_dispatcher_host_impl.h"
  37 #include "content/browser/renderer_host/dip_util.h"
  38 #include "content/browser/renderer_host/media/audio_renderer_host.h"
  39 #include "content/browser/renderer_host/render_process_host_impl.h"
  40 #include "content/browser/renderer_host/render_view_host_delegate.h"
  41 #include "content/browser/renderer_host/render_view_host_delegate_view.h"
  42 #include "content/browser/renderer_host/render_widget_host_view_base.h"
  43 #include "content/common/browser_plugin/browser_plugin_messages.h"
  44 #include "content/common/content_switches_internal.h"
  45 #include "content/common/drag_messages.h"
  46 #include "content/common/frame_messages.h"
  47 #include "content/common/input_messages.h"
  48 #include "content/common/inter_process_time_ticks_converter.h"
  49 #include "content/common/speech_recognition_messages.h"
  50 #include "content/common/swapped_out_messages.h"
  51 #include "content/common/view_messages.h"
  52 #include "content/public/browser/ax_event_notification_details.h"
  53 #include "content/public/browser/browser_accessibility_state.h"
  54 #include "content/public/browser/browser_context.h"
  55 #include "content/public/browser/browser_message_filter.h"
  56 #include "content/public/browser/content_browser_client.h"
  57 #include "content/public/browser/focused_node_details.h"
  58 #include "content/public/browser/native_web_keyboard_event.h"
  59 #include "content/public/browser/notification_details.h"
  60 #include "content/public/browser/notification_service.h"
  61 #include "content/public/browser/notification_types.h"
  62 #include "content/public/browser/render_frame_host.h"
  63 #include "content/public/browser/render_widget_host_iterator.h"
  64 #include "content/public/browser/storage_partition.h"
  65 #include "content/public/browser/user_metrics.h"
  66 #include "content/public/common/bindings_policy.h"
  67 #include "content/public/common/content_constants.h"
  68 #include "content/public/common/content_switches.h"
  69 #include "content/public/common/context_menu_params.h"
  70 #include "content/public/common/drop_data.h"
  71 #include "content/public/common/file_chooser_file_info.h"
  72 #include "content/public/common/file_chooser_params.h"
  73 #include "content/public/common/result_codes.h"
  74 #include "content/public/common/url_constants.h"
  75 #include "content/public/common/url_utils.h"
  76 #include "net/base/filename_util.h"
  77 #include "net/base/net_util.h"
  78 #include "net/base/network_change_notifier.h"
  79 #include "net/url_request/url_request_context_getter.h"
  80 #include "storage/browser/fileapi/isolated_context.h"
  81 #include "third_party/skia/include/core/SkBitmap.h"
  82 #include "ui/base/touch/touch_device.h"
  83 #include "ui/base/touch/touch_enabled.h"
  84 #include "ui/base/ui_base_switches.h"
  85 #include "ui/gfx/image/image_skia.h"
  86 #include "ui/gfx/native_widget_types.h"
  87 #include "ui/native_theme/native_theme_switches.h"
  88 #include "url/url_constants.h"
  89
  90 #if defined(OS_WIN)
  91 #include "base/win/win_util.h"
  92 #include "ui/gfx/platform_font_win.h"
  93 #include "ui/gfx/win/dpi.h"
  94 #endif
  95
  96 using base::TimeDelta;
  97 using blink::WebConsoleMessage;
  98 using blink::WebDragOperation;
  99 using blink::WebDragOperationNone;
 100 using blink::WebDragOperationsMask;
 101 using blink::WebInputEvent;
 102 using blink::WebMediaPlayerAction;
 103 using blink::WebPluginAction;
 104
 105 namespace content {
 106 namespace {
 107
 108 #if defined(OS_WIN)
 109
 110 const int kVirtualKeyboardDisplayWaitTimeoutMs = 100;
 111 const int kMaxVirtualKeyboardDisplayRetries = 5;
 112
 113 void DismissVirtualKeyboardTask() {
 114   static int virtual_keyboard_display_retries = 0;
 115   // If the virtual keyboard is not yet visible, then we execute the task again
 116   // waiting for it to show up.
 117   if (!base::win::DismissVirtualKeyboard()) {
 118     if (virtual_keyboard_display_retries < kMaxVirtualKeyboardDisplayRetries) {
 119       BrowserThread::PostDelayedTask(
 120           BrowserThread::UI, FROM_HERE,
 121           base::Bind(base::IgnoreResult(&DismissVirtualKeyboardTask)),
 122           TimeDelta::FromMilliseconds(kVirtualKeyboardDisplayWaitTimeoutMs));
 123       ++virtual_keyboard_display_retries;
 124     } else {
 125       virtual_keyboard_display_retries = 0;
 126     }
 127   }
 128 }
 129
 130 void GetWindowsSpecificPrefs(RendererPreferences* prefs) {
 131   NONCLIENTMETRICS_XP metrics = {0};
 132   base::win::GetNonClientMetrics(&metrics);
 133
 134   prefs->caption_font_family_name = metrics.lfCaptionFont.lfFaceName;
 135   prefs->caption_font_height = gfx::PlatformFontWin::GetFontSize(
 136       metrics.lfCaptionFont);
 137
 138   prefs->small_caption_font_family_name = metrics.lfSmCaptionFont.lfFaceName;
 139   prefs->small_caption_font_height = gfx::PlatformFontWin::GetFontSize(
 140       metrics.lfSmCaptionFont);
 141
 142   prefs->menu_font_family_name = metrics.lfMenuFont.lfFaceName;
 143   prefs->menu_font_height = gfx::PlatformFontWin::GetFontSize(
 144       metrics.lfMenuFont);
 145
 146   prefs->status_font_family_name = metrics.lfStatusFont.lfFaceName;
 147   prefs->status_font_height = gfx::PlatformFontWin::GetFontSize(
 148       metrics.lfStatusFont);
 149
 150   prefs->message_font_family_name = metrics.lfMessageFont.lfFaceName;
 151   prefs->message_font_height = gfx::PlatformFontWin::GetFontSize(
 152       metrics.lfMessageFont);
 153
 154   prefs->vertical_scroll_bar_width_in_dips =
 155       gfx::win::GetSystemMetricsInDIP(SM_CXVSCROLL);
 156   prefs->horizontal_scroll_bar_height_in_dips =
 157       gfx::win::GetSystemMetricsInDIP(SM_CYHSCROLL);
 158   prefs->arrow_bitmap_height_vertical_scroll_bar_in_dips =
 159       gfx::win::GetSystemMetricsInDIP(SM_CYVSCROLL);
 160   prefs->arrow_bitmap_width_horizontal_scroll_bar_in_dips =
 161       gfx::win::GetSystemMetricsInDIP(SM_CXHSCROLL);
 162 }
 163 #endif
 164
 165 }  // namespace
 166
 167 // static
 168 const int64 RenderViewHostImpl::kUnloadTimeoutMS = 1000;
 169
 170 ///////////////////////////////////////////////////////////////////////////////
 171 // RenderViewHost, public:
 172
 173 // static
 174 RenderViewHost* RenderViewHost::FromID(int render_process_id,
 175                                        int render_view_id) {
 176   return RenderViewHostImpl::FromID(render_process_id, render_view_id);
 177 }
 178
 179 // static
 180 RenderViewHost* RenderViewHost::From(RenderWidgetHost* rwh) {
 181   DCHECK(rwh->IsRenderView());
 182   return static_cast<RenderViewHostImpl*>(RenderWidgetHostImpl::From(rwh));
 183 }
 184
 185 ///////////////////////////////////////////////////////////////////////////////
 186 // RenderViewHostImpl, public:
 187
 188 // static
 189 RenderViewHostImpl* RenderViewHostImpl::FromID(int render_process_id,
 190                                                int render_view_id) {
 191   RenderWidgetHost* widget =
 192       RenderWidgetHost::FromID(render_process_id, render_view_id);
 193   if (!widget || !widget->IsRenderView())
 194     return NULL;
 195   return static_cast<RenderViewHostImpl*>(RenderWidgetHostImpl::From(widget));
 196 }
 197
 198 RenderViewHostImpl::RenderViewHostImpl(
 199     SiteInstance* instance,
 200     RenderViewHostDelegate* delegate,
 201     RenderWidgetHostDelegate* widget_delegate,
 202     int routing_id,
 203     int main_frame_routing_id,
 204     bool swapped_out,
 205     bool hidden,
 206     bool has_initialized_audio_host)
 207     : RenderWidgetHostImpl(widget_delegate,
