content/browser/gpu/gpu_data_manager_impl_private.cc

   1 // Copyright (c) 2013 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/gpu/gpu_data_manager_impl_private.h"
   6
   7 #include "base/bind.h"
   8 #include "base/bind_helpers.h"
   9 #include "base/command_line.h"
  10 #include "base/metrics/field_trial.h"
  11 #include "base/metrics/histogram.h"
  12 #include "base/metrics/sparse_histogram.h"
  13 #include "base/strings/string_number_conversions.h"
  14 #include "base/strings/stringprintf.h"
  15 #include "base/sys_info.h"
  16 #include "base/trace_event/trace_event.h"
  17 #include "base/version.h"
  18 #include "cc/base/switches.h"
  19 #include "content/browser/gpu/gpu_process_host.h"
  20 #include "content/common/gpu/gpu_messages.h"
  21 #include "content/public/browser/browser_thread.h"
  22 #include "content/public/browser/gpu_data_manager_observer.h"
  23 #include "content/public/common/content_client.h"
  24 #include "content/public/common/content_constants.h"
  25 #include "content/public/common/content_switches.h"
  26 #include "content/public/common/web_preferences.h"
  27 #include "gpu/command_buffer/service/gpu_switches.h"
  28 #include "gpu/config/gpu_control_list_jsons.h"
  29 #include "gpu/config/gpu_driver_bug_workaround_type.h"
  30 #include "gpu/config/gpu_feature_type.h"
  31 #include "gpu/config/gpu_info_collector.h"
  32 #include "gpu/config/gpu_switches.h"
  33 #include "gpu/config/gpu_util.h"
  34 #include "ui/base/ui_base_switches.h"
  35 #include "ui/gl/gl_implementation.h"
  36 #include "ui/gl/gl_switches.h"
  37 #include "ui/gl/gpu_switching_manager.h"
  38
  39 #if defined(OS_MACOSX)
  40 #include <ApplicationServices/ApplicationServices.h>
  41 #endif  // OS_MACOSX
  42 #if defined(OS_WIN)
  43 #include "base/win/windows_version.h"
  44 #endif  // OS_WIN
  45 #if defined(OS_ANDROID)
  46 #include "ui/gfx/android/device_display_info.h"
  47 #endif  // OS_ANDROID
  48
  49 namespace content {
  50
  51 namespace {
  52
  53 enum GpuFeatureStatus {
  54     kGpuFeatureEnabled = 0,
  55     kGpuFeatureBlacklisted = 1,
  56     kGpuFeatureDisabled = 2,  // disabled by user but not blacklisted
  57     kGpuFeatureNumStatus
  58 };
  59
  60 #if defined(OS_WIN)
  61
  62 enum WinSubVersion {
  63   kWinOthers = 0,
  64   kWinXP,
  65   kWinVista,
  66   kWin7,
  67   kWin8,
  68   kNumWinSubVersions
  69 };
  70
  71 int GetGpuBlacklistHistogramValueWin(GpuFeatureStatus status) {
  72   static WinSubVersion sub_version = kNumWinSubVersions;
  73   if (sub_version == kNumWinSubVersions) {
  74     sub_version = kWinOthers;
  75     std::string version_str = base::SysInfo::OperatingSystemVersion();
  76     size_t pos = version_str.find_first_not_of("0123456789.");
  77     if (pos != std::string::npos)
  78       version_str = version_str.substr(0, pos);
  79     Version os_version(version_str);
  80     if (os_version.IsValid() && os_version.components().size() >= 2) {
  81       const std::vector<uint32_t>& version_numbers = os_version.components();
  82       if (version_numbers[0] == 5)
  83         sub_version = kWinXP;
  84       else if (version_numbers[0] == 6 && version_numbers[1] == 0)
  85         sub_version = kWinVista;
  86       else if (version_numbers[0] == 6 && version_numbers[1] == 1)
  87         sub_version = kWin7;
  88       else if (version_numbers[0] == 6 && version_numbers[1] == 2)
  89         sub_version = kWin8;
  90     }
  91   }
  92   int entry_index = static_cast<int>(sub_version) * kGpuFeatureNumStatus;
  93   switch (status) {
  94     case kGpuFeatureEnabled:
  95       break;
  96     case kGpuFeatureBlacklisted:
  97       entry_index++;
  98       break;
  99     case kGpuFeatureDisabled:
 100       entry_index += 2;
 101       break;
 102     case kGpuFeatureNumStatus:
 103       NOTREACHED();
 104       break;
 105   }
 106   return entry_index;
 107 }
 108 #endif  // OS_WIN
 109
 110 // Send UMA histograms about the enabled features and GPU properties.
 111 void UpdateStats(const gpu::GPUInfo& gpu_info,
 112                  const gpu::GpuBlacklist* blacklist,
 113                  const std::set<int>& blacklisted_features) {
 114   uint32 max_entry_id = blacklist->max_entry_id();
 115   if (max_entry_id == 0) {
 116     // GPU Blacklist was not loaded.  No need to go further.
 117     return;
 118   }
 119
 120   const base::CommandLine& command_line =
 121       *base::CommandLine::ForCurrentProcess();
 122   bool disabled = false;
 123
 124   // Use entry 0 to capture the total number of times that data
 125   // was recorded in this histogram in order to have a convenient
 126   // denominator to compute blacklist percentages for the rest of the
 127   // entries.
 128   UMA_HISTOGRAM_ENUMERATION("GPU.BlacklistTestResultsPerEntry",
 129       0, max_entry_id + 1);
 130
 131   if (blacklisted_features.size() != 0) {
 132     std::vector<uint32> flag_entries;
 133     blacklist->GetDecisionEntries(&flag_entries, disabled);
 134     DCHECK_GT(flag_entries.size(), 0u);
 135     for (size_t i = 0; i < flag_entries.size(); ++i) {
 136       UMA_HISTOGRAM_ENUMERATION("GPU.BlacklistTestResultsPerEntry",
 137           flag_entries[i], max_entry_id + 1);
 138     }
 139   }
 140
 141   // This counts how many users are affected by a disabled entry - this allows
 142   // us to understand the impact of an entry before enable it.
