content/child/blink_platform_impl.cc

   1 // Copyright 2014 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/child/blink_platform_impl.h"
   6
   7 #include <math.h>
   8
   9 #include <vector>
  10
  11 #include "base/allocator/allocator_extension.h"
  12 #include "base/bind.h"
  13 #include "base/files/file_path.h"
  14 #include "base/location.h"
  15 #include "base/memory/scoped_ptr.h"
  16 #include "base/memory/singleton.h"
  17 #include "base/metrics/histogram.h"
  18 #include "base/metrics/sparse_histogram.h"
  19 #include "base/process/process_metrics.h"
  20 #include "base/rand_util.h"
  21 #include "base/single_thread_task_runner.h"
  22 #include "base/strings/string_number_conversions.h"
  23 #include "base/strings/string_util.h"
  24 #include "base/strings/utf_string_conversions.h"
  25 #include "base/synchronization/lock.h"
  26 #include "base/synchronization/waitable_event.h"
  27 #include "base/sys_info.h"
  28 #include "base/thread_task_runner_handle.h"
  29 #include "base/threading/platform_thread.h"
  30 #include "base/time/time.h"
  31 #include "base/trace_event/memory_allocator_dump_guid.h"
  32 #include "base/trace_event/memory_dump_manager.h"
  33 #include "base/trace_event/trace_event.h"
  34 #include "blink/public/resources/grit/blink_image_resources.h"
  35 #include "blink/public/resources/grit/blink_resources.h"
  36 #include "components/mime_util/mime_util.h"
  37 #include "components/scheduler/child/webthread_impl_for_worker_scheduler.h"
  38 #include "content/app/resources/grit/content_resources.h"
  39 #include "content/app/strings/grit/content_strings.h"
  40 #include "content/child/background_sync/background_sync_provider.h"
  41 #include "content/child/background_sync/background_sync_provider_thread_proxy.h"
  42 #include "content/child/bluetooth/web_bluetooth_impl.h"
  43 #include "content/child/child_thread_impl.h"
  44 #include "content/child/content_child_helpers.h"
  45 #include "content/child/geofencing/web_geofencing_provider_impl.h"
  46 #include "content/child/navigator_connect/navigator_connect_provider.h"
  47 #include "content/child/notifications/notification_dispatcher.h"
  48 #include "content/child/notifications/notification_manager.h"
  49 #include "content/child/permissions/permission_dispatcher.h"
  50 #include "content/child/permissions/permission_dispatcher_thread_proxy.h"
  51 #include "content/child/push_messaging/push_dispatcher.h"
  52 #include "content/child/push_messaging/push_provider.h"
  53 #include "content/child/thread_safe_sender.h"
  54 #include "content/child/web_discardable_memory_impl.h"
  55 #include "content/child/web_memory_dump_provider_adapter.h"
  56 #include "content/child/web_process_memory_dump_impl.h"
  57 #include "content/child/web_url_loader_impl.h"
  58 #include "content/child/web_url_request_util.h"
  59 #include "content/child/websocket_bridge.h"
  60 #include "content/child/worker_task_runner.h"
  61 #include "content/public/common/content_client.h"
  62 #include "net/base/data_url.h"
  63 #include "net/base/ip_address_number.h"
  64 #include "net/base/net_errors.h"
  65 #include "net/base/net_util.h"
  66 #include "third_party/WebKit/public/platform/WebConvertableToTraceFormat.h"
  67 #include "third_party/WebKit/public/platform/WebData.h"
  68 #include "third_party/WebKit/public/platform/WebFloatPoint.h"
  69 #include "third_party/WebKit/public/platform/WebMemoryDumpProvider.h"
  70 #include "third_party/WebKit/public/platform/WebString.h"
  71 #include "third_party/WebKit/public/platform/WebURL.h"
  72 #include "third_party/WebKit/public/platform/WebWaitableEvent.h"
  73 #include "third_party/WebKit/public/web/WebSecurityOrigin.h"
  74 #include "ui/base/layout.h"
  75 #include "ui/events/gestures/blink/web_gesture_curve_impl.h"
  76 #include "ui/events/keycodes/dom/keycode_converter.h"
  77
  78 using blink::WebData;
  79 using blink::WebFallbackThemeEngine;
  80 using blink::WebLocalizedString;
  81 using blink::WebString;
  82 using blink::WebThemeEngine;
  83 using blink::WebURL;
  84 using blink::WebURLError;
  85 using blink::WebURLLoader;
  86
  87 namespace content {
  88
  89 namespace {
  90
  91 class WebWaitableEventImpl : public blink::WebWaitableEvent {
  92  public:
  93   WebWaitableEventImpl() : impl_(new base::WaitableEvent(false, false)) {}
  94   virtual ~WebWaitableEventImpl() {}
  95
  96   virtual void wait() { impl_->Wait(); }
  97   virtual void signal() { impl_->Signal(); }
  98
  99   base::WaitableEvent* impl() {
 100     return impl_.get();
 101   }
 102
 103  private:
 104   scoped_ptr<base::WaitableEvent> impl_;
 105   DISALLOW_COPY_AND_ASSIGN(WebWaitableEventImpl);
 106 };
 107
 108 // A simple class to cache the memory usage for a given amount of time.
 109 class MemoryUsageCache {
 110  public:
 111   // Retrieves the Singleton.
 112   static MemoryUsageCache* GetInstance() {
 113     return Singleton<MemoryUsageCache>::get();
 114   }
 115
 116   MemoryUsageCache() : memory_value_(0) { Init(); }
 117   ~MemoryUsageCache() {}
 118
 119   void Init() {
 120     const unsigned int kCacheSeconds = 1;
 121     cache_valid_time_ = base::TimeDelta::FromSeconds(kCacheSeconds);
 122   }
 123
 124   // Returns true if the cached value is fresh.
 125   // Returns false if the cached value is stale, or if |cached_value| is NULL.
 126   bool IsCachedValueValid(size_t* cached_value) {
 127     base::AutoLock scoped_lock(lock_);
 128     if (!cached_value)
 129       return false;
 130     if (base::Time::Now() - last_updated_time_ > cache_valid_time_)
 131       return false;
 132     *cached_value = memory_value_;
 133     return true;
 134   };
 135
 136   // Setter for |memory_value_|, refreshes |last_updated_time_|.
 137   void SetMemoryValue(const size_t value) {
 138     base::AutoLock scoped_lock(lock_);
 139     memory_value_ = value;
 140     last_updated_time_ = base::Time::Now();
 141   }
 142
 143  private:
 144   // The cached memory value.
 145   size_t memory_value_;
 146
 147   // How long the cached value should remain valid.
 148   base::TimeDelta cache_valid_time_;
 149
 150   // The last time the cached value was updated.