 208                            instance->GetProcess(),
 209                            routing_id,
 210                            hidden),
 211       frames_ref_count_(0),
 212       delegate_(delegate),
 213       instance_(static_cast<SiteInstanceImpl*>(instance)),
 214       waiting_for_drag_context_response_(false),
 215       enabled_bindings_(0),
 216       page_id_(-1),
 217       is_active_(!swapped_out),
 218       is_swapped_out_(swapped_out),
 219       main_frame_routing_id_(main_frame_routing_id),
 220       is_waiting_for_close_ack_(false),
 221       sudden_termination_allowed_(false),
 222       render_view_termination_status_(base::TERMINATION_STATUS_STILL_RUNNING),
 223       virtual_keyboard_requested_(false),
 224       is_focused_element_editable_(false),
 225       updating_web_preferences_(false),
 226       weak_factory_(this) {
 227   DCHECK(instance_.get());
 228   CHECK(delegate_);  // http://crbug.com/82827
 229
 230   GetProcess()->EnableSendQueue();
 231
 232   if (ResourceDispatcherHostImpl::Get()) {
 233     bool has_active_audio = false;
 234     if (has_initialized_audio_host) {
 235       scoped_refptr<AudioRendererHost> arh =
 236           static_cast<RenderProcessHostImpl*>(GetProcess())
 237               ->audio_renderer_host();
 238       if (arh.get())
 239         has_active_audio =
 240             arh->RenderFrameHasActiveAudio(main_frame_routing_id_);
 241     }
 242     BrowserThread::PostTask(
 243         BrowserThread::IO,
 244         FROM_HERE,
 245         base::Bind(&ResourceDispatcherHostImpl::OnRenderViewHostCreated,
 246                    base::Unretained(ResourceDispatcherHostImpl::Get()),
 247                    GetProcess()->GetID(),
 248                    GetRoutingID(),
 249                    !is_hidden(),
 250                    has_active_audio));
 251   }
 252 }
 253
 254 RenderViewHostImpl::~RenderViewHostImpl() {
 255   if (ResourceDispatcherHostImpl::Get()) {
 256     BrowserThread::PostTask(
 257         BrowserThread::IO, FROM_HERE,
 258         base::Bind(&ResourceDispatcherHostImpl::OnRenderViewHostDeleted,
 259                    base::Unretained(ResourceDispatcherHostImpl::Get()),
 260                    GetProcess()->GetID(), GetRoutingID()));
 261   }
 262
 263   delegate_->RenderViewDeleted(this);
 264 }
 265
 266 RenderViewHostDelegate* RenderViewHostImpl::GetDelegate() const {
 267   return delegate_;
 268 }
 269
 270 SiteInstanceImpl* RenderViewHostImpl::GetSiteInstance() const {
 271   return instance_.get();
 272 }
 273
 274 bool RenderViewHostImpl::CreateRenderView(
 275     const base::string16& frame_name,
 276     int opener_route_id,
 277     int proxy_route_id,
 278     int32 max_page_id,
 279     bool window_was_created_with_opener) {
 280   TRACE_EVENT0("renderer_host,navigation",
 281                "RenderViewHostImpl::CreateRenderView");
 282   DCHECK(!IsRenderViewLive()) << "Creating view twice";
 283
 284   // The process may (if we're sharing a process with another host that already
 285   // initialized it) or may not (we have our own process or the old process
 286   // crashed) have been initialized. Calling Init multiple times will be
 287   // ignored, so this is safe.
 288   if (!GetProcess()->Init())
 289     return false;
 290   DCHECK(GetProcess()->HasConnection());
 291   DCHECK(GetProcess()->GetBrowserContext());
 292
 293   set_renderer_initialized(true);
 294
 295   GpuSurfaceTracker::Get()->SetSurfaceHandle(
 296       surface_id(), GetCompositingSurface());
 297
 298   // Ensure the RenderView starts with a next_page_id larger than any existing
 299   // page ID it might be asked to render.
 300   int32 next_page_id = 1;
 301   if (max_page_id > -1)
 302     next_page_id = max_page_id + 1;
 303
 304   ViewMsg_New_Params params;
 305   params.renderer_preferences =
 306       delegate_->GetRendererPrefs(GetProcess()->GetBrowserContext());
 307 #if defined(OS_WIN)
 308   GetWindowsSpecificPrefs(&params.renderer_preferences);
 309 #endif
 310   params.web_preferences = GetWebkitPreferences();
 311   params.view_id = GetRoutingID();
 312   params.main_frame_routing_id = main_frame_routing_id_;
 313   params.surface_id = surface_id();
 314   params.session_storage_namespace_id =
 315       delegate_->GetSessionStorageNamespace(instance_.get())->id();
 316   params.frame_name = frame_name;
 317   // Ensure the RenderView sets its opener correctly.
 318   params.opener_route_id = opener_route_id;
 319   params.swapped_out = !is_active_;
 320   params.proxy_routing_id = proxy_route_id;
 321   params.hidden = is_hidden();
 322   params.never_visible = delegate_->IsNeverVisible();
 323   params.window_was_created_with_opener = window_was_created_with_opener;
 324   params.next_page_id = next_page_id;
 325   params.enable_auto_resize = auto_resize_enabled();
 326   params.min_size = min_size_for_auto_resize();
 327   params.max_size = max_size_for_auto_resize();
 328   GetResizeParams(&params.initial_size);
 329   if (!is_active_) {
 330     params.replicated_frame_state =
 331         static_cast<RenderFrameHostImpl*>(GetMainFrame())->frame_tree_node()
 332             ->current_replication_state();
 333   }
 334
 335   if (!Send(new ViewMsg_New(params)))
 336     return false;
 337   SetInitialRenderSizeParams(params.initial_size);
 338
 339   // If it's enabled, tell the renderer to set up the Javascript bindings for
 340   // sending messages back to the browser.
 341   if (GetProcess()->IsIsolatedGuest())
 342     DCHECK_EQ(0, enabled_bindings_);
 343   Send(new ViewMsg_AllowBindings(GetRoutingID(), enabled_bindings_));
 344   // Let our delegate know that we created a RenderView.
 345   delegate_->RenderViewCreated(this);
 346
 347   // Since this method creates the main RenderFrame in the renderer process,
 348   // set the proper state on its corresponding RenderFrameHost.
 349   RenderFrameHostImpl::FromID(GetProcess()->GetID(), main_frame_routing_id_)
 350       ->SetRenderFrameCreated(true);
 351
 352   return true;
 353 }
 354
 355 bool RenderViewHostImpl::IsRenderViewLive() const {
 356   return GetProcess()->HasConnection() && renderer_initialized();
 357 }
 358
 359 void RenderViewHostImpl::SyncRendererPrefs() {
 360   RendererPreferences renderer_preferences =
 361       delegate_->GetRendererPrefs(GetProcess()->GetBrowserContext());
 362 #if defined(OS_WIN)
 363   GetWindowsSpecificPrefs(&renderer_preferences);
 364 #endif
 365   Send(new ViewMsg_SetRendererPrefs(GetRoutingID(), renderer_preferences));
 366 }
 367
 368 WebPreferences RenderViewHostImpl::ComputeWebkitPrefs() {
 369   TRACE_EVENT0("browser", "RenderViewHostImpl::GetWebkitPrefs");
 370   WebPreferences prefs;
 371
 372   const base::CommandLine& command_line =
 373       *base::CommandLine::ForCurrentProcess();
 374
 375   prefs.web_security_enabled =
 376       !command_line.HasSwitch(switches::kDisableWebSecurity);
 377   prefs.java_enabled =
 378       !command_line.HasSwitch(switches::kDisableJava);
 379
 380   prefs.remote_fonts_enabled =
 381       !command_line.HasSwitch(switches::kDisableRemoteFonts);
 382   prefs.application_cache_enabled = true;
 383   prefs.xss_auditor_enabled =
 384       !command_line.HasSwitch(switches::kDisableXSSAuditor);
 385   prefs.local_storage_enabled =
 386       !command_line.HasSwitch(switches::kDisableLocalStorage);
 387   prefs.databases_enabled =
 388       !command_line.HasSwitch(switches::kDisableDatabases);
 389 #if defined(OS_ANDROID)
 390   // WebAudio is enabled by default on x86 and ARM.