 143   std::vector<uint32> flag_disabled_entries;
 144   disabled = true;
 145   blacklist->GetDecisionEntries(&flag_disabled_entries, disabled);
 146   for (uint32 disabled_entry : flag_disabled_entries) {
 147     UMA_HISTOGRAM_ENUMERATION("GPU.BlacklistTestResultsPerDisabledEntry",
 148         disabled_entry, max_entry_id + 1);
 149   }
 150
 151   const gpu::GpuFeatureType kGpuFeatures[] = {
 152       gpu::GPU_FEATURE_TYPE_ACCELERATED_2D_CANVAS,
 153       gpu::GPU_FEATURE_TYPE_GPU_COMPOSITING,
 154       gpu::GPU_FEATURE_TYPE_GPU_RASTERIZATION,
 155       gpu::GPU_FEATURE_TYPE_WEBGL};
 156   const std::string kGpuBlacklistFeatureHistogramNames[] = {
 157       "GPU.BlacklistFeatureTestResults.Accelerated2dCanvas",
 158       "GPU.BlacklistFeatureTestResults.GpuCompositing",
 159       "GPU.BlacklistFeatureTestResults.GpuRasterization",
 160       "GPU.BlacklistFeatureTestResults.Webgl"};
 161   const bool kGpuFeatureUserFlags[] = {
 162       command_line.HasSwitch(switches::kDisableAccelerated2dCanvas),
 163       command_line.HasSwitch(switches::kDisableGpu),
 164       command_line.HasSwitch(switches::kDisableGpuRasterization),
 165       command_line.HasSwitch(switches::kDisableExperimentalWebGL)};
 166 #if defined(OS_WIN)
 167   const std::string kGpuBlacklistFeatureHistogramNamesWin[] = {
 168       "GPU.BlacklistFeatureTestResultsWindows.Accelerated2dCanvas",
 169       "GPU.BlacklistFeatureTestResultsWindows.GpuCompositing",
 170       "GPU.BlacklistFeatureTestResultsWindows.GpuRasterization",
 171       "GPU.BlacklistFeatureTestResultsWindows.Webgl"};
 172 #endif
 173   const size_t kNumFeatures =
 174       sizeof(kGpuFeatures) / sizeof(gpu::GpuFeatureType);
 175   for (size_t i = 0; i < kNumFeatures; ++i) {
 176     // We can't use UMA_HISTOGRAM_ENUMERATION here because the same name is
 177     // expected if the macro is used within a loop.
 178     GpuFeatureStatus value = kGpuFeatureEnabled;
 179     if (blacklisted_features.count(kGpuFeatures[i]))
 180       value = kGpuFeatureBlacklisted;
 181     else if (kGpuFeatureUserFlags[i])
 182       value = kGpuFeatureDisabled;
 183     base::HistogramBase* histogram_pointer = base::LinearHistogram::FactoryGet(
 184         kGpuBlacklistFeatureHistogramNames[i],
 185         1, kGpuFeatureNumStatus, kGpuFeatureNumStatus + 1,
 186         base::HistogramBase::kUmaTargetedHistogramFlag);
 187     histogram_pointer->Add(value);
 188 #if defined(OS_WIN)
 189     histogram_pointer = base::LinearHistogram::FactoryGet(
 190         kGpuBlacklistFeatureHistogramNamesWin[i],
 191         1, kNumWinSubVersions * kGpuFeatureNumStatus,
 192         kNumWinSubVersions * kGpuFeatureNumStatus + 1,
 193         base::HistogramBase::kUmaTargetedHistogramFlag);
 194     histogram_pointer->Add(GetGpuBlacklistHistogramValueWin(value));
 195 #endif
 196   }
 197
 198   UMA_HISTOGRAM_SPARSE_SLOWLY("GPU.GLResetNotificationStrategy",
 199       gpu_info.gl_reset_notification_strategy);
 200 }
 201
 202 // Combine the integers into a string, seperated by ','.
 203 std::string IntSetToString(const std::set<int>& list) {
 204   std::string rt;
 205   for (std::set<int>::const_iterator it = list.begin();
 206        it != list.end(); ++it) {
 207     if (!rt.empty())
 208       rt += ",";
 209     rt += base::IntToString(*it);
 210   }
 211   return rt;
 212 }
 213
 214 #if defined(OS_MACOSX)
 215 void DisplayReconfigCallback(CGDirectDisplayID display,
 216                              CGDisplayChangeSummaryFlags flags,
 217                              void* gpu_data_manager) {
 218   if (flags == kCGDisplayBeginConfigurationFlag)
 219     return; // This call contains no information about the display change
 220
 221   GpuDataManagerImpl* manager =
 222       reinterpret_cast<GpuDataManagerImpl*>(gpu_data_manager);
 223   DCHECK(manager);
 224
 225   // Display change.
 226   bool display_changed = false;
 227   uint32_t displayCount;
 228   CGGetActiveDisplayList(0, NULL, &displayCount);
 229   if (displayCount != manager->GetDisplayCount()) {
 230     manager->SetDisplayCount(displayCount);
 231     display_changed = true;
 232   }
 233
 234   // Gpu change.
 235   bool gpu_changed = false;
 236   if (flags & kCGDisplayAddFlag) {
 237     uint32 vendor_id, device_id;
 238     if (gpu::CollectGpuID(&vendor_id, &device_id) == gpu::kCollectInfoSuccess) {
 239       gpu_changed = manager->UpdateActiveGpu(vendor_id, device_id);
 240     }
 241   }
 242
 243   if (display_changed || gpu_changed)
 244     manager->HandleGpuSwitch();
 245 }
 246 #endif  // OS_MACOSX
 247
 248 // Block all domains' use of 3D APIs for this many milliseconds if
 249 // approaching a threshold where system stability might be compromised.
 250 const int64 kBlockAllDomainsMs = 10000;
 251 const int kNumResetsWithinDuration = 1;
 252
 253 // Enums for UMA histograms.
 254 enum BlockStatusHistogram {
 255   BLOCK_STATUS_NOT_BLOCKED,
 256   BLOCK_STATUS_SPECIFIC_DOMAIN_BLOCKED,
 257   BLOCK_STATUS_ALL_DOMAINS_BLOCKED,
 258   BLOCK_STATUS_MAX
 259 };
 260
 261 }  // namespace anonymous
 262
 263 void GpuDataManagerImplPrivate::InitializeForTesting(
 264     const std::string& gpu_blacklist_json,
 265     const gpu::GPUInfo& gpu_info) {
 266   // This function is for testing only, so disable histograms.
 267   update_histograms_ = false;
 268
 269   // Prevent all further initialization.
 270   finalized_ = true;
 271
 272   InitializeImpl(gpu_blacklist_json, std::string(), gpu_info);
 273 }
 274
 275 bool GpuDataManagerImplPrivate::IsFeatureBlacklisted(int feature) const {
 276 #if defined(OS_CHROMEOS)
 277   if (feature == gpu::GPU_FEATURE_TYPE_PANEL_FITTING &&
 278       base::CommandLine::ForCurrentProcess()->HasSwitch(
 279           switches::kDisablePanelFitting)) {
 280     return true;
 281   }
 282 #endif  // OS_CHROMEOS
 283   if (use_swiftshader_ || ShouldUseWarp()) {
 284     // Skia's software rendering is probably more efficient than going through
 285     // software emulation of the GPU, so use that.