 151   base::Time last_updated_time_;
 152
 153   base::Lock lock_;
 154 };
 155
 156 class ConvertableToTraceFormatWrapper
 157     : public base::trace_event::ConvertableToTraceFormat {
 158  public:
 159   // We move a reference pointer from |convertable| to |convertable_|,
 160   // rather than copying, for thread safety. https://crbug.com/478149
 161   explicit ConvertableToTraceFormatWrapper(
 162       blink::WebConvertableToTraceFormat& convertable) {
 163     convertable_.moveFrom(convertable);
 164   }
 165   void AppendAsTraceFormat(std::string* out) const override {
 166     *out += convertable_.asTraceFormat().utf8();
 167   }
 168
 169  private:
 170   ~ConvertableToTraceFormatWrapper() override {}
 171
 172   blink::WebConvertableToTraceFormat convertable_;
 173 };
 174
 175 }  // namespace
 176
 177 static int ToMessageID(WebLocalizedString::Name name) {
 178   switch (name) {
 179     case WebLocalizedString::AXAMPMFieldText:
 180       return IDS_AX_AM_PM_FIELD_TEXT;
 181     case WebLocalizedString::AXButtonActionVerb:
 182       return IDS_AX_BUTTON_ACTION_VERB;
 183     case WebLocalizedString::AXCalendarShowMonthSelector:
 184       return IDS_AX_CALENDAR_SHOW_MONTH_SELECTOR;
 185     case WebLocalizedString::AXCalendarShowNextMonth:
 186       return IDS_AX_CALENDAR_SHOW_NEXT_MONTH;
 187     case WebLocalizedString::AXCalendarShowPreviousMonth:
 188       return IDS_AX_CALENDAR_SHOW_PREVIOUS_MONTH;
 189     case WebLocalizedString::AXCalendarWeekDescription:
 190       return IDS_AX_CALENDAR_WEEK_DESCRIPTION;
 191     case WebLocalizedString::AXCheckedCheckBoxActionVerb:
 192       return IDS_AX_CHECKED_CHECK_BOX_ACTION_VERB;
 193     case WebLocalizedString::AXDateTimeFieldEmptyValueText:
 194       return IDS_AX_DATE_TIME_FIELD_EMPTY_VALUE_TEXT;
 195     case WebLocalizedString::AXDayOfMonthFieldText:
 196       return IDS_AX_DAY_OF_MONTH_FIELD_TEXT;
 197     case WebLocalizedString::AXHeadingText:
 198       return IDS_AX_ROLE_HEADING;
 199     case WebLocalizedString::AXHourFieldText:
 200       return IDS_AX_HOUR_FIELD_TEXT;
 201     case WebLocalizedString::AXImageMapText:
 202       return IDS_AX_ROLE_IMAGE_MAP;
 203     case WebLocalizedString::AXLinkActionVerb:
 204       return IDS_AX_LINK_ACTION_VERB;
 205     case WebLocalizedString::AXLinkText:
 206       return IDS_AX_ROLE_LINK;
 207     case WebLocalizedString::AXListMarkerText:
 208       return IDS_AX_ROLE_LIST_MARKER;
 209     case WebLocalizedString::AXMediaDefault:
 210       return IDS_AX_MEDIA_DEFAULT;
 211     case WebLocalizedString::AXMediaAudioElement:
 212       return IDS_AX_MEDIA_AUDIO_ELEMENT;
 213     case WebLocalizedString::AXMediaVideoElement:
 214       return IDS_AX_MEDIA_VIDEO_ELEMENT;
 215     case WebLocalizedString::AXMediaMuteButton:
 216       return IDS_AX_MEDIA_MUTE_BUTTON;
 217     case WebLocalizedString::AXMediaUnMuteButton:
 218       return IDS_AX_MEDIA_UNMUTE_BUTTON;
 219     case WebLocalizedString::AXMediaPlayButton:
 220       return IDS_AX_MEDIA_PLAY_BUTTON;
 221     case WebLocalizedString::AXMediaPauseButton:
 222       return IDS_AX_MEDIA_PAUSE_BUTTON;
 223     case WebLocalizedString::AXMediaSlider:
 224       return IDS_AX_MEDIA_SLIDER;
 225     case WebLocalizedString::AXMediaSliderThumb:
 226       return IDS_AX_MEDIA_SLIDER_THUMB;
 227     case WebLocalizedString::AXMediaCurrentTimeDisplay:
 228       return IDS_AX_MEDIA_CURRENT_TIME_DISPLAY;
 229     case WebLocalizedString::AXMediaTimeRemainingDisplay:
 230       return IDS_AX_MEDIA_TIME_REMAINING_DISPLAY;
 231     case WebLocalizedString::AXMediaStatusDisplay:
 232       return IDS_AX_MEDIA_STATUS_DISPLAY;
 233     case WebLocalizedString::AXMediaEnterFullscreenButton:
 234       return IDS_AX_MEDIA_ENTER_FULL_SCREEN_BUTTON;
 235     case WebLocalizedString::AXMediaExitFullscreenButton:
 236       return IDS_AX_MEDIA_EXIT_FULL_SCREEN_BUTTON;
 237     case WebLocalizedString::AXMediaShowClosedCaptionsButton:
 238       return IDS_AX_MEDIA_SHOW_CLOSED_CAPTIONS_BUTTON;
 239     case WebLocalizedString::AXMediaHideClosedCaptionsButton:
 240       return IDS_AX_MEDIA_HIDE_CLOSED_CAPTIONS_BUTTON;
 241     case WebLocalizedString::AxMediaCastOffButton:
 242       return IDS_AX_MEDIA_CAST_OFF_BUTTON;
 243     case WebLocalizedString::AxMediaCastOnButton:
 244       return IDS_AX_MEDIA_CAST_ON_BUTTON;
 245     case WebLocalizedString::AXMediaAudioElementHelp:
 246       return IDS_AX_MEDIA_AUDIO_ELEMENT_HELP;
 247     case WebLocalizedString::AXMediaVideoElementHelp:
 248       return IDS_AX_MEDIA_VIDEO_ELEMENT_HELP;
 249     case WebLocalizedString::AXMediaMuteButtonHelp:
 250       return IDS_AX_MEDIA_MUTE_BUTTON_HELP;
 251     case WebLocalizedString::AXMediaUnMuteButtonHelp:
 252       return IDS_AX_MEDIA_UNMUTE_BUTTON_HELP;
 253     case WebLocalizedString::AXMediaPlayButtonHelp:
 254       return IDS_AX_MEDIA_PLAY_BUTTON_HELP;
 255     case WebLocalizedString::AXMediaPauseButtonHelp:
 256       return IDS_AX_MEDIA_PAUSE_BUTTON_HELP;
 257     case WebLocalizedString::AXMediaAudioSliderHelp:
 258       return IDS_AX_MEDIA_AUDIO_SLIDER_HELP;
 259     case WebLocalizedString::AXMediaVideoSliderHelp:
 260       return IDS_AX_MEDIA_VIDEO_SLIDER_HELP;
 261     case WebLocalizedString::AXMediaSliderThumbHelp:
 262       return IDS_AX_MEDIA_SLIDER_THUMB_HELP;
 263     case WebLocalizedString::AXMediaCurrentTimeDisplayHelp:
 264       return IDS_AX_MEDIA_CURRENT_TIME_DISPLAY_HELP;
 265     case WebLocalizedString::AXMediaTimeRemainingDisplayHelp:
 266       return IDS_AX_MEDIA_TIME_REMAINING_DISPLAY_HELP;
 267     case WebLocalizedString::AXMediaStatusDisplayHelp:
 268       return IDS_AX_MEDIA_STATUS_DISPLAY_HELP;
 269     case WebLocalizedString::AXMediaEnterFullscreenButtonHelp:
 270       return IDS_AX_MEDIA_ENTER_FULL_SCREEN_BUTTON_HELP;
 271     case WebLocalizedString::AXMediaExitFullscreenButtonHelp:
 272       return IDS_AX_MEDIA_EXIT_FULL_SCREEN_BUTTON_HELP;
 273     case WebLocalizedString::AXMediaShowClosedCaptionsButtonHelp:
 274       return IDS_AX_MEDIA_SHOW_CLOSED_CAPTIONS_BUTTON_HELP;
 275     case WebLocalizedString::AXMediaHideClosedCaptionsButtonHelp:
 276       return IDS_AX_MEDIA_HIDE_CLOSED_CAPTIONS_BUTTON_HELP;
 277     case WebLocalizedString::AxMediaCastOffButtonHelp:
 278       return IDS_AX_MEDIA_CAST_OFF_BUTTON_HELP;
 279     case WebLocalizedString::AxMediaCastOnButtonHelp:
 280       return IDS_AX_MEDIA_CAST_ON_BUTTON_HELP;
 281     case WebLocalizedString::AXMillisecondFieldText:
 282       return IDS_AX_MILLISECOND_FIELD_TEXT;
 283     case WebLocalizedString::AXMinuteFieldText:
 284       return IDS_AX_MINUTE_FIELD_TEXT;
 285     case WebLocalizedString::AXMonthFieldText:
 286       return IDS_AX_MONTH_FIELD_TEXT;
 287     case WebLocalizedString::AXRadioButtonActionVerb:
 288       return IDS_AX_RADIO_BUTTON_ACTION_VERB;
 289     case WebLocalizedString::AXSecondFieldText:
 290       return IDS_AX_SECOND_FIELD_TEXT;
 291     case WebLocalizedString::AXTextFieldActionVerb:
 292       return IDS_AX_TEXT_FIELD_ACTION_VERB;
 293     case WebLocalizedString::AXUncheckedCheckBoxActionVerb:
 294       return IDS_AX_UNCHECKED_CHECK_BOX_ACTION_VERB;
 295     case WebLocalizedString::AXWebAreaText:
 296       return IDS_AX_ROLE_WEB_AREA;
 297     case WebLocalizedString::AXWeekOfYearFieldText:
 298       return IDS_AX_WEEK_OF_YEAR_FIELD_TEXT;
 299     case WebLocalizedString::AXYearFieldText:
 300       return IDS_AX_YEAR_FIELD_TEXT;
 301     case WebLocalizedString::CalendarClear:
 302       return IDS_FORM_CALENDAR_CLEAR;
 303     case WebLocalizedString::CalendarToday:
 304       return IDS_FORM_CALENDAR_TODAY;
 305     case WebLocalizedString::DateFormatDayInMonthLabel:
 306       return IDS_FORM_DATE_FORMAT_DAY_IN_MONTH;
 307     case WebLocalizedString::DateFormatMonthLabel:
 308       return IDS_FORM_DATE_FORMAT_MONTH;
 309     case WebLocalizedString::DateFormatYearLabel:
 310       return IDS_FORM_DATE_FORMAT_YEAR;
 311     case WebLocalizedString::DetailsLabel:
 312       return IDS_DETAILS_WITHOUT_SUMMARY_LABEL;
 313     case WebLocalizedString::FileButtonChooseFileLabel:
 314       return IDS_FORM_FILE_BUTTON_LABEL;
 315     case WebLocalizedString::FileButtonChooseMultipleFilesLabel:
 316       return IDS_FORM_MULTIPLE_FILES_BUTTON_LABEL;
 317     case WebLocalizedString::FileButtonNoFileSelectedLabel:
 318       return IDS_FORM_FILE_NO_FILE_LABEL;
 319     case WebLocalizedString::InputElementAltText:
 320       return IDS_FORM_INPUT_ALT;
 321     case WebLocalizedString::KeygenMenuHighGradeKeySize:
 322       return IDS_KEYGEN_HIGH_GRADE_KEY;
 323     case WebLocalizedString::KeygenMenuMediumGradeKeySize:
 324       return IDS_KEYGEN_MED_GRADE_KEY;
 325     case WebLocalizedString::MissingPluginText:
 326       return IDS_PLUGIN_INITIALIZATION_ERROR;
 327     case WebLocalizedString::MultipleFileUploadText:
 328       return IDS_FORM_FILE_MULTIPLE_UPLOAD;
 329     case WebLocalizedString::OtherColorLabel:
 330       return IDS_FORM_OTHER_COLOR_LABEL;
 331     case WebLocalizedString::OtherDateLabel:
 332         return IDS_FORM_OTHER_DATE_LABEL;
 333     case WebLocalizedString::OtherMonthLabel:
 334       return IDS_FORM_OTHER_MONTH_LABEL;
 335     case WebLocalizedString::OtherTimeLabel:
 336       return IDS_FORM_OTHER_TIME_LABEL;
 337     case WebLocalizedString::OtherWeekLabel:
 338       return IDS_FORM_OTHER_WEEK_LABEL;
 339     case WebLocalizedString::PlaceholderForDayOfMonthField:
 340       return IDS_FORM_PLACEHOLDER_FOR_DAY_OF_MONTH_FIELD;
 341     case WebLocalizedString::PlaceholderForMonthField:
 342       return IDS_FORM_PLACEHOLDER_FOR_MONTH_FIELD;
 343     case WebLocalizedString::PlaceholderForYearField:
 344       return IDS_FORM_PLACEHOLDER_FOR_YEAR_FIELD;
 345     case WebLocalizedString::ResetButtonDefaultLabel:
 346       return IDS_FORM_RESET_LABEL;
 347     case WebLocalizedString::SearchableIndexIntroduction:
 348       return IDS_SEARCHABLE_INDEX_INTRO;
 349     case WebLocalizedString::SearchMenuClearRecentSearchesText:
 350       return IDS_RECENT_SEARCHES_CLEAR;
 351     case WebLocalizedString::SearchMenuNoRecentSearchesText:
 352       return IDS_RECENT_SEARCHES_NONE;
 353     case WebLocalizedString::SearchMenuRecentSearchesText:
 354       return IDS_RECENT_SEARCHES;
 355     case WebLocalizedString::SelectMenuListText:
 356       return IDS_FORM_SELECT_MENU_LIST_TEXT;
 357     case WebLocalizedString::SubmitButtonDefaultLabel:
 358       return IDS_FORM_SUBMIT_LABEL;
 359     case WebLocalizedString::ThisMonthButtonLabel:
 360       return IDS_FORM_THIS_MONTH_LABEL;
 361     case WebLocalizedString::ThisWeekButtonLabel:
 362       return IDS_FORM_THIS_WEEK_LABEL;
 363     case WebLocalizedString::ValidationBadInputForDateTime:
 364       return IDS_FORM_VALIDATION_BAD_INPUT_DATETIME;
 365     case WebLocalizedString::ValidationBadInputForNumber:
 366       return IDS_FORM_VALIDATION_BAD_INPUT_NUMBER;
 367     case WebLocalizedString::ValidationPatternMismatch:
 368       return IDS_FORM_VALIDATION_PATTERN_MISMATCH;
 369     case WebLocalizedString::ValidationRangeOverflow:
 370       return IDS_FORM_VALIDATION_RANGE_OVERFLOW;
 371     case WebLocalizedString::ValidationRangeOverflowDateTime:
 372       return IDS_FORM_VALIDATION_RANGE_OVERFLOW_DATETIME;
 373     case WebLocalizedString::ValidationRangeUnderflow:
 374       return IDS_FORM_VALIDATION_RANGE_UNDERFLOW;
 375     case WebLocalizedString::ValidationRangeUnderflowDateTime:
 376       return IDS_FORM_VALIDATION_RANGE_UNDERFLOW_DATETIME;
 377     case WebLocalizedString::ValidationStepMismatch:
 378       return IDS_FORM_VALIDATION_STEP_MISMATCH;
 379     case WebLocalizedString::ValidationStepMismatchCloseToLimit:
 380       return IDS_FORM_VALIDATION_STEP_MISMATCH_CLOSE_TO_LIMIT;
 381     case WebLocalizedString::ValidationTooLong:
 382       return IDS_FORM_VALIDATION_TOO_LONG;
 383     case WebLocalizedString::ValidationTooShort:
 384       return IDS_FORM_VALIDATION_TOO_SHORT;
 385     case WebLocalizedString::ValidationTypeMismatch:
 386       return IDS_FORM_VALIDATION_TYPE_MISMATCH;
 387     case WebLocalizedString::ValidationTypeMismatchForEmail:
 388       return IDS_FORM_VALIDATION_TYPE_MISMATCH_EMAIL;
 389     case WebLocalizedString::ValidationTypeMismatchForEmailEmpty:
 390       return IDS_FORM_VALIDATION_TYPE_MISMATCH_EMAIL_EMPTY;
 391     case WebLocalizedString::ValidationTypeMismatchForEmailEmptyDomain:
 392       return IDS_FORM_VALIDATION_TYPE_MISMATCH_EMAIL_EMPTY_DOMAIN;
 393     case WebLocalizedString::ValidationTypeMismatchForEmailEmptyLocal:
 394       return IDS_FORM_VALIDATION_TYPE_MISMATCH_EMAIL_EMPTY_LOCAL;
 395     case WebLocalizedString::ValidationTypeMismatchForEmailInvalidDomain:
 396       return IDS_FORM_VALIDATION_TYPE_MISMATCH_EMAIL_INVALID_DOMAIN;
 397     case WebLocalizedString::ValidationTypeMismatchForEmailInvalidDots:
 398       return IDS_FORM_VALIDATION_TYPE_MISMATCH_EMAIL_INVALID_DOTS;
 399     case WebLocalizedString::ValidationTypeMismatchForEmailInvalidLocal:
 400       return IDS_FORM_VALIDATION_TYPE_MISMATCH_EMAIL_INVALID_LOCAL;
 401     case WebLocalizedString::ValidationTypeMismatchForEmailNoAtSign:
 402       return IDS_FORM_VALIDATION_TYPE_MISMATCH_EMAIL_NO_AT_SIGN;
 403     case WebLocalizedString::ValidationTypeMismatchForMultipleEmail:
 404       return IDS_FORM_VALIDATION_TYPE_MISMATCH_MULTIPLE_EMAIL;
 405     case WebLocalizedString::ValidationTypeMismatchForURL:
 406       return IDS_FORM_VALIDATION_TYPE_MISMATCH_URL;
 407     case WebLocalizedString::ValidationValueMissing:
 408       return IDS_FORM_VALIDATION_VALUE_MISSING;
 409     case WebLocalizedString::ValidationValueMissingForCheckbox:
 410       return IDS_FORM_VALIDATION_VALUE_MISSING_CHECKBOX;
 411     case WebLocalizedString::ValidationValueMissingForFile:
 412       return IDS_FORM_VALIDATION_VALUE_MISSING_FILE;
 413     case WebLocalizedString::ValidationValueMissingForMultipleFile:
 414       return IDS_FORM_VALIDATION_VALUE_MISSING_MULTIPLE_FILE;
 415     case WebLocalizedString::ValidationValueMissingForRadio:
 416       return IDS_FORM_VALIDATION_VALUE_MISSING_RADIO;
 417     case WebLocalizedString::ValidationValueMissingForSelect:
 418       return IDS_FORM_VALIDATION_VALUE_MISSING_SELECT;
 419     case WebLocalizedString::WeekFormatTemplate:
 420       return IDS_FORM_INPUT_WEEK_TEMPLATE;
 421     case WebLocalizedString::WeekNumberLabel:
 422       return IDS_FORM_WEEK_NUMBER_LABEL;
 423     // This "default:" line exists to avoid compile warnings about enum
 424     // coverage when we add a new symbol to WebLocalizedString.h in WebKit.
 425     // After a planned WebKit patch is landed, we need to add a case statement
 426     // for the added symbol here.
 427     default:
 428       break;
 429   }
 430   return -1;
 431 }
 432
 433 // TODO(skyostil): Ensure that we always have an active task runner when
 434 // constructing the platform.
 435 BlinkPlatformImpl::BlinkPlatformImpl()
 436     : BlinkPlatformImpl(base::ThreadTaskRunnerHandle::IsSet()
 437                             ? base::ThreadTaskRunnerHandle::Get()
 438                             : nullptr) {
 439 }
 440
 441 BlinkPlatformImpl::BlinkPlatformImpl(
 442     scoped_refptr<base::SingleThreadTaskRunner> main_thread_task_runner)
 443     : main_thread_task_runner_(main_thread_task_runner) {
 444   InternalInit();
 445 }
 446
 447 void BlinkPlatformImpl::InternalInit() {
 448   // ChildThread may not exist in some tests.
 449   if (ChildThreadImpl::current()) {
 450     geofencing_provider_.reset(new WebGeofencingProviderImpl(
 451         ChildThreadImpl::current()->thread_safe_sender()));
 452     bluetooth_.reset(
 453         new WebBluetoothImpl(ChildThreadImpl::current()->thread_safe_sender()));
 454     thread_safe_sender_ = ChildThreadImpl::current()->thread_safe_sender();
 455     notification_dispatcher_ =
 456         ChildThreadImpl::current()->notification_dispatcher();
 457     push_dispatcher_ = ChildThreadImpl::current()->push_dispatcher();
 458     permission_client_.reset(new PermissionDispatcher(
 459         ChildThreadImpl::current()->service_registry()));
 460     sync_provider_.reset(new BackgroundSyncProvider(
 461         ChildThreadImpl::current()->service_registry()));
 462   }
 463 }
 464
 465 void BlinkPlatformImpl::UpdateWebThreadTLS(blink::WebThread* thread) {
 466   DCHECK(!current_thread_slot_.Get());
 467   current_thread_slot_.Set(thread);
 468 }
 469
 470 BlinkPlatformImpl::~BlinkPlatformImpl() {
 471 }
 472
 473 WebURLLoader* BlinkPlatformImpl::createURLLoader() {
 474   ChildThreadImpl* child_thread = ChildThreadImpl::current();
 475   // There may be no child thread in RenderViewTests.  These tests can still use
 476   // data URLs to bypass the ResourceDispatcher.
 477   return new WebURLLoaderImpl(
 478       child_thread ? child_thread->resource_dispatcher() : NULL,
 479       MainTaskRunnerForCurrentThread());
 480 }
 481
 482 blink::WebSocketHandle* BlinkPlatformImpl::createWebSocketHandle() {
 483   return new WebSocketBridge;
 484 }
 485
 486 WebString BlinkPlatformImpl::userAgent() {
 487   return WebString::fromUTF8(GetContentClient()->GetUserAgent());
 488 }
 489
 490 WebData BlinkPlatformImpl::parseDataURL(const WebURL& url,
 491                                         WebString& mimetype_out,
 492                                         WebString& charset_out) {
 493   std::string mime_type, char_set, data;
 494   if (net::DataURL::Parse(url, &mime_type, &char_set, &data) &&
 495       mime_util::IsSupportedMimeType(mime_type)) {
 496     mimetype_out = WebString::fromUTF8(mime_type);
 497     charset_out = WebString::fromUTF8(char_set);
 498     return data;
 499   }
 500   return WebData();
 501 }
 502
 503 WebURLError BlinkPlatformImpl::cancelledError(
 504     const WebURL& unreachableURL) const {
 505   return CreateWebURLError(unreachableURL, false, net::ERR_ABORTED);
 506 }
 507
 508 bool BlinkPlatformImpl::isReservedIPAddress(
 509     const blink::WebString& host) const {
 510   net::IPAddressNumber address;
 511   if (!net::ParseURLHostnameToNumber(host.utf8(), &address))
 512     return false;
 513   return net::IsIPAddressReserved(address);
 514 }
 515
 516 bool BlinkPlatformImpl::portAllowed(const blink::WebURL& url) const {
 517   GURL gurl = GURL(url);
 518   // Return true for URLs without a port specified.  This is needed to let
 519   // through non-network schemes that don't go over the network.