 391   prefs.webaudio_enabled =
 392       !command_line.HasSwitch(switches::kDisableWebAudio);
 393 #endif
 394
 395   prefs.experimental_webgl_enabled =
 396       GpuProcessHost::gpu_enabled() &&
 397       !command_line.HasSwitch(switches::kDisable3DAPIs) &&
 398       !command_line.HasSwitch(switches::kDisableExperimentalWebGL);
 399
 400   prefs.pepper_3d_enabled =
 401       !command_line.HasSwitch(switches::kDisablePepper3d);
 402
 403   prefs.flash_3d_enabled =
 404       GpuProcessHost::gpu_enabled() &&
 405       !command_line.HasSwitch(switches::kDisableFlash3d);
 406   prefs.flash_stage3d_enabled =
 407       GpuProcessHost::gpu_enabled() &&
 408       !command_line.HasSwitch(switches::kDisableFlashStage3d);
 409   prefs.flash_stage3d_baseline_enabled =
 410       GpuProcessHost::gpu_enabled() &&
 411       !command_line.HasSwitch(switches::kDisableFlashStage3d);
 412
 413   prefs.allow_file_access_from_file_urls =
 414       command_line.HasSwitch(switches::kAllowFileAccessFromFiles);
 415
 416   prefs.accelerated_2d_canvas_enabled =
 417       GpuProcessHost::gpu_enabled() &&
 418       !command_line.HasSwitch(switches::kDisableAccelerated2dCanvas);
 419   prefs.antialiased_2d_canvas_disabled =
 420       command_line.HasSwitch(switches::kDisable2dCanvasAntialiasing);
 421   prefs.antialiased_clips_2d_canvas_enabled =
 422       command_line.HasSwitch(switches::kEnable2dCanvasClipAntialiasing);
 423   prefs.accelerated_2d_canvas_msaa_sample_count =
 424       atoi(command_line.GetSwitchValueASCII(
 425       switches::kAcceleratedCanvas2dMSAASampleCount).c_str());
 426   // Text blobs rely on impl-side painting for proper LCD handling.
 427   prefs.text_blobs_enabled = command_line.HasSwitch(switches::kForceTextBlobs)
 428       || (content::IsImplSidePaintingEnabled() &&
 429           !command_line.HasSwitch(switches::kDisableTextBlobs));
 430   prefs.region_based_columns_enabled =
 431       command_line.HasSwitch(switches::kEnableRegionBasedColumns);
 432
 433   if (IsPinchVirtualViewportEnabled()) {
 434     prefs.pinch_virtual_viewport_enabled = true;
 435     prefs.pinch_overlay_scrollbar_thickness = 10;
 436   }
 437   prefs.use_solid_color_scrollbars = ui::IsOverlayScrollbarEnabled();
 438
 439 #if defined(OS_ANDROID)
 440   // On Android, user gestures are normally required, unless that requirement
 441   // is disabled with a command-line switch or the equivalent field trial is
 442   // is set to "Enabled".
 443   const std::string autoplay_group_name = base::FieldTrialList::FindFullName(
 444       "MediaElementAutoplay");
 445   prefs.user_gesture_required_for_media_playback = !command_line.HasSwitch(
 446       switches::kDisableGestureRequirementForMediaPlayback) &&
 447           (autoplay_group_name.empty() || autoplay_group_name != "Enabled");
 448 #endif
 449
 450   prefs.touch_enabled = ui::AreTouchEventsEnabled();
 451   prefs.device_supports_touch = prefs.touch_enabled &&
 452       ui::IsTouchDevicePresent();
 453   prefs.available_pointer_types = ui::GetAvailablePointerTypes();
 454   prefs.primary_pointer_type = ui::GetPrimaryPointerType();
 455   prefs.available_hover_types = ui::GetAvailableHoverTypes();
 456   prefs.primary_hover_type = ui::GetPrimaryHoverType();
 457
 458 #if defined(OS_ANDROID)
 459   prefs.device_supports_mouse = false;
 460 #endif
 461
 462   prefs.pointer_events_max_touch_points = ui::MaxTouchPoints();
 463
 464   prefs.touch_adjustment_enabled =
 465       !command_line.HasSwitch(switches::kDisableTouchAdjustment);
 466
 467   prefs.slimming_paint_enabled =
 468       command_line.HasSwitch(switches::kEnableSlimmingPaint);
 469
 470 #if defined(OS_MACOSX) || defined(OS_CHROMEOS)
 471   bool default_enable_scroll_animator = true;
 472 #else
 473   bool default_enable_scroll_animator = false;
 474 #endif
 475   prefs.enable_scroll_animator = default_enable_scroll_animator;
 476   if (command_line.HasSwitch(switches::kEnableSmoothScrolling))
 477     prefs.enable_scroll_animator = true;
 478   if (command_line.HasSwitch(switches::kDisableSmoothScrolling))
 479     prefs.enable_scroll_animator = false;
 480
 481   // Certain GPU features might have been blacklisted.
 482   GpuDataManagerImpl::GetInstance()->UpdateRendererWebPrefs(&prefs);
 483
 484   if (ChildProcessSecurityPolicyImpl::GetInstance()->HasWebUIBindings(
 485           GetProcess()->GetID())) {
 486     prefs.loads_images_automatically = true;
 487     prefs.javascript_enabled = true;
 488   }
 489
 490   prefs.connection_type = net::NetworkChangeNotifier::GetConnectionType();
 491   prefs.is_online =
 492       prefs.connection_type != net::NetworkChangeNotifier::CONNECTION_NONE;
 493
 494   prefs.number_of_cpu_cores = base::SysInfo::NumberOfProcessors();
 495
 496   prefs.viewport_meta_enabled =
 497       command_line.HasSwitch(switches::kEnableViewportMeta);
 498
 499   prefs.viewport_enabled =
 500       command_line.HasSwitch(switches::kEnableViewport) ||
 501       prefs.viewport_meta_enabled;
 502
 503   prefs.main_frame_resizes_are_orientation_changes =
 504       command_line.HasSwitch(switches::kMainFrameResizesAreOrientationChanges);
 505
 506   prefs.deferred_image_decoding_enabled =
 507       command_line.HasSwitch(switches::kEnableDeferredImageDecoding) ||
 508       content::IsImplSidePaintingEnabled();
 509
 510   prefs.image_color_profiles_enabled =
 511       command_line.HasSwitch(switches::kEnableImageColorProfiles);
 512
 513   prefs.spatial_navigation_enabled = command_line.HasSwitch(
 514       switches::kEnableSpatialNavigation);
 515
 516   prefs.disable_reading_from_canvas = command_line.HasSwitch(
 517       switches::kDisableReadingFromCanvas);
 518
 519   prefs.strict_mixed_content_checking = command_line.HasSwitch(
 520       switches::kEnableStrictMixedContentChecking);
 521
 522   prefs.strict_powerful_feature_restrictions = command_line.HasSwitch(
 523       switches::kEnableStrictPowerfulFeatureRestrictions);
 524
 525   prefs.v8_cache_options = GetV8CacheOptions();
 526
 527   GetContentClient()->browser()->OverrideWebkitPrefs(this, &prefs);
 528   return prefs;
 529 }
 530
 531 void RenderViewHostImpl::SuppressDialogsUntilSwapOut() {
 532   Send(new ViewMsg_SuppressDialogsUntilSwapOut(GetRoutingID()));
 533 }
 534
 535 void RenderViewHostImpl::ClosePage() {
 536   is_waiting_for_close_ack_ = true;
 537   StartHangMonitorTimeout(TimeDelta::FromMilliseconds(kUnloadTimeoutMS));
 538
 539   if (IsRenderViewLive()) {
 540     // Since we are sending an IPC message to the renderer, increase the event
 541     // count to prevent the hang monitor timeout from being stopped by input
 542     // event acknowledgements.
 543     increment_in_flight_event_count();
 544
 545     // TODO(creis): Should this be moved to Shutdown?  It may not be called for
 546     // RenderViewHosts that have been swapped out.