 286     if (feature == gpu::GPU_FEATURE_TYPE_ACCELERATED_2D_CANVAS)
 287       return true;
 288     return false;
 289   }
 290
 291   return (blacklisted_features_.count(feature) == 1);
 292 }
 293
 294 bool GpuDataManagerImplPrivate::IsDriverBugWorkaroundActive(int feature) const {
 295   return (gpu_driver_bugs_.count(feature) == 1);
 296 }
 297
 298 size_t GpuDataManagerImplPrivate::GetBlacklistedFeatureCount() const {
 299   if (use_swiftshader_ || ShouldUseWarp())
 300     return 1;
 301   return blacklisted_features_.size();
 302 }
 303
 304 void GpuDataManagerImplPrivate::SetDisplayCount(unsigned int display_count) {
 305   display_count_ = display_count;
 306 }
 307
 308 unsigned int GpuDataManagerImplPrivate::GetDisplayCount() const {
 309   return display_count_;
 310 }
 311
 312 gpu::GPUInfo GpuDataManagerImplPrivate::GetGPUInfo() const {
 313   return gpu_info_;
 314 }
 315
 316 void GpuDataManagerImplPrivate::GetGpuProcessHandles(
 317     const GpuDataManager::GetGpuProcessHandlesCallback& callback) const {
 318   GpuProcessHost::GetProcessHandles(callback);
 319 }
 320
 321 bool GpuDataManagerImplPrivate::GpuAccessAllowed(
 322     std::string* reason) const {
 323   if (use_swiftshader_ || ShouldUseWarp())
 324     return true;
 325
 326   if (!gpu_process_accessible_) {
 327     if (reason) {
 328       *reason = "GPU process launch failed.";
 329     }
 330     return false;
 331   }
 332
 333   if (card_blacklisted_) {
 334     if (reason) {
 335       *reason = "GPU access is disabled ";
 336       base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
 337       if (command_line->HasSwitch(switches::kDisableGpu))
 338         *reason += "through commandline switch --disable-gpu.";
 339       else
 340         *reason += "in chrome://settings.";
 341     }
 342     return false;
 343   }
 344
 345   // We only need to block GPU process if more features are disallowed other
 346   // than those in the preliminary gpu feature flags because the latter work
 347   // through renderer commandline switches.
 348   std::set<int> features = preliminary_blacklisted_features_;
 349   gpu::MergeFeatureSets(&features, blacklisted_features_);
 350   if (features.size() > preliminary_blacklisted_features_.size()) {
 351     if (reason) {
 352       *reason = "Features are disabled upon full but not preliminary GPU info.";
 353     }
 354     return false;
 355   }
 356
 357   if (blacklisted_features_.size() == gpu::NUMBER_OF_GPU_FEATURE_TYPES) {
 358     // On Linux, we use cached GL strings to make blacklist decsions at browser
 359     // startup time. We need to launch the GPU process to validate these
 360     // strings even if all features are blacklisted. If all GPU features are
 361     // disabled, the GPU process will only initialize GL bindings, create a GL
 362     // context, and collect full GPU info.
 363 #if !defined(OS_LINUX)
 364     if (reason) {
 365       *reason = "All GPU features are blacklisted.";
 366     }
 367     return false;
 368 #endif
 369   }
 370
 371   return true;
 372 }
 373
 374 void GpuDataManagerImplPrivate::RequestCompleteGpuInfoIfNeeded() {
 375   if (complete_gpu_info_already_requested_ || IsCompleteGpuInfoAvailable())
 376     return;
 377   complete_gpu_info_already_requested_ = true;
 378
 379   GpuProcessHost::SendOnIO(
 380 #if defined(OS_WIN)
 381       GpuProcessHost::GPU_PROCESS_KIND_UNSANDBOXED,
 382 #else
 383       GpuProcessHost::GPU_PROCESS_KIND_SANDBOXED,
 384 #endif
 385       CAUSE_FOR_GPU_LAUNCH_GPUDATAMANAGER_REQUESTCOMPLETEGPUINFOIFNEEDED,
 386       new GpuMsg_CollectGraphicsInfo());
 387 }
 388
 389 bool GpuDataManagerImplPrivate::IsEssentialGpuInfoAvailable() const {
 390   if (gpu_info_.basic_info_state == gpu::kCollectInfoNone ||
 391       gpu_info_.context_info_state == gpu::kCollectInfoNone) {
 392     return false;
 393   }
 394   return true;
 395 }
 396
 397 bool GpuDataManagerImplPrivate::IsCompleteGpuInfoAvailable() const {
 398 #if defined(OS_WIN)
 399   if (gpu_info_.dx_diagnostics_info_state == gpu::kCollectInfoNone)
 400     return false;
 401 #endif
 402   return IsEssentialGpuInfoAvailable();
 403 }
 404
 405 void GpuDataManagerImplPrivate::RequestVideoMemoryUsageStatsUpdate() const {
 406   GpuProcessHost::SendOnIO(
 407       GpuProcessHost::GPU_PROCESS_KIND_SANDBOXED,
 408       CAUSE_FOR_GPU_LAUNCH_NO_LAUNCH,
 409       new GpuMsg_GetVideoMemoryUsageStats());
 410 }
 411
 412 bool GpuDataManagerImplPrivate::ShouldUseSwiftShader() const {
 413   return use_swiftshader_;
 414 }
 415
 416 void GpuDataManagerImplPrivate::RegisterSwiftShaderPath(
 417     const base::FilePath& path) {
 418   swiftshader_path_ = path;
 419   EnableSwiftShaderIfNecessary();
 420 }
 421
 422 bool GpuDataManagerImplPrivate::ShouldUseWarp() const {
 423   std::string angle_impl_flag =
 424       base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
 425           switches::kUseANGLE);
 426   return use_warp_ || angle_impl_flag == gfx::kANGLEImplementationWARPName;
 427 }
 428
 429 void GpuDataManagerImplPrivate::AddObserver(GpuDataManagerObserver* observer) {
 430   GpuDataManagerImpl::UnlockedSession session(owner_);
 431   observer_list_->AddObserver(observer);
 432 }
 433
 434 void GpuDataManagerImplPrivate::RemoveObserver(
 435     GpuDataManagerObserver* observer) {
 436   GpuDataManagerImpl::UnlockedSession session(owner_);
 437   observer_list_->RemoveObserver(observer);
 438 }
 439
 440 void GpuDataManagerImplPrivate::UnblockDomainFrom3DAPIs(const GURL& url) {
 441   // This method must do two things:
 442   //
 443   //  1. If the specific domain is blocked, then unblock it.
 444   //
 445   //  2. Reset our notion of how many GPU resets have occurred recently.
 446   //     This is necessary even if the specific domain was blocked.
 447   //     Otherwise, if we call Are3DAPIsBlocked with the same domain right
 448   //     after unblocking it, it will probably still be blocked because of
 449   //     the recent GPU reset caused by that domain.
 450   //
 451   // These policies could be refined, but at a certain point the behavior
 452   // will become difficult to explain.
 453   std::string domain = GetDomainFromURL(url);
 454
 455   blocked_domains_.erase(domain);
 456   timestamps_of_gpu_resets_.clear();
 457 }
 458
 459 void GpuDataManagerImplPrivate::DisableGpuWatchdog() {
 460   GpuProcessHost::SendOnIO(
 461       GpuProcessHost::GPU_PROCESS_KIND_SANDBOXED,
 462       CAUSE_FOR_GPU_LAUNCH_NO_LAUNCH,
 463       new GpuMsg_DisableWatchdog);
 464 }
 465
 466 void GpuDataManagerImplPrivate::SetGLStrings(const std::string& gl_vendor,
 467                                              const std::string& gl_renderer,
 468                                              const std::string& gl_version) {
 469   if (gl_vendor.empty() && gl_renderer.empty() && gl_version.empty())
 470     return;
 471
 472   // If GPUInfo already got GL strings, do nothing.  This is for the rare
 473   // situation where GPU process collected GL strings before this call.