 520   if (!gurl.has_port())
 521     return true;
 522   return net::IsPortAllowedForScheme(gurl.EffectiveIntPort(), gurl.scheme());
 523 }
 524
 525 blink::WebThread* BlinkPlatformImpl::createThread(const char* name) {
 526   scheduler::WebThreadImplForWorkerScheduler* thread =
 527       new scheduler::WebThreadImplForWorkerScheduler(name);
 528   thread->TaskRunner()->PostTask(
 529       FROM_HERE, base::Bind(&BlinkPlatformImpl::UpdateWebThreadTLS,
 530                             base::Unretained(this), thread));
 531   return thread;
 532 }
 533
 534 blink::WebThread* BlinkPlatformImpl::currentThread() {
 535   return static_cast<blink::WebThread*>(current_thread_slot_.Get());
 536 }
 537
 538 void BlinkPlatformImpl::yieldCurrentThread() {
 539   base::PlatformThread::YieldCurrentThread();
 540 }
 541
 542 blink::WebWaitableEvent* BlinkPlatformImpl::createWaitableEvent() {
 543   return new WebWaitableEventImpl();
 544 }
 545
 546 blink::WebWaitableEvent* BlinkPlatformImpl::waitMultipleEvents(
 547     const blink::WebVector<blink::WebWaitableEvent*>& web_events) {
 548   std::vector<base::WaitableEvent*> events;
 549   for (size_t i = 0; i < web_events.size(); ++i)
 550     events.push_back(static_cast<WebWaitableEventImpl*>(web_events[i])->impl());
 551   size_t idx = base::WaitableEvent::WaitMany(
 552       vector_as_array(&events), events.size());
 553   DCHECK_LT(idx, web_events.size());
 554   return web_events[idx];
 555 }
 556
 557 void BlinkPlatformImpl::decrementStatsCounter(const char* name) {
 558 }
 559
 560 void BlinkPlatformImpl::incrementStatsCounter(const char* name) {
 561 }
 562
 563 void BlinkPlatformImpl::histogramCustomCounts(
 564     const char* name, int sample, int min, int max, int bucket_count) {
 565   // Copied from histogram macro, but without the static variable caching
 566   // the histogram because name is dynamic.
 567   base::HistogramBase* counter =
 568       base::Histogram::FactoryGet(name, min, max, bucket_count,
 569           base::HistogramBase::kUmaTargetedHistogramFlag);
 570   DCHECK_EQ(name, counter->histogram_name());
 571   counter->Add(sample);
 572 }
 573
 574 void BlinkPlatformImpl::histogramEnumeration(
 575     const char* name, int sample, int boundary_value) {
 576   // Copied from histogram macro, but without the static variable caching
 577   // the histogram because name is dynamic.
 578   base::HistogramBase* counter =
 579       base::LinearHistogram::FactoryGet(name, 1, boundary_value,
 580           boundary_value + 1, base::HistogramBase::kUmaTargetedHistogramFlag);
 581   DCHECK_EQ(name, counter->histogram_name());
 582   counter->Add(sample);
 583 }
 584
 585 void BlinkPlatformImpl::histogramSparse(const char* name, int sample) {
 586   // For sparse histograms, we can use the macro, as it does not incorporate a
 587   // static.
 588   UMA_HISTOGRAM_SPARSE_SLOWLY(name, sample);
 589 }
 590
 591 const unsigned char* BlinkPlatformImpl::getTraceCategoryEnabledFlag(
 592     const char* category_group) {
 593   return TRACE_EVENT_API_GET_CATEGORY_GROUP_ENABLED(category_group);
 594 }
 595
 596 blink::Platform::TraceEventAPIAtomicWord*
 597 BlinkPlatformImpl::getTraceSamplingState(const unsigned thread_bucket) {
 598   switch (thread_bucket) {
 599     case 0:
 600       return reinterpret_cast<blink::Platform::TraceEventAPIAtomicWord*>(
 601           &TRACE_EVENT_API_THREAD_BUCKET(0));
 602     case 1:
 603       return reinterpret_cast<blink::Platform::TraceEventAPIAtomicWord*>(
 604           &TRACE_EVENT_API_THREAD_BUCKET(1));
 605     case 2:
 606       return reinterpret_cast<blink::Platform::TraceEventAPIAtomicWord*>(
 607           &TRACE_EVENT_API_THREAD_BUCKET(2));
 608     default:
 609       NOTREACHED() << "Unknown thread bucket type.";
 610   }
 611   return NULL;
 612 }
 613
 614 static_assert(
 615     sizeof(blink::Platform::TraceEventHandle) ==
 616         sizeof(base::trace_event::TraceEventHandle),
 617     "TraceEventHandle types must be same size");
 618
 619 blink::Platform::TraceEventHandle BlinkPlatformImpl::addTraceEvent(
 620     char phase,
 621     const unsigned char* category_group_enabled,
 622     const char* name,
 623     unsigned long long id,
 624     double timestamp,
 625     int num_args,
 626     const char** arg_names,
 627     const unsigned char* arg_types,
 628     const unsigned long long* arg_values,
 629     unsigned char flags) {
 630   base::TraceTicks timestamp_tt =
 631       base::TraceTicks() + base::TimeDelta::FromSecondsD(timestamp);
 632   base::trace_event::TraceEventHandle handle =
 633       TRACE_EVENT_API_ADD_TRACE_EVENT_WITH_THREAD_ID_AND_TIMESTAMP(
 634           phase, category_group_enabled, name, id,
 635           base::PlatformThread::CurrentId(),
 636           timestamp_tt,
 637           num_args, arg_names, arg_types, arg_values, NULL, flags);
 638   blink::Platform::TraceEventHandle result;
 639   memcpy(&result, &handle, sizeof(result));
 640   return result;
 641 }
 642
 643 blink::Platform::TraceEventHandle BlinkPlatformImpl::addTraceEvent(
 644     char phase,
 645     const unsigned char* category_group_enabled,
 646     const char* name,
 647     unsigned long long id,
 648     double timestamp,
 649     int num_args,
 650     const char** arg_names,
 651     const unsigned char* arg_types,
 652     const unsigned long long* arg_values,