 547     NotificationService::current()->Notify(
 548         NOTIFICATION_RENDER_VIEW_HOST_WILL_CLOSE_RENDER_VIEW,
 549         Source<RenderViewHost>(this),
 550         NotificationService::NoDetails());
 551
 552     Send(new ViewMsg_ClosePage(GetRoutingID()));
 553   } else {
 554     // This RenderViewHost doesn't have a live renderer, so just skip the unload
 555     // event and close the page.
 556     ClosePageIgnoringUnloadEvents();
 557   }
 558 }
 559
 560 void RenderViewHostImpl::ClosePageIgnoringUnloadEvents() {
 561   StopHangMonitorTimeout();
 562   is_waiting_for_close_ack_ = false;
 563
 564   sudden_termination_allowed_ = true;
 565   delegate_->Close(this);
 566 }
 567
 568 #if defined(OS_ANDROID)
 569 void RenderViewHostImpl::ActivateNearestFindResult(int request_id,
 570                                                    float x,
 571                                                    float y) {
 572   Send(new InputMsg_ActivateNearestFindResult(GetRoutingID(),
 573                                               request_id, x, y));
 574 }
 575
 576 void RenderViewHostImpl::RequestFindMatchRects(int current_version) {
 577   Send(new ViewMsg_FindMatchRects(GetRoutingID(), current_version));
 578 }
 579 #endif
 580
 581 void RenderViewHostImpl::DragTargetDragEnter(
 582     const DropData& drop_data,
 583     const gfx::Point& client_pt,
 584     const gfx::Point& screen_pt,
 585     WebDragOperationsMask operations_allowed,
 586     int key_modifiers) {
 587   const int renderer_id = GetProcess()->GetID();
 588   ChildProcessSecurityPolicyImpl* policy =
 589       ChildProcessSecurityPolicyImpl::GetInstance();
 590
 591 #if defined(OS_CHROMEOS)
 592   // The externalfile:// scheme is used in Chrome OS to open external files in a
 593   // browser tab.
 594   if (drop_data.url.SchemeIs(content::kExternalFileScheme))
 595     policy->GrantRequestURL(renderer_id, drop_data.url);
 596 #endif
 597
 598   // The URL could have been cobbled together from any highlighted text string,
 599   // and can't be interpreted as a capability.
 600   DropData filtered_data(drop_data);
 601   GetProcess()->FilterURL(true, &filtered_data.url);
 602   if (drop_data.did_originate_from_renderer) {
 603     filtered_data.filenames.clear();
 604   }
 605
 606   // The filenames vector, on the other hand, does represent a capability to
 607   // access the given files.
 608   storage::IsolatedContext::FileInfoSet files;
 609   for (std::vector<ui::FileInfo>::iterator iter(
 610            filtered_data.filenames.begin());
 611        iter != filtered_data.filenames.end();
 612        ++iter) {
 613     // A dragged file may wind up as the value of an input element, or it
 614     // may be used as the target of a navigation instead.  We don't know
 615     // which will happen at this point, so generously grant both access
 616     // and request permissions to the specific file to cover both cases.
 617     // We do not give it the permission to request all file:// URLs.
 618
 619     // Make sure we have the same display_name as the one we register.
 620     if (iter->display_name.empty()) {
 621       std::string name;
 622       files.AddPath(iter->path, &name);
 623       iter->display_name = base::FilePath::FromUTF8Unsafe(name);
 624     } else {
 625       files.AddPathWithName(iter->path, iter->display_name.AsUTF8Unsafe());
 626     }
 627
 628     policy->GrantRequestSpecificFileURL(renderer_id,
 629                                         net::FilePathToFileURL(iter->path));
 630
 631     // If the renderer already has permission to read these paths, we don't need
 632     // to re-grant them. This prevents problems with DnD for files in the CrOS
 633     // file manager--the file manager already had read/write access to those
 634     // directories, but dragging a file would cause the read/write access to be
 635     // overwritten with read-only access, making them impossible to delete or
 636     // rename until the renderer was killed.
 637     if (!policy->CanReadFile(renderer_id, iter->path))
 638       policy->GrantReadFile(renderer_id, iter->path);
 639   }
 640
 641   storage::IsolatedContext* isolated_context =
 642       storage::IsolatedContext::GetInstance();
 643   DCHECK(isolated_context);
 644   std::string filesystem_id = isolated_context->RegisterDraggedFileSystem(
 645       files);
 646   if (!filesystem_id.empty()) {
 647     // Grant the permission iff the ID is valid.
 648     policy->GrantReadFileSystem(renderer_id, filesystem_id);
 649   }
 650   filtered_data.filesystem_id = base::UTF8ToUTF16(filesystem_id);
 651
 652   storage::FileSystemContext* file_system_context =
 653       BrowserContext::GetStoragePartition(GetProcess()->GetBrowserContext(),
 654                                           GetSiteInstance())
 655           ->GetFileSystemContext();
 656   for (size_t i = 0; i < filtered_data.file_system_files.size(); ++i) {
 657     storage::FileSystemURL file_system_url =
 658         file_system_context->CrackURL(filtered_data.file_system_files[i].url);
 659
 660     std::string register_name;
 661     std::string filesystem_id = isolated_context->RegisterFileSystemForPath(
 662         file_system_url.type(), file_system_url.filesystem_id(),
 663         file_system_url.path(), &register_name);
 664     policy->GrantReadFileSystem(renderer_id, filesystem_id);
 665
 666     // Note: We are using the origin URL provided by the sender here. It may be
 667     // different from the receiver's.
 668     filtered_data.file_system_files[i].url =
 669         GURL(storage::GetIsolatedFileSystemRootURIString(
 670                  file_system_url.origin(), filesystem_id, std::string())
 671                  .append(register_name));
 672   }
 673
 674   Send(new DragMsg_TargetDragEnter(GetRoutingID(), filtered_data, client_pt,
 675                                    screen_pt, operations_allowed,
 676                                    key_modifiers));
 677 }
 678
 679 void RenderViewHostImpl::DragTargetDragOver(
 680     const gfx::Point& client_pt,
 681     const gfx::Point& screen_pt,
 682     WebDragOperationsMask operations_allowed,
 683     int key_modifiers) {
 684   Send(new DragMsg_TargetDragOver(GetRoutingID(), client_pt, screen_pt,
 685                                   operations_allowed, key_modifiers));
 686 }
 687
 688 void RenderViewHostImpl::DragTargetDragLeave() {
 689   Send(new DragMsg_TargetDragLeave(GetRoutingID()));
 690 }
 691
 692 void RenderViewHostImpl::DragTargetDrop(
 693     const gfx::Point& client_pt,
 694     const gfx::Point& screen_pt,
 695     int key_modifiers) {
 696   Send(new DragMsg_TargetDrop(GetRoutingID(), client_pt, screen_pt,
 697                               key_modifiers));
 698 }
 699
 700 void RenderViewHostImpl::DragSourceEndedAt(
 701     int client_x, int client_y, int screen_x, int screen_y,
 702     WebDragOperation operation) {
 703   Send(new DragMsg_SourceEnded(GetRoutingID(),
 704                                gfx::Point(client_x, client_y),
 705                                gfx::Point(screen_x, screen_y),
 706                                operation));
 707 }
 708
 709 void RenderViewHostImpl::DragSourceSystemDragEnded() {
 710   Send(new DragMsg_SourceSystemDragEnded(GetRoutingID()));
 711 }
 712
 713 RenderFrameHost* RenderViewHostImpl::GetMainFrame() {
 714   return RenderFrameHost::FromID(GetProcess()->GetID(), main_frame_routing_id_);
 715 }
 716
 717 void RenderViewHostImpl::AllowBindings(int bindings_flags) {
 718   // Never grant any bindings to browser plugin guests.
 719   if (GetProcess()->IsIsolatedGuest()) {
 720     NOTREACHED() << "Never grant bindings to a guest process.";
 721     return;
 722   }
 723
 724   // Ensure we aren't granting WebUI bindings to a process that has already
 725   // been used for non-privileged views.
 726   if (bindings_flags & BINDINGS_POLICY_WEB_UI &&
 727       GetProcess()->HasConnection() &&
 728       !ChildProcessSecurityPolicyImpl::GetInstance()->HasWebUIBindings(
 729           GetProcess()->GetID())) {
 730     // This process has no bindings yet. Make sure it does not have more
 731     // than this single active view.
 732     // --single-process only has one renderer.