 474   if (!gpu_info_.gl_vendor.empty() ||
 475       !gpu_info_.gl_renderer.empty() ||
 476       !gpu_info_.gl_version.empty())
 477     return;
 478
 479   gpu::GPUInfo gpu_info = gpu_info_;
 480
 481   gpu_info.gl_vendor = gl_vendor;
 482   gpu_info.gl_renderer = gl_renderer;
 483   gpu_info.gl_version = gl_version;
 484
 485   gpu::CollectDriverInfoGL(&gpu_info);
 486
 487   UpdateGpuInfo(gpu_info);
 488   UpdateGpuSwitchingManager(gpu_info);
 489   UpdatePreliminaryBlacklistedFeatures();
 490 }
 491
 492 void GpuDataManagerImplPrivate::GetGLStrings(std::string* gl_vendor,
 493                                              std::string* gl_renderer,
 494                                              std::string* gl_version) {
 495   DCHECK(gl_vendor && gl_renderer && gl_version);
 496
 497   *gl_vendor = gpu_info_.gl_vendor;
 498   *gl_renderer = gpu_info_.gl_renderer;
 499   *gl_version = gpu_info_.gl_version;
 500 }
 501
 502 void GpuDataManagerImplPrivate::Initialize() {
 503   TRACE_EVENT0("startup", "GpuDataManagerImpl::Initialize");
 504   if (finalized_) {
 505     DVLOG(0) << "GpuDataManagerImpl marked as finalized; skipping Initialize";
 506     return;
 507   }
 508
 509   base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
 510   if (command_line->HasSwitch(switches::kSkipGpuDataLoading))
 511     return;
 512
 513   gpu::GPUInfo gpu_info;
 514   if (command_line->GetSwitchValueASCII(
 515           switches::kUseGL) == gfx::kGLImplementationOSMesaName) {
 516     // If using the OSMesa GL implementation, use fake vendor and device ids to
 517     // make sure it never gets blacklisted. This is better than simply
 518     // cancelling GPUInfo gathering as it allows us to proceed with loading the
 519     // blacklist below which may have non-device specific entries we want to
 520     // apply anyways (e.g., OS version blacklisting).
 521     gpu_info.gpu.vendor_id = 0xffff;
 522     gpu_info.gpu.device_id = 0xffff;
 523
 524     // Also declare the driver_vendor to be osmesa to be able to specify
 525     // exceptions based on driver_vendor==osmesa for some blacklist rules.
 526     gpu_info.driver_vendor = gfx::kGLImplementationOSMesaName;
 527   } else {
 528     TRACE_EVENT0("startup",
 529       "GpuDataManagerImpl::Initialize:CollectBasicGraphicsInfo");
 530     gpu::CollectBasicGraphicsInfo(&gpu_info);
 531   }
 532 #if defined(ARCH_CPU_X86_FAMILY)
 533   if (!gpu_info.gpu.vendor_id || !gpu_info.gpu.device_id) {
 534     gpu_info.context_info_state = gpu::kCollectInfoNonFatalFailure;
 535 #if defined(OS_WIN)
 536     gpu_info.dx_diagnostics_info_state = gpu::kCollectInfoNonFatalFailure;
 537 #endif  // OS_WIN
 538   }
 539 #endif  // ARCH_CPU_X86_FAMILY
 540
 541   std::string gpu_blacklist_string;
 542   std::string gpu_driver_bug_list_string;
 543   if (!command_line->HasSwitch(switches::kIgnoreGpuBlacklist) &&
 544       !command_line->HasSwitch(switches::kUseGpuInTests)) {
 545     gpu_blacklist_string = gpu::kSoftwareRenderingListJson;
 546   }
 547   if (!command_line->HasSwitch(switches::kDisableGpuDriverBugWorkarounds)) {
 548     gpu_driver_bug_list_string = gpu::kGpuDriverBugListJson;
 549   }
 550   InitializeImpl(gpu_blacklist_string,
 551                  gpu_driver_bug_list_string,
 552                  gpu_info);
 553
 554   if (command_line->HasSwitch(switches::kSingleProcess) ||
 555       command_line->HasSwitch(switches::kInProcessGPU)) {
 556     command_line->AppendSwitch(switches::kDisableGpuWatchdog);
 557     AppendGpuCommandLine(command_line);
 558   }
 559 }
 560
 561 void GpuDataManagerImplPrivate::UpdateGpuInfoHelper() {
 562   GetContentClient()->SetGpuInfo(gpu_info_);
 563
 564   if (gpu_blacklist_) {
 565     std::set<int> features = gpu_blacklist_->MakeDecision(
 566         gpu::GpuControlList::kOsAny, std::string(), gpu_info_);
 567     if (update_histograms_)
 568       UpdateStats(gpu_info_, gpu_blacklist_.get(), features);
 569
 570     UpdateBlacklistedFeatures(features);
 571   }
 572   if (gpu_driver_bug_list_) {
 573     gpu_driver_bugs_ = gpu_driver_bug_list_->MakeDecision(
 574         gpu::GpuControlList::kOsAny, std::string(), gpu_info_);
 575
 576     disabled_extensions_ =
 577         base::JoinString(gpu_driver_bug_list_->GetDisabledExtensions(), " ");
 578   }
 579   gpu::GpuDriverBugList::AppendWorkaroundsFromCommandLine(
 580       &gpu_driver_bugs_, *base::CommandLine::ForCurrentProcess());
 581
 582   // We have to update GpuFeatureType before notify all the observers.
 583   NotifyGpuInfoUpdate();
 584 }
 585
 586 void GpuDataManagerImplPrivate::UpdateGpuInfo(const gpu::GPUInfo& gpu_info) {
 587   // No further update of gpu_info if falling back to SwiftShader.
 588   if (use_swiftshader_ || ShouldUseWarp())
 589     return;
 590
 591   bool was_info_available = IsCompleteGpuInfoAvailable();
 592   gpu::MergeGPUInfo(&gpu_info_, gpu_info);
 593   if (IsCompleteGpuInfoAvailable()) {
 594     complete_gpu_info_already_requested_ = true;
 595   } else if (was_info_available) {
 596     // Allow future requests to go through properly.