 653     blink::WebConvertableToTraceFormat* convertable_values,
 654     unsigned char flags) {
 655   scoped_refptr<base::trace_event::ConvertableToTraceFormat>
 656       convertable_wrappers[2];
 657   if (convertable_values) {
 658     size_t size = std::min(static_cast<size_t>(num_args),
 659                            arraysize(convertable_wrappers));
 660     for (size_t i = 0; i < size; ++i) {
 661       if (arg_types[i] == TRACE_VALUE_TYPE_CONVERTABLE) {
 662         convertable_wrappers[i] =
 663             new ConvertableToTraceFormatWrapper(convertable_values[i]);
 664       }
 665     }
 666   }
 667   base::TraceTicks timestamp_tt =
 668       base::TraceTicks() + base::TimeDelta::FromSecondsD(timestamp);
 669   base::trace_event::TraceEventHandle handle =
 670       TRACE_EVENT_API_ADD_TRACE_EVENT_WITH_THREAD_ID_AND_TIMESTAMP(phase,
 671                                       category_group_enabled,
 672                                       name,
 673                                       id,
 674                                       base::PlatformThread::CurrentId(),
 675                                       timestamp_tt,
 676                                       num_args,
 677                                       arg_names,
 678                                       arg_types,
 679                                       arg_values,
 680                                       convertable_wrappers,
 681                                       flags);
 682   blink::Platform::TraceEventHandle result;
 683   memcpy(&result, &handle, sizeof(result));
 684   return result;
 685 }
 686
 687 void BlinkPlatformImpl::updateTraceEventDuration(
 688     const unsigned char* category_group_enabled,
 689     const char* name,
 690     TraceEventHandle handle) {
 691   base::trace_event::TraceEventHandle traceEventHandle;
 692   memcpy(&traceEventHandle, &handle, sizeof(handle));
 693   TRACE_EVENT_API_UPDATE_TRACE_EVENT_DURATION(
 694       category_group_enabled, name, traceEventHandle);
 695 }
 696
 697 void BlinkPlatformImpl::registerMemoryDumpProvider(
 698     blink::WebMemoryDumpProvider* wmdp) {
 699   WebMemoryDumpProviderAdapter* wmdp_adapter =
 700       new WebMemoryDumpProviderAdapter(wmdp);
 701   bool did_insert =
 702       memory_dump_providers_.add(wmdp, make_scoped_ptr(wmdp_adapter)).second;
 703   if (!did_insert)
 704     return;
 705   wmdp_adapter->set_is_registered(true);
 706   base::trace_event::MemoryDumpManager::GetInstance()->RegisterDumpProvider(
 707       wmdp_adapter, base::ThreadTaskRunnerHandle::Get());
 708 }
 709
 710 void BlinkPlatformImpl::unregisterMemoryDumpProvider(
 711     blink::WebMemoryDumpProvider* wmdp) {
 712   scoped_ptr<WebMemoryDumpProviderAdapter> wmdp_adapter =
 713       memory_dump_providers_.take_and_erase(wmdp);
 714   if (!wmdp_adapter)
 715     return;
 716   base::trace_event::MemoryDumpManager::GetInstance()->UnregisterDumpProvider(
 717       wmdp_adapter.get());
 718   wmdp_adapter->set_is_registered(false);
 719 }
 720
 721 blink::WebProcessMemoryDump* BlinkPlatformImpl::createProcessMemoryDump() {
 722   return new WebProcessMemoryDumpImpl();
 723 }
 724
 725 blink::Platform::WebMemoryAllocatorDumpGuid
 726 BlinkPlatformImpl::createWebMemoryAllocatorDumpGuid(
 727     const blink::WebString& guidStr) {
 728   return base::trace_event::MemoryAllocatorDumpGuid(guidStr.utf8()).ToUint64();
 729 }
 730
 731 namespace {
 732
 733 WebData loadAudioSpatializationResource(const char* name) {
 734 #ifdef IDR_AUDIO_SPATIALIZATION_COMPOSITE
 735   if (!strcmp(name, "Composite")) {
 736     base::StringPiece resource = GetContentClient()->GetDataResource(
 737         IDR_AUDIO_SPATIALIZATION_COMPOSITE, ui::SCALE_FACTOR_NONE);
 738     return WebData(resource.data(), resource.size());
 739   }
 740 #endif
 741
 742 #ifdef IDR_AUDIO_SPATIALIZATION_T000_P000
 743   const size_t kExpectedSpatializationNameLength = 31;
 744   if (strlen(name) != kExpectedSpatializationNameLength) {
 745     return WebData();
 746   }
 747
 748   // Extract the azimuth and elevation from the resource name.
 749   int azimuth = 0;
 750   int elevation = 0;
 751   int values_parsed =
 752       sscanf(name, "IRC_Composite_C_R0195_T%3d_P%3d", &azimuth, &elevation);
 753   if (values_parsed != 2) {
 754     return WebData();
 755   }
 756
 757   // The resource index values go through the elevations first, then azimuths.
 758   const int kAngleSpacing = 15;
 759
 760   // 0 <= elevation <= 90 (or 315 <= elevation <= 345)
 761   // in increments of 15 degrees.
 762   int elevation_index =
 763       elevation <= 90 ? elevation / kAngleSpacing :
 764       7 + (elevation - 315) / kAngleSpacing;
 765   bool is_elevation_index_good = 0 <= elevation_index && elevation_index < 10;
 766
 767   // 0 <= azimuth < 360 in increments of 15 degrees.
 768   int azimuth_index = azimuth / kAngleSpacing;
 769   bool is_azimuth_index_good = 0 <= azimuth_index && azimuth_index < 24;
 770
 771   const int kNumberOfElevations = 10;
 772   const int kNumberOfAudioResources = 240;
 773   int resource_index = kNumberOfElevations * azimuth_index + elevation_index;
 774   bool is_resource_index_good = 0 <= resource_index &&
 775       resource_index < kNumberOfAudioResources;
 776
 777   if (is_azimuth_index_good && is_elevation_index_good &&
 778       is_resource_index_good) {