 733     if (GetProcess()->GetActiveViewCount() > 1 &&
 734         !base::CommandLine::ForCurrentProcess()->HasSwitch(
 735             switches::kSingleProcess))
 736       return;
 737   }
 738
 739   if (bindings_flags & BINDINGS_POLICY_WEB_UI) {
 740     ChildProcessSecurityPolicyImpl::GetInstance()->GrantWebUIBindings(
 741         GetProcess()->GetID());
 742   }
 743
 744   enabled_bindings_ |= bindings_flags;
 745   if (renderer_initialized())
 746     Send(new ViewMsg_AllowBindings(GetRoutingID(), enabled_bindings_));
 747 }
 748
 749 int RenderViewHostImpl::GetEnabledBindings() const {
 750   return enabled_bindings_;
 751 }
 752
 753 void RenderViewHostImpl::SetWebUIProperty(const std::string& name,
 754                                           const std::string& value) {
 755   // This is a sanity check before telling the renderer to enable the property.
 756   // It could lie and send the corresponding IPC messages anyway, but we will
 757   // not act on them if enabled_bindings_ doesn't agree. If we get here without
 758   // WebUI bindings, kill the renderer process.
 759   if (enabled_bindings_ & BINDINGS_POLICY_WEB_UI) {
 760     Send(new ViewMsg_SetWebUIProperty(GetRoutingID(), name, value));
 761   } else {
 762     RecordAction(
 763         base::UserMetricsAction("BindingsMismatchTerminate_RVH_WebUI"));
 764     GetProcess()->Shutdown(content::RESULT_CODE_KILLED, false);
 765   }
 766 }
 767
 768 void RenderViewHostImpl::GotFocus() {
 769   RenderWidgetHostImpl::GotFocus();  // Notifies the renderer it got focus.
 770
 771   RenderViewHostDelegateView* view = delegate_->GetDelegateView();
 772   if (view)
 773     view->GotFocus();
 774 }
 775
 776 void RenderViewHostImpl::LostCapture() {
 777   RenderWidgetHostImpl::LostCapture();
 778   delegate_->LostCapture();
 779 }
 780
 781 void RenderViewHostImpl::LostMouseLock() {
 782   RenderWidgetHostImpl::LostMouseLock();
 783   delegate_->LostMouseLock();
 784 }
 785
 786 void RenderViewHostImpl::SetInitialFocus(bool reverse) {
 787   Send(new ViewMsg_SetInitialFocus(GetRoutingID(), reverse));
 788 }
 789
 790 void RenderViewHostImpl::FilesSelectedInChooser(
 791     const std::vector<content::FileChooserFileInfo>& files,
 792     FileChooserParams::Mode permissions) {
 793   storage::FileSystemContext* const file_system_context =
 794       BrowserContext::GetStoragePartition(GetProcess()->GetBrowserContext(),
 795                                           GetSiteInstance())
 796           ->GetFileSystemContext();
 797   // Grant the security access requested to the given files.
 798   for (size_t i = 0; i < files.size(); ++i) {
 799     const content::FileChooserFileInfo& file = files[i];
 800     if (permissions == FileChooserParams::Save) {
 801       ChildProcessSecurityPolicyImpl::GetInstance()->GrantCreateReadWriteFile(
 802           GetProcess()->GetID(), file.file_path);
 803     } else {
 804       ChildProcessSecurityPolicyImpl::GetInstance()->GrantReadFile(
 805           GetProcess()->GetID(), file.file_path);
 806     }
 807     if (file.file_system_url.is_valid()) {
 808       ChildProcessSecurityPolicyImpl::GetInstance()->GrantReadFileSystem(
 809           GetProcess()->GetID(),
 810           file_system_context->CrackURL(file.file_system_url)
 811           .mount_filesystem_id());
 812     }
 813   }
 814   Send(new ViewMsg_RunFileChooserResponse(GetRoutingID(), files));
 815 }
 816
 817 void RenderViewHostImpl::DirectoryEnumerationFinished(
 818     int request_id,
 819     const std::vector<base::FilePath>& files) {
 820   // Grant the security access requested to the given files.
 821   for (std::vector<base::FilePath>::const_iterator file = files.begin();
 822        file != files.end(); ++file) {
 823     ChildProcessSecurityPolicyImpl::GetInstance()->GrantReadFile(
 824         GetProcess()->GetID(), *file);
 825   }
 826   Send(new ViewMsg_EnumerateDirectoryResponse(GetRoutingID(),
 827                                               request_id,
 828                                               files));
 829 }
 830
 831 void RenderViewHostImpl::SetIsLoading(bool is_loading) {
 832   if (ResourceDispatcherHostImpl::Get()) {
 833     BrowserThread::PostTask(
 834         BrowserThread::IO,
 835         FROM_HERE,
 836         base::Bind(&ResourceDispatcherHostImpl::OnRenderViewHostSetIsLoading,
 837                    base::Unretained(ResourceDispatcherHostImpl::Get()),
 838                    GetProcess()->GetID(),
 839                    GetRoutingID(),
 840                    is_loading));
 841   }
 842   RenderWidgetHostImpl::SetIsLoading(is_loading);
 843 }
 844
 845 void RenderViewHostImpl::LoadStateChanged(
 846     const GURL& url,
 847     const net::LoadStateWithParam& load_state,
 848     uint64 upload_position,
 849     uint64 upload_size) {
 850   delegate_->LoadStateChanged(url, load_state, upload_position, upload_size);
 851 }
 852
 853 bool RenderViewHostImpl::SuddenTerminationAllowed() const {
 854   return sudden_termination_allowed_ ||
 855       GetProcess()->SuddenTerminationAllowed();
 856 }
 857
 858 ///////////////////////////////////////////////////////////////////////////////
 859 // RenderViewHostImpl, IPC message handlers:
 860
 861 bool RenderViewHostImpl::OnMessageReceived(const IPC::Message& msg) {
 862   if (!BrowserMessageFilter::CheckCanDispatchOnUI(msg, this))
 863     return true;
 864
 865   // Filter out most IPC messages if this renderer is swapped out.
 866   // We still want to handle certain ACKs to keep our state consistent.
 867   if (is_swapped_out_) {
 868     if (!SwappedOutMessages::CanHandleWhileSwappedOut(msg)) {
 869       // If this is a synchronous message and we decided not to handle it,
 870       // we must send an error reply, or else the renderer will be stuck
 871       // and won't respond to future requests.
 872       if (msg.is_sync()) {
 873         IPC::Message* reply = IPC::SyncMessage::GenerateReply(&msg);
 874         reply->set_reply_error();
 875         Send(reply);
 876       }
 877       // Don't continue looking for someone to handle it.
 878       return true;
 879     }
 880   }
 881
 882   if (delegate_->OnMessageReceived(this, msg))
 883     return true;
 884
 885   bool handled = true;
 886   IPC_BEGIN_MESSAGE_MAP(RenderViewHostImpl, msg)
 887     IPC_MESSAGE_HANDLER(FrameHostMsg_RenderProcessGone, OnRenderProcessGone)
 888     IPC_MESSAGE_HANDLER(ViewHostMsg_ShowView, OnShowView)
 889     IPC_MESSAGE_HANDLER(ViewHostMsg_ShowWidget, OnShowWidget)
 890     IPC_MESSAGE_HANDLER(ViewHostMsg_ShowFullscreenWidget,
 891                         OnShowFullscreenWidget)
 892     IPC_MESSAGE_HANDLER(ViewHostMsg_RenderViewReady, OnRenderViewReady)
 893     IPC_MESSAGE_HANDLER(ViewHostMsg_UpdateState, OnUpdateState)
 894     IPC_MESSAGE_HANDLER(ViewHostMsg_UpdateTargetURL, OnUpdateTargetURL)
 895     IPC_MESSAGE_HANDLER(ViewHostMsg_Close, OnClose)
 896     IPC_MESSAGE_HANDLER(ViewHostMsg_RequestMove, OnRequestMove)
 897     IPC_MESSAGE_HANDLER(ViewHostMsg_DocumentAvailableInMainFrame,
 898                         OnDocumentAvailableInMainFrame)
 899     IPC_MESSAGE_HANDLER(ViewHostMsg_DidContentsPreferredSizeChange,
 900                         OnDidContentsPreferredSizeChange)
 901     IPC_MESSAGE_HANDLER(ViewHostMsg_RouteCloseEvent,
 902                         OnRouteCloseEvent)
 903     IPC_MESSAGE_HANDLER(DragHostMsg_StartDragging, OnStartDragging)
 904     IPC_MESSAGE_HANDLER(DragHostMsg_UpdateDragCursor, OnUpdateDragCursor)
 905     IPC_MESSAGE_HANDLER(DragHostMsg_TargetDrop_ACK, OnTargetDropACK)
 906     IPC_MESSAGE_HANDLER(ViewHostMsg_TakeFocus, OnTakeFocus)
 907     IPC_MESSAGE_HANDLER(ViewHostMsg_FocusedNodeChanged, OnFocusedNodeChanged)
 908     IPC_MESSAGE_HANDLER(ViewHostMsg_ClosePage_ACK, OnClosePageACK)
 909     IPC_MESSAGE_HANDLER(ViewHostMsg_DidZoomURL, OnDidZoomURL)
 910     IPC_MESSAGE_HANDLER(ViewHostMsg_PageScaleFactorIsOneChanged,
 911                         OnPageScaleFactorIsOneChanged)
 912     IPC_MESSAGE_HANDLER(ViewHostMsg_RunFileChooser, OnRunFileChooser)
 913     IPC_MESSAGE_HANDLER(ViewHostMsg_FocusedNodeTouched, OnFocusedNodeTouched)
 914     // Have the super handle all other messages.