 597     complete_gpu_info_already_requested_ = false;
 598   }
 599
 600   UpdateGpuInfoHelper();
 601 }
 602
 603 void GpuDataManagerImplPrivate::UpdateVideoMemoryUsageStats(
 604     const GPUVideoMemoryUsageStats& video_memory_usage_stats) {
 605   GpuDataManagerImpl::UnlockedSession session(owner_);
 606   observer_list_->Notify(FROM_HERE,
 607                          &GpuDataManagerObserver::OnVideoMemoryUsageStatsUpdate,
 608                          video_memory_usage_stats);
 609 }
 610
 611 void GpuDataManagerImplPrivate::AppendRendererCommandLine(
 612     base::CommandLine* command_line) const {
 613   DCHECK(command_line);
 614
 615   if (ShouldDisableAcceleratedVideoDecode(command_line))
 616     command_line->AppendSwitch(switches::kDisableAcceleratedVideoDecode);
 617 #if defined(ENABLE_WEBRTC)
 618   if (IsFeatureBlacklisted(gpu::GPU_FEATURE_TYPE_ACCELERATED_VIDEO_ENCODE) &&
 619       !command_line->HasSwitch(switches::kDisableWebRtcHWEncoding))
 620     command_line->AppendSwitch(switches::kDisableWebRtcHWEncoding);
 621 #endif
 622
 623 #if defined(USE_AURA)
 624   if (!CanUseGpuBrowserCompositor())
 625     command_line->AppendSwitch(switches::kDisableGpuCompositing);
 626 #endif
 627 }
 628
 629 void GpuDataManagerImplPrivate::AppendGpuCommandLine(
 630     base::CommandLine* command_line) const {
 631   DCHECK(command_line);
 632
 633   std::string use_gl =
 634       base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
 635           switches::kUseGL);
 636   base::FilePath swiftshader_path =
 637       base::CommandLine::ForCurrentProcess()->GetSwitchValuePath(
 638           switches::kSwiftShaderPath);
 639   if (gpu_driver_bugs_.find(gpu::DISABLE_D3D11) != gpu_driver_bugs_.end())
 640     command_line->AppendSwitch(switches::kDisableD3D11);
 641   if (use_swiftshader_) {
 642     command_line->AppendSwitchASCII(switches::kUseGL, "swiftshader");
 643     if (swiftshader_path.empty())
 644       swiftshader_path = swiftshader_path_;
 645   } else if ((IsFeatureBlacklisted(gpu::GPU_FEATURE_TYPE_WEBGL) ||
 646               IsFeatureBlacklisted(gpu::GPU_FEATURE_TYPE_GPU_COMPOSITING) ||
 647               IsFeatureBlacklisted(
 648                   gpu::GPU_FEATURE_TYPE_ACCELERATED_2D_CANVAS)) &&
 649              (use_gl == "any")) {
 650     command_line->AppendSwitchASCII(
 651         switches::kUseGL, gfx::kGLImplementationOSMesaName);
 652   } else if (!use_gl.empty()) {
 653     command_line->AppendSwitchASCII(switches::kUseGL, use_gl);
 654   }
 655   if (ui::GpuSwitchingManager::GetInstance()->SupportsDualGpus())
 656     command_line->AppendSwitchASCII(switches::kSupportsDualGpus, "true");
 657   else
 658     command_line->AppendSwitchASCII(switches::kSupportsDualGpus, "false");
 659
 660   if (!swiftshader_path.empty()) {
 661     command_line->AppendSwitchPath(switches::kSwiftShaderPath,
 662                                    swiftshader_path);
 663   }
 664
 665   if (!gpu_driver_bugs_.empty()) {
 666     command_line->AppendSwitchASCII(switches::kGpuDriverBugWorkarounds,
 667                                     IntSetToString(gpu_driver_bugs_));
 668   }
 669
 670   if (!disabled_extensions_.empty()) {
 671     command_line->AppendSwitchASCII(switches::kDisableGLExtensions,
 672                                     disabled_extensions_);
 673   }
 674
 675   if (ShouldDisableAcceleratedVideoDecode(command_line)) {
 676     command_line->AppendSwitch(switches::kDisableAcceleratedVideoDecode);
 677   }
 678 #if defined(ENABLE_WEBRTC)
 679   if (IsFeatureBlacklisted(gpu::GPU_FEATURE_TYPE_ACCELERATED_VIDEO_ENCODE) &&
 680       !command_line->HasSwitch(switches::kDisableWebRtcHWEncoding)) {
 681     command_line->AppendSwitch(switches::kDisableWebRtcHWEncoding);
 682   }
 683 #endif
 684
 685   // Pass GPU and driver information to GPU process. We try to avoid full GPU
 686   // info collection at GPU process startup, but we need gpu vendor_id,
 687   // device_id, driver_vendor, driver_version for deciding whether we need to
 688   // collect full info (on Linux) and for crash reporting purpose.
 689   command_line->AppendSwitchASCII(switches::kGpuVendorID,
 690       base::StringPrintf("0x%04x", gpu_info_.gpu.vendor_id));
 691   command_line->AppendSwitchASCII(switches::kGpuDeviceID,
 692       base::StringPrintf("0x%04x", gpu_info_.gpu.device_id));
 693   command_line->AppendSwitchASCII(switches::kGpuDriverVendor,
 694       gpu_info_.driver_vendor);
 695   command_line->AppendSwitchASCII(switches::kGpuDriverVersion,
 696       gpu_info_.driver_version);
 697
 698   if (ShouldUseWarp() && !command_line->HasSwitch(switches::kUseANGLE)) {
 699     command_line->AppendSwitchASCII(switches::kUseANGLE,
 700                                     gfx::kANGLEImplementationWARPName);
 701   }
 702 }
 703
 704 void GpuDataManagerImplPrivate::AppendPluginCommandLine(
 705     base::CommandLine* command_line) const {
 706   DCHECK(command_line);
 707
 708 #if defined(OS_MACOSX)
 709   // TODO(jbauman): Add proper blacklist support for core animation plugins so
 710   // special-casing this video card won't be necessary. See
 711   // http://crbug.com/134015
 712   if (IsFeatureBlacklisted(gpu::GPU_FEATURE_TYPE_GPU_COMPOSITING)) {
 713     if (!command_line->HasSwitch(
 714            switches::kDisableCoreAnimationPlugins))
 715       command_line->AppendSwitch(
 716           switches::kDisableCoreAnimationPlugins);
 717   }
 718 #endif
 719 }
 720
 721 void GpuDataManagerImplPrivate::UpdateRendererWebPrefs(
 722     WebPreferences* prefs) const {
 723   DCHECK(prefs);
 724
 725   if (IsFeatureBlacklisted(gpu::GPU_FEATURE_TYPE_WEBGL)) {
 726     prefs->experimental_webgl_enabled = false;
 727     prefs->pepper_3d_enabled = false;
 728   }
 729   if (IsFeatureBlacklisted(gpu::GPU_FEATURE_TYPE_FLASH3D))
 730     prefs->flash_3d_enabled = false;
 731   if (IsFeatureBlacklisted(gpu::GPU_FEATURE_TYPE_FLASH_STAGE3D)) {
 732     prefs->flash_stage3d_enabled = false;
 733     prefs->flash_stage3d_baseline_enabled = false;
 734   }
 735   if (IsFeatureBlacklisted(gpu::GPU_FEATURE_TYPE_FLASH_STAGE3D_BASELINE))
 736     prefs->flash_stage3d_baseline_enabled = false;
 737   if (IsFeatureBlacklisted(gpu::GPU_FEATURE_TYPE_ACCELERATED_2D_CANVAS))
 738     prefs->accelerated_2d_canvas_enabled = false;
 739   // TODO(senorblanco): The renderer shouldn't have an extra setting
 740   // for this, but should rely on extension availability.
 741   // Note that |gl_multisampling_enabled| only affects the decoder's
 742   // default framebuffer allocation, which does not support
 743   // multisampled_render_to_texture, only msaa with explicit resolve.