 779     const int kFirstAudioResourceIndex = IDR_AUDIO_SPATIALIZATION_T000_P000;
 780     base::StringPiece resource = GetContentClient()->GetDataResource(
 781         kFirstAudioResourceIndex + resource_index, ui::SCALE_FACTOR_NONE);
 782     return WebData(resource.data(), resource.size());
 783   }
 784 #endif  // IDR_AUDIO_SPATIALIZATION_T000_P000
 785
 786   NOTREACHED();
 787   return WebData();
 788 }
 789
 790 struct DataResource {
 791   const char* name;
 792   int id;
 793   ui::ScaleFactor scale_factor;
 794 };
 795
 796 const DataResource kDataResources[] = {
 797     {"missingImage", IDR_BROKENIMAGE, ui::SCALE_FACTOR_100P},
 798     {"missingImage@2x", IDR_BROKENIMAGE, ui::SCALE_FACTOR_200P},
 799     {"mediaplayerPause", IDR_MEDIAPLAYER_PAUSE_BUTTON, ui::SCALE_FACTOR_100P},
 800     {"mediaplayerPauseHover",
 801      IDR_MEDIAPLAYER_PAUSE_BUTTON_HOVER,
 802      ui::SCALE_FACTOR_100P},
 803     {"mediaplayerPauseDown",
 804      IDR_MEDIAPLAYER_PAUSE_BUTTON_DOWN,
 805      ui::SCALE_FACTOR_100P},
 806     {"mediaplayerPlay", IDR_MEDIAPLAYER_PLAY_BUTTON, ui::SCALE_FACTOR_100P},
 807     {"mediaplayerPlayHover",
 808      IDR_MEDIAPLAYER_PLAY_BUTTON_HOVER,
 809      ui::SCALE_FACTOR_100P},
 810     {"mediaplayerPlayDown",
 811      IDR_MEDIAPLAYER_PLAY_BUTTON_DOWN,
 812      ui::SCALE_FACTOR_100P},
 813     {"mediaplayerPlayDisabled",
 814      IDR_MEDIAPLAYER_PLAY_BUTTON_DISABLED,
 815      ui::SCALE_FACTOR_100P},
 816     {"mediaplayerSoundLevel3",
 817      IDR_MEDIAPLAYER_SOUND_LEVEL3_BUTTON,
 818      ui::SCALE_FACTOR_100P},
 819     {"mediaplayerSoundLevel3Hover",
 820      IDR_MEDIAPLAYER_SOUND_LEVEL3_BUTTON_HOVER,
 821      ui::SCALE_FACTOR_100P},
 822     {"mediaplayerSoundLevel3Down",
 823      IDR_MEDIAPLAYER_SOUND_LEVEL3_BUTTON_DOWN,
 824      ui::SCALE_FACTOR_100P},
 825     {"mediaplayerSoundLevel2",
 826      IDR_MEDIAPLAYER_SOUND_LEVEL2_BUTTON,
 827      ui::SCALE_FACTOR_100P},
 828     {"mediaplayerSoundLevel2Hover",
 829      IDR_MEDIAPLAYER_SOUND_LEVEL2_BUTTON_HOVER,
 830      ui::SCALE_FACTOR_100P},
 831     {"mediaplayerSoundLevel2Down",
 832      IDR_MEDIAPLAYER_SOUND_LEVEL2_BUTTON_DOWN,
 833      ui::SCALE_FACTOR_100P},
 834     {"mediaplayerSoundLevel1",
 835      IDR_MEDIAPLAYER_SOUND_LEVEL1_BUTTON,
 836      ui::SCALE_FACTOR_100P},
 837     {"mediaplayerSoundLevel1Hover",
 838      IDR_MEDIAPLAYER_SOUND_LEVEL1_BUTTON_HOVER,
 839      ui::SCALE_FACTOR_100P},
 840     {"mediaplayerSoundLevel1Down",
 841      IDR_MEDIAPLAYER_SOUND_LEVEL1_BUTTON_DOWN,
 842      ui::SCALE_FACTOR_100P},
 843     {"mediaplayerSoundLevel0",
 844      IDR_MEDIAPLAYER_SOUND_LEVEL0_BUTTON,
 845      ui::SCALE_FACTOR_100P},
 846     {"mediaplayerSoundLevel0Hover",
 847      IDR_MEDIAPLAYER_SOUND_LEVEL0_BUTTON_HOVER,
 848      ui::SCALE_FACTOR_100P},
 849     {"mediaplayerSoundLevel0Down",
 850      IDR_MEDIAPLAYER_SOUND_LEVEL0_BUTTON_DOWN,
 851      ui::SCALE_FACTOR_100P},
 852     {"mediaplayerSoundDisabled",
 853      IDR_MEDIAPLAYER_SOUND_DISABLED,
 854      ui::SCALE_FACTOR_100P},
 855     {"mediaplayerSliderThumb",
 856      IDR_MEDIAPLAYER_SLIDER_THUMB,
 857      ui::SCALE_FACTOR_100P},
 858     {"mediaplayerSliderThumbHover",
 859      IDR_MEDIAPLAYER_SLIDER_THUMB_HOVER,
 860      ui::SCALE_FACTOR_100P},
 861     {"mediaplayerSliderThumbDown",
 862      IDR_MEDIAPLAYER_SLIDER_THUMB_DOWN,
 863      ui::SCALE_FACTOR_100P},
 864     {"mediaplayerVolumeSliderThumb",
 865      IDR_MEDIAPLAYER_VOLUME_SLIDER_THUMB,
 866      ui::SCALE_FACTOR_100P},
 867     {"mediaplayerVolumeSliderThumbHover",
 868      IDR_MEDIAPLAYER_VOLUME_SLIDER_THUMB_HOVER,
 869      ui::SCALE_FACTOR_100P},
 870     {"mediaplayerVolumeSliderThumbDown",
 871      IDR_MEDIAPLAYER_VOLUME_SLIDER_THUMB_DOWN,
 872      ui::SCALE_FACTOR_100P},
 873     {"mediaplayerVolumeSliderThumbDisabled",
 874      IDR_MEDIAPLAYER_VOLUME_SLIDER_THUMB_DISABLED,
 875      ui::SCALE_FACTOR_100P},
 876     {"mediaplayerClosedCaption",
 877      IDR_MEDIAPLAYER_CLOSEDCAPTION_BUTTON,
 878      ui::SCALE_FACTOR_100P},
 879     {"mediaplayerClosedCaptionHover",
 880      IDR_MEDIAPLAYER_CLOSEDCAPTION_BUTTON_HOVER,
 881      ui::SCALE_FACTOR_100P},
 882     {"mediaplayerClosedCaptionDown",
 883      IDR_MEDIAPLAYER_CLOSEDCAPTION_BUTTON_DOWN,
 884      ui::SCALE_FACTOR_100P},
 885     {"mediaplayerClosedCaptionDisabled",
 886      IDR_MEDIAPLAYER_CLOSEDCAPTION_BUTTON_DISABLED,
 887      ui::SCALE_FACTOR_100P},
 888     {"mediaplayerFullscreen",
 889      IDR_MEDIAPLAYER_FULLSCREEN_BUTTON,
 890      ui::SCALE_FACTOR_100P},
 891     {"mediaplayerFullscreenHover",
 892      IDR_MEDIAPLAYER_FULLSCREEN_BUTTON_HOVER,
 893      ui::SCALE_FACTOR_100P},
 894     {"mediaplayerFullscreenDown",
 895      IDR_MEDIAPLAYER_FULLSCREEN_BUTTON_DOWN,
 896      ui::SCALE_FACTOR_100P},
 897     {"mediaplayerCastOff",
 898      IDR_MEDIAPLAYER_CAST_BUTTON_OFF,
 899      ui::SCALE_FACTOR_100P},
 900     {"mediaplayerCastOn",
 901      IDR_MEDIAPLAYER_CAST_BUTTON_ON,
 902      ui::SCALE_FACTOR_100P},
 903     {"mediaplayerFullscreenDisabled",
 904      IDR_MEDIAPLAYER_FULLSCREEN_BUTTON_DISABLED,
 905      ui::SCALE_FACTOR_100P},
 906     {"mediaplayerOverlayCastOff",
 907      IDR_MEDIAPLAYER_OVERLAY_CAST_BUTTON_OFF,
 908      ui::SCALE_FACTOR_100P},
 909     {"mediaplayerOverlayPlay",
 910      IDR_MEDIAPLAYER_OVERLAY_PLAY_BUTTON,
 911      ui::SCALE_FACTOR_100P},