 915     IPC_MESSAGE_UNHANDLED(
 916         handled = RenderWidgetHostImpl::OnMessageReceived(msg))
 917   IPC_END_MESSAGE_MAP()
 918
 919   return handled;
 920 }
 921
 922 void RenderViewHostImpl::Init() {
 923   RenderWidgetHostImpl::Init();
 924 }
 925
 926 void RenderViewHostImpl::Shutdown() {
 927   // We can't release the SessionStorageNamespace until our peer
 928   // in the renderer has wound down.
 929   if (GetProcess()->HasConnection()) {
 930     RenderProcessHostImpl::ReleaseOnCloseACK(
 931         GetProcess(),
 932         delegate_->GetSessionStorageNamespaceMap(),
 933         GetRoutingID());
 934   }
 935
 936   RenderWidgetHostImpl::Shutdown();
 937 }
 938
 939 void RenderViewHostImpl::WasHidden() {
 940   if (ResourceDispatcherHostImpl::Get()) {
 941     BrowserThread::PostTask(
 942         BrowserThread::IO, FROM_HERE,
 943         base::Bind(&ResourceDispatcherHostImpl::OnRenderViewHostWasHidden,
 944                    base::Unretained(ResourceDispatcherHostImpl::Get()),
 945                    GetProcess()->GetID(), GetRoutingID()));
 946   }
 947
 948   RenderWidgetHostImpl::WasHidden();
 949 }
 950
 951 void RenderViewHostImpl::WasShown(const ui::LatencyInfo& latency_info) {
 952   if (ResourceDispatcherHostImpl::Get()) {
 953     BrowserThread::PostTask(
 954         BrowserThread::IO, FROM_HERE,
 955         base::Bind(&ResourceDispatcherHostImpl::OnRenderViewHostWasShown,
 956                    base::Unretained(ResourceDispatcherHostImpl::Get()),
 957                    GetProcess()->GetID(), GetRoutingID()));
 958   }
 959
 960   RenderWidgetHostImpl::WasShown(latency_info);
 961 }
 962
 963 bool RenderViewHostImpl::IsRenderView() const {
 964   return true;
 965 }
 966
 967 void RenderViewHostImpl::CreateNewWindow(
 968     int route_id,
 969     int main_frame_route_id,
 970     const ViewHostMsg_CreateWindow_Params& params,
 971     SessionStorageNamespace* session_storage_namespace) {
 972   ViewHostMsg_CreateWindow_Params validated_params(params);
 973   GetProcess()->FilterURL(false, &validated_params.target_url);
 974   GetProcess()->FilterURL(false, &validated_params.opener_url);
 975   GetProcess()->FilterURL(true, &validated_params.opener_security_origin);
 976
 977   delegate_->CreateNewWindow(
 978       GetProcess()->GetID(), route_id, main_frame_route_id, validated_params,
 979       session_storage_namespace);
 980 }
 981
 982 void RenderViewHostImpl::CreateNewWidget(int route_id,
 983                                      blink::WebPopupType popup_type) {
 984   delegate_->CreateNewWidget(GetProcess()->GetID(), route_id, popup_type);
 985 }
 986
 987 void RenderViewHostImpl::CreateNewFullscreenWidget(int route_id) {
 988   delegate_->CreateNewFullscreenWidget(GetProcess()->GetID(), route_id);
 989 }
 990
 991 void RenderViewHostImpl::OnShowView(int route_id,
 992                                     WindowOpenDisposition disposition,
 993                                     const gfx::Rect& initial_rect,
 994                                     bool user_gesture) {
 995   if (is_active_) {
 996     delegate_->ShowCreatedWindow(
 997         route_id, disposition, initial_rect, user_gesture);
 998   }
 999   Send(new ViewMsg_Move_ACK(route_id));
1000 }
1001
1002 void RenderViewHostImpl::OnShowWidget(int route_id,
1003                                       const gfx::Rect& initial_rect) {
1004   if (is_active_)
1005     delegate_->ShowCreatedWidget(route_id, initial_rect);
1006   Send(new ViewMsg_Move_ACK(route_id));
1007 }
1008
1009 void RenderViewHostImpl::OnShowFullscreenWidget(int route_id) {
1010   if (is_active_)
1011     delegate_->ShowCreatedFullscreenWidget(route_id);
1012   Send(new ViewMsg_Move_ACK(route_id));
1013 }
1014
1015 void RenderViewHostImpl::OnRenderViewReady() {
1016   render_view_termination_status_ = base::TERMINATION_STATUS_STILL_RUNNING;
1017   SendScreenRects();
1018   WasResized();
1019   delegate_->RenderViewReady(this);
1020 }
1021
1022 void RenderViewHostImpl::OnRenderProcessGone(int status, int exit_code) {
1023   // Do nothing, otherwise RenderWidgetHostImpl will assume it is not a
1024   // RenderViewHostImpl and destroy itself.
1025   // TODO(nasko): Remove this hack once RenderViewHost and RenderWidgetHost are
1026   // decoupled.
1027 }
1028
1029 void RenderViewHostImpl::OnUpdateState(int32 page_id, const PageState& state) {
1030   // If the following DCHECK fails, you have encountered a tricky edge-case that
1031   // has evaded reproduction for a very long time. Please report what you were
1032   // doing on http://crbug.com/407376, whether or not you can reproduce the
1033   // failure.
1034   DCHECK_EQ(page_id, page_id_);
1035
1036   // Without this check, the renderer can trick the browser into using
1037   // filenames it can't access in a future session restore.
1038   if (!CanAccessFilesOfPageState(state)) {
1039     bad_message::ReceivedBadMessage(
1040         GetProcess(), bad_message::RVH_CAN_ACCESS_FILES_OF_PAGE_STATE);
1041     return;
1042   }
1043
1044   delegate_->UpdateState(this, page_id, state);
1045 }
1046
1047 void RenderViewHostImpl::OnUpdateTargetURL(const GURL& url) {
1048   if (is_active_)
1049     delegate_->UpdateTargetURL(this, url);
1050
1051   // Send a notification back to the renderer that we are ready to
1052   // receive more target urls.
1053   Send(new ViewMsg_UpdateTargetURL_ACK(GetRoutingID()));
1054 }
1055
1056 void RenderViewHostImpl::OnClose() {
1057   // If the renderer is telling us to close, it has already run the unload
1058   // events, and we can take the fast path.