 744   if (IsDriverBugWorkaroundActive(
 745           gpu::DISABLE_CHROMIUM_FRAMEBUFFER_MULTISAMPLE) ||
 746       (IsDriverBugWorkaroundActive(gpu::DISABLE_MULTIMONITOR_MULTISAMPLING) &&
 747        display_count_ > 1))
 748     prefs->gl_multisampling_enabled = false;
 749
 750 #if defined(USE_AURA)
 751   if (!CanUseGpuBrowserCompositor()) {
 752     prefs->accelerated_2d_canvas_enabled = false;
 753     prefs->pepper_3d_enabled = false;
 754   }
 755 #endif
 756
 757   const base::CommandLine* command_line =
 758       base::CommandLine::ForCurrentProcess();
 759   if (!ShouldDisableAcceleratedVideoDecode(command_line) &&
 760       !command_line->HasSwitch(switches::kDisableAcceleratedVideoDecode)) {
 761     prefs->pepper_accelerated_video_decode_enabled = true;
 762   }
 763 }
 764
 765 void GpuDataManagerImplPrivate::DisableHardwareAcceleration() {
 766   card_blacklisted_ = true;
 767
 768   for (int i = 0; i < gpu::NUMBER_OF_GPU_FEATURE_TYPES; ++i)
 769     blacklisted_features_.insert(i);
 770
 771   EnableWarpIfNecessary();
 772   EnableSwiftShaderIfNecessary();
 773   NotifyGpuInfoUpdate();
 774 }
 775
 776 std::string GpuDataManagerImplPrivate::GetBlacklistVersion() const {
 777   if (gpu_blacklist_)
 778     return gpu_blacklist_->version();
 779   return "0";
 780 }
 781
 782 std::string GpuDataManagerImplPrivate::GetDriverBugListVersion() const {
 783   if (gpu_driver_bug_list_)
 784     return gpu_driver_bug_list_->version();
 785   return "0";
 786 }
 787
 788 void GpuDataManagerImplPrivate::GetBlacklistReasons(
 789     base::ListValue* reasons) const {
 790   if (gpu_blacklist_)
 791     gpu_blacklist_->GetReasons(reasons, "disabledFeatures");
 792   if (gpu_driver_bug_list_)
 793     gpu_driver_bug_list_->GetReasons(reasons, "workarounds");
 794 }
 795
 796 std::vector<std::string>
 797 GpuDataManagerImplPrivate::GetDriverBugWorkarounds() const {
 798   std::vector<std::string> workarounds;
 799   for (std::set<int>::const_iterator it = gpu_driver_bugs_.begin();
 800        it != gpu_driver_bugs_.end(); ++it) {
 801     workarounds.push_back(
 802         gpu::GpuDriverBugWorkaroundTypeToString(
 803             static_cast<gpu::GpuDriverBugWorkaroundType>(*it)));
 804   }
 805   return workarounds;
 806 }
 807
 808 void GpuDataManagerImplPrivate::AddLogMessage(
 809     int level, const std::string& header, const std::string& message) {
 810   log_messages_.push_back(LogMessage(level, header, message));
 811 }
 812
 813 void GpuDataManagerImplPrivate::ProcessCrashed(
 814     base::TerminationStatus exit_code) {
 815   if (!BrowserThread::CurrentlyOn(BrowserThread::UI)) {
 816     // Unretained is ok, because it's posted to UI thread, the thread
 817     // where the singleton GpuDataManagerImpl lives until the end.
 818     BrowserThread::PostTask(
 819         BrowserThread::UI,
 820         FROM_HERE,
 821         base::Bind(&GpuDataManagerImpl::ProcessCrashed,
 822                    base::Unretained(owner_),
 823                    exit_code));
 824     return;
 825   }
 826   {
 827     gpu_info_.process_crash_count = GpuProcessHost::gpu_crash_count();
 828     GpuDataManagerImpl::UnlockedSession session(owner_);
 829     observer_list_->Notify(
 830         FROM_HERE, &GpuDataManagerObserver::OnGpuProcessCrashed, exit_code);
 831   }
 832 }
 833
 834 base::ListValue* GpuDataManagerImplPrivate::GetLogMessages() const {
 835   base::ListValue* value = new base::ListValue;
 836   for (size_t ii = 0; ii < log_messages_.size(); ++ii) {
 837     base::DictionaryValue* dict = new base::DictionaryValue();
 838     dict->SetInteger("level", log_messages_[ii].level);
 839     dict->SetString("header", log_messages_[ii].header);
 840     dict->SetString("message", log_messages_[ii].message);
 841     value->Append(dict);
 842   }
 843   return value;
 844 }
 845
 846 void GpuDataManagerImplPrivate::HandleGpuSwitch() {
 847   GpuDataManagerImpl::UnlockedSession session(owner_);
 848   // Notify observers in the browser process.
 849   ui::GpuSwitchingManager::GetInstance()->NotifyGpuSwitched();
 850   // Pass the notification to the GPU process to notify observers there.
 851   GpuProcessHost::SendOnIO(
 852       GpuProcessHost::GPU_PROCESS_KIND_SANDBOXED,
 853       CAUSE_FOR_GPU_LAUNCH_NO_LAUNCH,
 854       new GpuMsg_GpuSwitched);
 855 }
 856
 857 bool GpuDataManagerImplPrivate::UpdateActiveGpu(
 858     uint32 vendor_id, uint32 device_id) {
 859   if (gpu_info_.gpu.vendor_id == vendor_id &&
 860       gpu_info_.gpu.device_id == device_id) {
 861     // The primary GPU is active.
 862     if (gpu_info_.gpu.active)
 863       return false;
 864     gpu_info_.gpu.active = true;
 865     for (size_t ii = 0; ii < gpu_info_.secondary_gpus.size(); ++ii)
 866       gpu_info_.secondary_gpus[ii].active = false;
 867   } else {
 868     // A secondary GPU is active.
 869     for (size_t ii = 0; ii < gpu_info_.secondary_gpus.size(); ++ii) {
 870       if (gpu_info_.secondary_gpus[ii].vendor_id == vendor_id &&
 871           gpu_info_.secondary_gpus[ii].device_id == device_id) {
 872         if (gpu_info_.secondary_gpus[ii].active)
 873           return false;
 874         gpu_info_.secondary_gpus[ii].active = true;
 875       } else {
 876         gpu_info_.secondary_gpus[ii].active = false;
 877       }
 878     }
 879     gpu_info_.gpu.active = false;
 880   }
 881   UpdateGpuInfoHelper();
 882   return true;
 883 }
 884
 885 bool GpuDataManagerImplPrivate::CanUseGpuBrowserCompositor() const {
 886   if (base::CommandLine::ForCurrentProcess()->HasSwitch(
 887           switches::kDisableGpuCompositing))
 888     return false;
 889   if (ShouldUseWarp())
 890     return true;
 891   if (ShouldUseSwiftShader())
 892     return false;
 893   if (IsFeatureBlacklisted(gpu::GPU_FEATURE_TYPE_GPU_COMPOSITING))
 894     return false;
 895   return true;
 896 }
 897
 898
 899 bool GpuDataManagerImplPrivate::ShouldDisableAcceleratedVideoDecode(
 900     const base::CommandLine* command_line) const {
 901   // Make sure that we initialize the experiment first to make sure that
 902   // statistics are bucket correctly in all cases.
 903   // This experiment is temporary and will be removed once enough data
 904   // to resolve crbug/442039 has been collected.
 905   const std::string group_name = base::FieldTrialList::FindFullName(
 906       "DisableAcceleratedVideoDecode");
 907   if (command_line->HasSwitch(switches::kDisableAcceleratedVideoDecode)) {
 908     // It was already disabled on the command line.
 909     return false;
 910   }
 911   if (IsFeatureBlacklisted(gpu::GPU_FEATURE_TYPE_ACCELERATED_VIDEO_DECODE))
 912     return true;
 913   if (group_name == "Disabled")
 914     return true;
 915   return false;
 916 }
 917
 918 void GpuDataManagerImplPrivate::GetDisabledExtensions(
 919     std::string* disabled_extensions) const {
 920   DCHECK(disabled_extensions);
 921
 922   *disabled_extensions = disabled_extensions_;
 923 }
 924
 925 void GpuDataManagerImplPrivate::BlockDomainFrom3DAPIs(
 926     const GURL& url, GpuDataManagerImpl::DomainGuilt guilt) {
 927   BlockDomainFrom3DAPIsAtTime(url, guilt, base::Time::Now());
 928 }
 929
 930 bool GpuDataManagerImplPrivate::Are3DAPIsBlocked(const GURL& top_origin_url,
 931                                                  int render_process_id,
 932                                                  int render_frame_id,
 933                                                  ThreeDAPIType requester) {
 934   bool blocked = Are3DAPIsBlockedAtTime(top_origin_url, base::Time::Now()) !=
 935       GpuDataManagerImpl::DOMAIN_BLOCK_STATUS_NOT_BLOCKED;
 936   if (blocked) {
 937     // Unretained is ok, because it's posted to UI thread, the thread
 938     // where the singleton GpuDataManagerImpl lives until the end.
 939     BrowserThread::PostTask(
 940         BrowserThread::UI, FROM_HERE,
 941         base::Bind(&GpuDataManagerImpl::Notify3DAPIBlocked,
 942                    base::Unretained(owner_), top_origin_url, render_process_id,
 943                    render_frame_id, requester));
 944   }
 945
 946   return blocked;
 947 }
 948
 949 void GpuDataManagerImplPrivate::DisableDomainBlockingFor3DAPIsForTesting() {
 950   domain_blocking_enabled_ = false;
 951 }
 952
 953 // static
 954 GpuDataManagerImplPrivate* GpuDataManagerImplPrivate::Create(
 955     GpuDataManagerImpl* owner) {
 956   return new GpuDataManagerImplPrivate(owner);
 957 }
 958
 959 GpuDataManagerImplPrivate::GpuDataManagerImplPrivate(
 960     GpuDataManagerImpl* owner)
 961     : complete_gpu_info_already_requested_(false),
 962       observer_list_(new GpuDataManagerObserverList),
 963       use_swiftshader_(false),
 964       use_warp_(false),
 965       card_blacklisted_(false),
 966       update_histograms_(true),
 967       window_count_(0),
 968       domain_blocking_enabled_(true),
 969       owner_(owner),
 970       display_count_(0),
 971       gpu_process_accessible_(true),
 972       finalized_(false) {
 973   DCHECK(owner_);
 974   const base::CommandLine* command_line =
 975       base::CommandLine::ForCurrentProcess();
 976   if (command_line->HasSwitch(switches::kDisableGpu))
 977     DisableHardwareAcceleration();
 978
 979 #if defined(OS_MACOSX)
 980   CGGetActiveDisplayList (0, NULL, &display_count_);
 981   CGDisplayRegisterReconfigurationCallback(DisplayReconfigCallback, owner_);
 982 #endif  // OS_MACOSX
 983
 984   // For testing only.
 985   if (command_line->HasSwitch(switches::kDisableDomainBlockingFor3DAPIs)) {
 986     domain_blocking_enabled_ = false;
 987   }
 988 }
 989
 990 GpuDataManagerImplPrivate::~GpuDataManagerImplPrivate() {
 991 #if defined(OS_MACOSX)
 992   CGDisplayRemoveReconfigurationCallback(DisplayReconfigCallback, owner_);
 993 #endif
 994 }
 995
 996 void GpuDataManagerImplPrivate::InitializeImpl(
 997     const std::string& gpu_blacklist_json,
 998     const std::string& gpu_driver_bug_list_json,
 999     const gpu::GPUInfo& gpu_info) {
1000   const bool log_gpu_control_list_decisions =
1001       base::CommandLine::ForCurrentProcess()->HasSwitch(
1002           switches::kLogGpuControlListDecisions);
1003
1004   if (!gpu_blacklist_json.empty()) {
1005     gpu_blacklist_.reset(gpu::GpuBlacklist::Create());
1006     if (log_gpu_control_list_decisions)
1007       gpu_blacklist_->enable_control_list_logging("gpu_blacklist");
1008     bool success = gpu_blacklist_->LoadList(
1009         gpu_blacklist_json, gpu::GpuControlList::kCurrentOsOnly);
1010     DCHECK(success);
1011   }
1012   if (!gpu_driver_bug_list_json.empty()) {
1013     gpu_driver_bug_list_.reset(gpu::GpuDriverBugList::Create());
1014     if (log_gpu_control_list_decisions)
1015       gpu_driver_bug_list_->enable_control_list_logging("gpu_driver_bug_list");
1016     bool success = gpu_driver_bug_list_->LoadList(
1017         gpu_driver_bug_list_json, gpu::GpuControlList::kCurrentOsOnly);
1018     DCHECK(success);
1019   }
1020
1021   gpu_info_ = gpu_info;
1022   UpdateGpuInfo(gpu_info);
1023   UpdateGpuSwitchingManager(gpu_info);
1024   UpdatePreliminaryBlacklistedFeatures();
1025 }
1026
1027 void GpuDataManagerImplPrivate::UpdateBlacklistedFeatures(
1028     const std::set<int>& features) {
1029   blacklisted_features_ = features;
1030
1031   // Force disable using the GPU for these features, even if they would
1032   // otherwise be allowed.
1033   if (card_blacklisted_) {
1034     blacklisted_features_.insert(gpu::GPU_FEATURE_TYPE_GPU_COMPOSITING);
1035     blacklisted_features_.insert(gpu::GPU_FEATURE_TYPE_WEBGL);
1036   }
1037
1038   EnableWarpIfNecessary();
1039   EnableSwiftShaderIfNecessary();
1040 }
1041
1042 void GpuDataManagerImplPrivate::UpdatePreliminaryBlacklistedFeatures() {
1043   preliminary_blacklisted_features_ = blacklisted_features_;
1044 }
1045
1046 void GpuDataManagerImplPrivate::UpdateGpuSwitchingManager(
1047     const gpu::GPUInfo& gpu_info) {
1048   // The vendor IDs might be 0 on non-PCI devices (like Android), but
1049   // the length of the vector is all we care about in most cases.