1059   ClosePageIgnoringUnloadEvents();
1060 }
1061
1062 void RenderViewHostImpl::OnRequestMove(const gfx::Rect& pos) {
1063   if (is_active_)
1064     delegate_->RequestMove(pos);
1065   Send(new ViewMsg_Move_ACK(GetRoutingID()));
1066 }
1067
1068 void RenderViewHostImpl::OnDocumentAvailableInMainFrame(
1069     bool uses_temporary_zoom_level) {
1070   delegate_->DocumentAvailableInMainFrame(this);
1071
1072   if (!uses_temporary_zoom_level)
1073     return;
1074
1075   HostZoomMapImpl* host_zoom_map =
1076       static_cast<HostZoomMapImpl*>(HostZoomMap::Get(GetSiteInstance()));
1077   host_zoom_map->SetTemporaryZoomLevel(GetProcess()->GetID(),
1078                                        GetRoutingID(),
1079                                        host_zoom_map->GetDefaultZoomLevel());
1080 }
1081
1082 void RenderViewHostImpl::OnDidContentsPreferredSizeChange(
1083     const gfx::Size& new_size) {
1084   delegate_->UpdatePreferredSize(new_size);
1085 }
1086
1087 void RenderViewHostImpl::OnRenderAutoResized(const gfx::Size& new_size) {
1088   delegate_->ResizeDueToAutoResize(new_size);
1089 }
1090
1091 void RenderViewHostImpl::OnRouteCloseEvent() {
1092   // Have the delegate route this to the active RenderViewHost.
1093   delegate_->RouteCloseEvent(this);
1094 }
1095
1096 void RenderViewHostImpl::OnStartDragging(
1097     const DropData& drop_data,
1098     WebDragOperationsMask drag_operations_mask,
1099     const SkBitmap& bitmap,
1100     const gfx::Vector2d& bitmap_offset_in_dip,
1101     const DragEventSourceInfo& event_info) {
1102   RenderViewHostDelegateView* view = delegate_->GetDelegateView();
1103   if (!view)
1104     return;
1105
1106   DropData filtered_data(drop_data);
1107   RenderProcessHost* process = GetProcess();
1108   ChildProcessSecurityPolicyImpl* policy =
1109       ChildProcessSecurityPolicyImpl::GetInstance();
1110
1111   // Allow drag of Javascript URLs to enable bookmarklet drag to bookmark bar.
1112   if (!filtered_data.url.SchemeIs(url::kJavaScriptScheme))
1113     process->FilterURL(true, &filtered_data.url);
1114   process->FilterURL(false, &filtered_data.html_base_url);
1115   // Filter out any paths that the renderer didn't have access to. This prevents
1116   // the following attack on a malicious renderer:
1117   // 1. StartDragging IPC sent with renderer-specified filesystem paths that it
1118   //    doesn't have read permissions for.
1119   // 2. We initiate a native DnD operation.
1120   // 3. DnD operation immediately ends since mouse is not held down. DnD events
1121   //    still fire though, which causes read permissions to be granted to the
1122   //    renderer for any file paths in the drop.
1123   filtered_data.filenames.clear();
1124   for (std::vector<ui::FileInfo>::const_iterator it =
1125            drop_data.filenames.begin();
1126        it != drop_data.filenames.end();
1127        ++it) {
1128     if (policy->CanReadFile(GetProcess()->GetID(), it->path))
1129       filtered_data.filenames.push_back(*it);
1130   }
1131
1132   storage::FileSystemContext* file_system_context =
1133       BrowserContext::GetStoragePartition(GetProcess()->GetBrowserContext(),
1134                                           GetSiteInstance())
1135           ->GetFileSystemContext();
1136   filtered_data.file_system_files.clear();
1137   for (size_t i = 0; i < drop_data.file_system_files.size(); ++i) {
1138     storage::FileSystemURL file_system_url =
1139         file_system_context->CrackURL(drop_data.file_system_files[i].url);
1140     if (policy->CanReadFileSystemFile(GetProcess()->GetID(), file_system_url))
1141       filtered_data.file_system_files.push_back(drop_data.file_system_files[i]);
1142   }
1143
1144   float scale = GetScaleFactorForView(GetView());
1145   gfx::ImageSkia image(gfx::ImageSkiaRep(bitmap, scale));
1146   view->StartDragging(filtered_data, drag_operations_mask, image,
1147       bitmap_offset_in_dip, event_info);
1148 }
1149
1150 void RenderViewHostImpl::OnUpdateDragCursor(WebDragOperation current_op) {
1151   RenderViewHostDelegateView* view = delegate_->GetDelegateView();
1152   if (view)
1153     view->UpdateDragCursor(current_op);
1154 }
1155
1156 void RenderViewHostImpl::OnTargetDropACK() {
1157   NotificationService::current()->Notify(
1158       NOTIFICATION_RENDER_VIEW_HOST_DID_RECEIVE_DRAG_TARGET_DROP_ACK,
1159       Source<RenderViewHost>(this),
1160       NotificationService::NoDetails());
1161 }
1162
1163 void RenderViewHostImpl::OnTakeFocus(bool reverse) {
1164   RenderViewHostDelegateView* view = delegate_->GetDelegateView();
1165   if (view)
1166     view->TakeFocus(reverse);
1167 }
1168
1169 void RenderViewHostImpl::OnFocusedNodeChanged(
1170     bool is_editable_node,
1171     const gfx::Rect& node_bounds_in_viewport) {
1172   is_focused_element_editable_ = is_editable_node;
1173   if (view_)
1174     view_->FocusedNodeChanged(is_editable_node);
1175 #if defined(OS_WIN)
1176   if (!is_editable_node && virtual_keyboard_requested_) {
1177     virtual_keyboard_requested_ = false;
1178     delegate_->SetIsVirtualKeyboardRequested(false);
1179     BrowserThread::PostDelayedTask(
1180         BrowserThread::UI, FROM_HERE,
1181         base::Bind(base::IgnoreResult(&DismissVirtualKeyboardTask)),
1182         TimeDelta::FromMilliseconds(kVirtualKeyboardDisplayWaitTimeoutMs));
1183   }
1184 #endif
1185
1186   // Convert node_bounds to screen coordinates.
1187   gfx::Rect view_bounds_in_screen = view_->GetViewBounds();
1188   gfx::Point origin = node_bounds_in_viewport.origin();
1189   origin.Offset(view_bounds_in_screen.x(), view_bounds_in_screen.y());
1190   gfx::Rect node_bounds_in_screen(origin.x(), origin.y(),
1191                                   node_bounds_in_viewport.width(),
1192                                   node_bounds_in_viewport.height());
1193   FocusedNodeDetails details = {is_editable_node, node_bounds_in_screen};
1194   NotificationService::current()->Notify(NOTIFICATION_FOCUS_CHANGED_IN_PAGE,
1195                                          Source<RenderViewHost>(this),
1196                                          Details<FocusedNodeDetails>(&details));
1197 }
1198
1199 void RenderViewHostImpl::OnUserGesture() {
1200   delegate_->OnUserGesture();
1201 }
1202
1203 void RenderViewHostImpl::OnClosePageACK() {
1204   decrement_in_flight_event_count();
1205   ClosePageIgnoringUnloadEvents();
1206 }
1207
1208 void RenderViewHostImpl::NotifyRendererUnresponsive() {
1209   delegate_->RendererUnresponsive(this);
1210 }
1211
1212 void RenderViewHostImpl::NotifyRendererResponsive() {
1213   delegate_->RendererResponsive(this);
1214 }
1215
1216 void RenderViewHostImpl::RequestToLockMouse(bool user_gesture,
1217                                             bool last_unlocked_by_target) {
1218   delegate_->RequestToLockMouse(user_gesture, last_unlocked_by_target);
1219 }
1220
1221 bool RenderViewHostImpl::IsFullscreenGranted() const {
1222   return delegate_->IsFullscreenForCurrentTab();
1223 }
1224
1225 blink::WebDisplayMode RenderViewHostImpl::GetDisplayMode() const {
1226   return delegate_->GetDisplayMode();
1227 }
1228
1229 void RenderViewHostImpl::OnFocus() {
1230   // Note: We allow focus and blur from swapped out RenderViewHosts, even when
1231   // the active RenderViewHost is in a different BrowsingInstance (e.g., WebUI).
1232   delegate_->Activate();
1233 }
1234
1235 void RenderViewHostImpl::OnBlur() {
1236   delegate_->Deactivate();
1237 }
1238
1239 gfx::Rect RenderViewHostImpl::GetRootWindowResizerRect() const {
1240   return delegate_->GetRootWindowResizerRect();
1241 }
1242
1243 void RenderViewHostImpl::ForwardMouseEvent(
1244     const blink::WebMouseEvent& mouse_event) {
1245   RenderWidgetHostImpl::ForwardMouseEvent(mouse_event);
1246   if (mouse_event.type == WebInputEvent::MouseWheel && ignore_input_events())
1247     delegate_->OnIgnoredUIEvent();
1248 }
1249
1250 void RenderViewHostImpl::ForwardKeyboardEvent(
1251     const NativeWebKeyboardEvent& key_event) {
1252   if (ignore_input_events()) {
1253     if (key_event.type == WebInputEvent::RawKeyDown)
1254       delegate_->OnIgnoredUIEvent();
1255     return;
1256   }
1257   RenderWidgetHostImpl::ForwardKeyboardEvent(key_event);
1258 }
1259
1260 void RenderViewHostImpl::OnTextSurroundingSelectionResponse(
1261     const base::string16& content,
1262     size_t start_offset,
1263     size_t end_offset) {
1264   if (!view_)
1265     return;
1266   view_->OnTextSurroundingSelectionResponse(content, start_offset, end_offset);
1267 }
1268
1269 WebPreferences RenderViewHostImpl::GetWebkitPreferences() {
1270   if (!web_preferences_.get()) {
1271     OnWebkitPreferencesChanged();
1272   }
1273   return *web_preferences_;
1274 }
1275
1276 void RenderViewHostImpl::UpdateWebkitPreferences(const WebPreferences& prefs) {
1277   web_preferences_.reset(new WebPreferences(prefs));
1278   Send(new ViewMsg_UpdateWebPreferences(GetRoutingID(), prefs));
1279 }
1280
1281 void RenderViewHostImpl::OnWebkitPreferencesChanged() {
1282   // This is defensive code to avoid infinite loops due to code run inside
1283   // UpdateWebkitPreferences() accidentally updating more preferences and thus
1284   // calling back into this code. See crbug.com/398751 for one past example.
1285   if (updating_web_preferences_)
1286     return;
1287   updating_web_preferences_ = true;
1288   UpdateWebkitPreferences(ComputeWebkitPrefs());
1289   updating_web_preferences_ = false;
1290 }
1291
1292 void RenderViewHostImpl::ClearFocusedElement() {
1293   is_focused_element_editable_ = false;
1294   Send(new ViewMsg_ClearFocusedElement(GetRoutingID()));
1295 }
1296
1297 bool RenderViewHostImpl::IsFocusedElementEditable() {
1298   return is_focused_element_editable_;
1299 }
1300
1301 void RenderViewHostImpl::Zoom(PageZoom zoom) {
1302   Send(new ViewMsg_Zoom(GetRoutingID(), zoom));
1303 }
1304
1305 void RenderViewHostImpl::DisableScrollbarsForThreshold(const gfx::Size& size) {
1306   Send(new ViewMsg_DisableScrollbarsForSmallWindows(GetRoutingID(), size));
1307 }
1308
1309 void RenderViewHostImpl::EnablePreferredSizeMode() {
1310   Send(new ViewMsg_EnablePreferredSizeChangedMode(GetRoutingID()));
1311 }
1312
1313 void RenderViewHostImpl::EnableAutoResize(const gfx::Size& min_size,
1314                                           const gfx::Size& max_size) {
1315   SetAutoResize(true, min_size, max_size);
1316   Send(new ViewMsg_EnableAutoResize(GetRoutingID(), min_size, max_size));
1317 }
1318
1319 void RenderViewHostImpl::DisableAutoResize(const gfx::Size& new_size) {
1320   SetAutoResize(false, gfx::Size(), gfx::Size());
1321   Send(new ViewMsg_DisableAutoResize(GetRoutingID(), new_size));
1322   if (!new_size.IsEmpty())
1323     GetView()->SetSize(new_size);
1324 }
1325
1326 void RenderViewHostImpl::CopyImageAt(int x, int y) {
1327   Send(new ViewMsg_CopyImageAt(GetRoutingID(), x, y));
1328 }
1329
1330 void RenderViewHostImpl::SaveImageAt(int x, int y) {
1331   Send(new ViewMsg_SaveImageAt(GetRoutingID(), x, y));
1332 }
1333
1334 void RenderViewHostImpl::ExecuteMediaPlayerActionAtLocation(
1335   const gfx::Point& location, const blink::WebMediaPlayerAction& action) {
1336   Send(new ViewMsg_MediaPlayerActionAt(GetRoutingID(), location, action));
1337 }
1338
1339 void RenderViewHostImpl::ExecutePluginActionAtLocation(
1340   const gfx::Point& location, const blink::WebPluginAction& action) {
1341   Send(new ViewMsg_PluginActionAt(GetRoutingID(), location, action));
1342 }
1343
1344 void RenderViewHostImpl::NotifyMoveOrResizeStarted() {
1345   Send(new ViewMsg_MoveOrResizeStarted(GetRoutingID()));
1346 }
1347
1348 void RenderViewHostImpl::OnDidZoomURL(double zoom_level,
1349                                       const GURL& url) {
1350   HostZoomMapImpl* host_zoom_map =
1351       static_cast<HostZoomMapImpl*>(HostZoomMap::Get(GetSiteInstance()));
1352
1353   host_zoom_map->SetZoomLevelForView(GetProcess()->GetID(),
1354                                      GetRoutingID(),
1355                                      zoom_level,
1356                                      net::GetHostOrSpecFromURL(url));
1357 }
1358
1359 void RenderViewHostImpl::OnPageScaleFactorIsOneChanged(bool is_one) {
1360   if (!GetSiteInstance())
1361     return;
1362   HostZoomMapImpl* host_zoom_map =
1363       static_cast<HostZoomMapImpl*>(HostZoomMap::Get(GetSiteInstance()));
1364   if (!host_zoom_map)
1365     return;
1366   if (!GetProcess())
1367     return;
1368   host_zoom_map->SetPageScaleFactorIsOneForView(GetProcess()->GetID(),
1369                                                 GetRoutingID(), is_one);
1370 }
1371
1372 void RenderViewHostImpl::OnRunFileChooser(const FileChooserParams& params) {
1373   // Do not allow messages with absolute paths in them as this can permit a
1374   // renderer to coerce the browser to perform I/O on a renderer controlled
1375   // path.
1376   if (params.default_file_name != params.default_file_name.BaseName()) {
1377     bad_message::ReceivedBadMessage(GetProcess(),
1378                                     bad_message::RVH_FILE_CHOOSER_PATH);
1379     return;
1380   }
1381
1382   delegate_->RunFileChooser(this, params);
1383 }
1384
1385 void RenderViewHostImpl::OnFocusedNodeTouched(bool editable) {
1386 #if defined(OS_WIN)
1387   if (editable) {
1388     virtual_keyboard_requested_ = base::win::DisplayVirtualKeyboard();
1389     delegate_->SetIsVirtualKeyboardRequested(true);
1390   } else {
1391     virtual_keyboard_requested_ = false;
1392     delegate_->SetIsVirtualKeyboardRequested(false);
1393     base::win::DismissVirtualKeyboard();
1394   }
1395 #endif
1396 }
1397
1398 bool RenderViewHostImpl::CanAccessFilesOfPageState(
1399     const PageState& state) const {
1400   ChildProcessSecurityPolicyImpl* policy =
1401       ChildProcessSecurityPolicyImpl::GetInstance();
1402
1403   const std::vector<base::FilePath>& file_paths = state.GetReferencedFiles();
1404   for (const auto& file : file_paths) {
1405     if (!policy->CanReadFile(GetProcess()->GetID(), file))
1406       return false;
1407   }
1408   return true;
1409 }
1410
1411 void RenderViewHostImpl::GrantFileAccessFromPageState(const PageState& state) {
1412   ChildProcessSecurityPolicyImpl* policy =
1413       ChildProcessSecurityPolicyImpl::GetInstance();
1414
1415   const std::vector<base::FilePath>& file_paths = state.GetReferencedFiles();
1416   for (const auto& file : file_paths) {
1417     if (!policy->CanReadFile(GetProcess()->GetID(), file))
1418       policy->GrantReadFile(GetProcess()->GetID(), file);
1419   }
1420 }
1421
1422 void RenderViewHostImpl::AttachToFrameTree() {
1423   FrameTree* frame_tree = delegate_->GetFrameTree();
1424
1425   frame_tree->ResetForMainFrameSwap();
1426 }
1427
1428 void RenderViewHostImpl::SelectWordAroundCaret() {
1429   Send(new ViewMsg_SelectWordAroundCaret(GetRoutingID()));
1430 }
1431
1432 }  // namespace content