1050   std::vector<uint32> vendor_ids;
1051   vendor_ids.push_back(gpu_info.gpu.vendor_id);
1052   for (const auto& device : gpu_info.secondary_gpus) {
1053     vendor_ids.push_back(device.vendor_id);
1054   }
1055   ui::GpuSwitchingManager::GetInstance()->SetGpuVendorIds(vendor_ids);
1056
1057   if (ui::GpuSwitchingManager::GetInstance()->SupportsDualGpus()) {
1058     if (gpu_driver_bugs_.count(gpu::FORCE_DISCRETE_GPU) == 1)
1059       ui::GpuSwitchingManager::GetInstance()->ForceUseOfDiscreteGpu();
1060     else if (gpu_driver_bugs_.count(gpu::FORCE_INTEGRATED_GPU) == 1)
1061       ui::GpuSwitchingManager::GetInstance()->ForceUseOfIntegratedGpu();
1062   }
1063 }
1064
1065 void GpuDataManagerImplPrivate::NotifyGpuInfoUpdate() {
1066   observer_list_->Notify(FROM_HERE, &GpuDataManagerObserver::OnGpuInfoUpdate);
1067 }
1068
1069 void GpuDataManagerImplPrivate::EnableSwiftShaderIfNecessary() {
1070   if (ShouldUseWarp())
1071     return;
1072
1073   if (!GpuAccessAllowed(NULL) ||
1074       blacklisted_features_.count(gpu::GPU_FEATURE_TYPE_WEBGL)) {
1075     if (!swiftshader_path_.empty() &&
1076         !base::CommandLine::ForCurrentProcess()->HasSwitch(
1077              switches::kDisableSoftwareRasterizer))
1078       use_swiftshader_ = true;
1079   }
1080 }
1081
1082 void GpuDataManagerImplPrivate::EnableWarpIfNecessary() {
1083 #if defined(OS_WIN)
1084   if (use_warp_)
1085     return;
1086   // We should only use WARP if we are unable to use the regular GPU for
1087   // compositing, and if we in Metro mode.
1088   use_warp_ = base::CommandLine::ForCurrentProcess()->HasSwitch(
1089                   switches::kViewerConnect) &&
1090               !CanUseGpuBrowserCompositor();
1091 #endif
1092 }
1093
1094 void GpuDataManagerImplPrivate::ForceWarpModeForTesting() {
1095   use_warp_ = true;
1096 }
1097
1098 std::string GpuDataManagerImplPrivate::GetDomainFromURL(
1099     const GURL& url) const {
1100   // For the moment, we just use the host, or its IP address, as the
1101   // entry in the set, rather than trying to figure out the top-level
1102   // domain. This does mean that a.foo.com and b.foo.com will be
1103   // treated independently in the blocking of a given domain, but it
1104   // would require a third-party library to reliably figure out the
1105   // top-level domain from a URL.
1106   if (!url.has_host()) {
1107     return std::string();
1108   }
1109
1110   return url.host();
1111 }
1112
1113 void GpuDataManagerImplPrivate::BlockDomainFrom3DAPIsAtTime(
1114     const GURL& url,
1115     GpuDataManagerImpl::DomainGuilt guilt,
1116     base::Time at_time) {
1117   if (!domain_blocking_enabled_)
1118     return;
1119
1120   std::string domain = GetDomainFromURL(url);
1121
1122   DomainBlockEntry& entry = blocked_domains_[domain];
1123   entry.last_guilt = guilt;
1124   timestamps_of_gpu_resets_.push_back(at_time);
1125 }
1126
1127 GpuDataManagerImpl::DomainBlockStatus
1128 GpuDataManagerImplPrivate::Are3DAPIsBlockedAtTime(
1129     const GURL& url, base::Time at_time) const {
1130   if (!domain_blocking_enabled_)
1131     return GpuDataManagerImpl::DOMAIN_BLOCK_STATUS_NOT_BLOCKED;
1132
1133   // Note: adjusting the policies in this code will almost certainly
1134   // require adjusting the associated unit tests.
1135   std::string domain = GetDomainFromURL(url);
1136
1137   DomainBlockMap::const_iterator iter = blocked_domains_.find(domain);
1138   if (iter != blocked_domains_.end()) {
1139     // Err on the side of caution, and assume that if a particular
1140     // domain shows up in the block map, it's there for a good
1141     // reason and don't let its presence there automatically expire.
1142
1143     UMA_HISTOGRAM_ENUMERATION("GPU.BlockStatusForClient3DAPIs",
1144                               BLOCK_STATUS_SPECIFIC_DOMAIN_BLOCKED,
1145                               BLOCK_STATUS_MAX);
1146
1147     return GpuDataManagerImpl::DOMAIN_BLOCK_STATUS_BLOCKED;
1148   }
1149
1150   // Look at the timestamps of the recent GPU resets to see if there are
1151   // enough within the threshold which would cause us to blacklist all
1152   // domains. This doesn't need to be overly precise -- if time goes
1153   // backward due to a system clock adjustment, that's fine.
1154   //
1155   // TODO(kbr): make this pay attention to the TDR thresholds in the
1156   // Windows registry, but make sure it continues to be testable.
1157   {
1158     std::list<base::Time>::iterator iter = timestamps_of_gpu_resets_.begin();
1159     int num_resets_within_timeframe = 0;
1160     while (iter != timestamps_of_gpu_resets_.end()) {
1161       base::Time time = *iter;
1162       base::TimeDelta delta_t = at_time - time;
1163
1164       // If this entry has "expired", just remove it.
1165       if (delta_t.InMilliseconds() > kBlockAllDomainsMs) {
1166         iter = timestamps_of_gpu_resets_.erase(iter);
1167         continue;
1168       }
1169
1170       ++num_resets_within_timeframe;
1171       ++iter;
1172     }
1173
1174     if (num_resets_within_timeframe >= kNumResetsWithinDuration) {
1175       UMA_HISTOGRAM_ENUMERATION("GPU.BlockStatusForClient3DAPIs",
1176                                 BLOCK_STATUS_ALL_DOMAINS_BLOCKED,
1177                                 BLOCK_STATUS_MAX);
1178
1179       return GpuDataManagerImpl::DOMAIN_BLOCK_STATUS_ALL_DOMAINS_BLOCKED;
1180     }
1181   }
1182
1183   UMA_HISTOGRAM_ENUMERATION("GPU.BlockStatusForClient3DAPIs",
1184                             BLOCK_STATUS_NOT_BLOCKED,
1185                             BLOCK_STATUS_MAX);
1186
1187   return GpuDataManagerImpl::DOMAIN_BLOCK_STATUS_NOT_BLOCKED;
1188 }
1189
1190 int64 GpuDataManagerImplPrivate::GetBlockAllDomainsDurationInMs() const {
1191   return kBlockAllDomainsMs;
1192 }
1193
1194 void GpuDataManagerImplPrivate::Notify3DAPIBlocked(const GURL& top_origin_url,
1195                                                    int render_process_id,
1196                                                    int render_frame_id,
1197                                                    ThreeDAPIType requester) {
1198   GpuDataManagerImpl::UnlockedSession session(owner_);
1199   observer_list_->Notify(FROM_HERE, &GpuDataManagerObserver::DidBlock3DAPIs,
1200                          top_origin_url, render_process_id, render_frame_id,
1201                          requester);
1202 }
1203
1204 void GpuDataManagerImplPrivate::OnGpuProcessInitFailure() {
1205   gpu_process_accessible_ = false;
1206   gpu_info_.context_info_state = gpu::kCollectInfoFatalFailure;
1207 #if defined(OS_WIN)
1208   gpu_info_.dx_diagnostics_info_state = gpu::kCollectInfoFatalFailure;
1209 #endif
1210   complete_gpu_info_already_requested_ = true;
1211   // Some observers might be waiting.
1212   NotifyGpuInfoUpdate();
1213 }
1214
1215 }  // namespace content