 912     {"panIcon", IDR_PAN_SCROLL_ICON, ui::SCALE_FACTOR_100P},
 913     {"searchCancel", IDR_SEARCH_CANCEL, ui::SCALE_FACTOR_100P},
 914     {"searchCancelPressed", IDR_SEARCH_CANCEL_PRESSED, ui::SCALE_FACTOR_100P},
 915     {"searchMagnifier", IDR_SEARCH_MAGNIFIER, ui::SCALE_FACTOR_100P},
 916     {"searchMagnifierResults",
 917      IDR_SEARCH_MAGNIFIER_RESULTS,
 918      ui::SCALE_FACTOR_100P},
 919     {"textAreaResizeCorner", IDR_TEXTAREA_RESIZER, ui::SCALE_FACTOR_100P},
 920     {"textAreaResizeCorner@2x", IDR_TEXTAREA_RESIZER, ui::SCALE_FACTOR_200P},
 921     {"generatePassword", IDR_PASSWORD_GENERATION_ICON, ui::SCALE_FACTOR_100P},
 922     {"generatePasswordHover",
 923      IDR_PASSWORD_GENERATION_ICON_HOVER,
 924      ui::SCALE_FACTOR_100P},
 925     {"html.css", IDR_UASTYLE_HTML_CSS, ui::SCALE_FACTOR_NONE},
 926     {"quirks.css", IDR_UASTYLE_QUIRKS_CSS, ui::SCALE_FACTOR_NONE},
 927     {"view-source.css", IDR_UASTYLE_VIEW_SOURCE_CSS, ui::SCALE_FACTOR_NONE},
 928     {"themeChromium.css",
 929      IDR_UASTYLE_THEME_CHROMIUM_CSS,
 930      ui::SCALE_FACTOR_NONE},
 931 #if defined(OS_ANDROID)
 932     {"themeChromiumAndroid.css",
 933      IDR_UASTYLE_THEME_CHROMIUM_ANDROID_CSS,
 934      ui::SCALE_FACTOR_NONE},
 935     {"mediaControlsAndroid.css",
 936      IDR_UASTYLE_MEDIA_CONTROLS_ANDROID_CSS,
 937      ui::SCALE_FACTOR_NONE},
 938 #endif
 939 #if !defined(OS_WIN)
 940     {"themeChromiumLinux.css",
 941      IDR_UASTYLE_THEME_CHROMIUM_LINUX_CSS,
 942      ui::SCALE_FACTOR_NONE},
 943 #endif
 944     {"themeChromiumSkia.css",
 945      IDR_UASTYLE_THEME_CHROMIUM_SKIA_CSS,
 946      ui::SCALE_FACTOR_NONE},
 947     {"themeInputMultipleFields.css",
 948      IDR_UASTYLE_THEME_INPUT_MULTIPLE_FIELDS_CSS,
 949      ui::SCALE_FACTOR_NONE},
 950 #if defined(OS_MACOSX)
 951     {"themeMac.css", IDR_UASTYLE_THEME_MAC_CSS, ui::SCALE_FACTOR_NONE},
 952 #endif
 953     {"themeWin.css", IDR_UASTYLE_THEME_WIN_CSS, ui::SCALE_FACTOR_NONE},
 954     {"themeWinQuirks.css",
 955      IDR_UASTYLE_THEME_WIN_QUIRKS_CSS,
 956      ui::SCALE_FACTOR_NONE},
 957     {"svg.css", IDR_UASTYLE_SVG_CSS, ui::SCALE_FACTOR_NONE},
 958     {"mathml.css", IDR_UASTYLE_MATHML_CSS, ui::SCALE_FACTOR_NONE},
 959     {"mediaControls.css",
 960      IDR_UASTYLE_MEDIA_CONTROLS_CSS,
 961      ui::SCALE_FACTOR_NONE},
 962     {"fullscreen.css", IDR_UASTYLE_FULLSCREEN_CSS, ui::SCALE_FACTOR_NONE},
 963     {"xhtmlmp.css", IDR_UASTYLE_XHTMLMP_CSS, ui::SCALE_FACTOR_NONE},
 964     {"viewportAndroid.css",
 965      IDR_UASTYLE_VIEWPORT_ANDROID_CSS,
 966      ui::SCALE_FACTOR_NONE},
 967     {"InspectorOverlayPage.html",
 968      IDR_INSPECTOR_OVERLAY_PAGE_HTML,
 969      ui::SCALE_FACTOR_NONE},
 970     {"InjectedScriptSource.js",
 971      IDR_INSPECTOR_INJECTED_SCRIPT_SOURCE_JS,
 972      ui::SCALE_FACTOR_NONE},
 973     {"DebuggerScriptSource.js",
 974      IDR_INSPECTOR_DEBUGGER_SCRIPT_SOURCE_JS,
 975      ui::SCALE_FACTOR_NONE},
 976     {"DocumentExecCommand.js",
 977      IDR_PRIVATE_SCRIPT_DOCUMENTEXECCOMMAND_JS,
 978      ui::SCALE_FACTOR_NONE},
 979     {"DocumentXMLTreeViewer.css",
 980      IDR_PRIVATE_SCRIPT_DOCUMENTXMLTREEVIEWER_CSS,
 981      ui::SCALE_FACTOR_NONE},
 982     {"DocumentXMLTreeViewer.js",
 983      IDR_PRIVATE_SCRIPT_DOCUMENTXMLTREEVIEWER_JS,
 984      ui::SCALE_FACTOR_NONE},
 985     {"HTMLMarqueeElement.js",
 986      IDR_PRIVATE_SCRIPT_HTMLMARQUEEELEMENT_JS,
 987      ui::SCALE_FACTOR_NONE},
 988     {"PluginPlaceholderElement.js",
 989      IDR_PRIVATE_SCRIPT_PLUGINPLACEHOLDERELEMENT_JS,
 990      ui::SCALE_FACTOR_NONE},
 991     {"PrivateScriptRunner.js",
 992      IDR_PRIVATE_SCRIPT_PRIVATESCRIPTRUNNER_JS,
 993      ui::SCALE_FACTOR_NONE},
 994 #ifdef IDR_PICKER_COMMON_JS
 995     {"pickerCommon.js", IDR_PICKER_COMMON_JS, ui::SCALE_FACTOR_NONE},
 996     {"pickerCommon.css", IDR_PICKER_COMMON_CSS, ui::SCALE_FACTOR_NONE},
 997     {"calendarPicker.js", IDR_CALENDAR_PICKER_JS, ui::SCALE_FACTOR_NONE},
 998     {"calendarPicker.css", IDR_CALENDAR_PICKER_CSS, ui::SCALE_FACTOR_NONE},
 999     {"listPicker.js", IDR_LIST_PICKER_JS, ui::SCALE_FACTOR_NONE},
1000     {"listPicker.css", IDR_LIST_PICKER_CSS, ui::SCALE_FACTOR_NONE},
1001     {"pickerButton.css", IDR_PICKER_BUTTON_CSS, ui::SCALE_FACTOR_NONE},
1002     {"suggestionPicker.js", IDR_SUGGESTION_PICKER_JS, ui::SCALE_FACTOR_NONE},
1003     {"suggestionPicker.css", IDR_SUGGESTION_PICKER_CSS, ui::SCALE_FACTOR_NONE},
1004     {"colorSuggestionPicker.js",
1005      IDR_COLOR_SUGGESTION_PICKER_JS,
1006      ui::SCALE_FACTOR_NONE},
1007     {"colorSuggestionPicker.css",
1008      IDR_COLOR_SUGGESTION_PICKER_CSS,
1009      ui::SCALE_FACTOR_NONE},
1010 #endif
1011 };
1012
1013 }  // namespace
1014
1015 WebData BlinkPlatformImpl::loadResource(const char* name) {
1016   // Some clients will call into this method with an empty |name| when they have
1017   // optional resources.  For example, the PopupMenuChromium code can have icons
1018   // for some Autofill items but not for others.
1019   if (!strlen(name))
1020     return WebData();
1021
1022   // Check the name prefix to see if it's an audio resource.
1023   if (base::StartsWithASCII(name, "IRC_Composite", true) ||
1024       base::StartsWithASCII(name, "Composite", true))
1025     return loadAudioSpatializationResource(name);
1026
1027   // TODO(flackr): We should use a better than linear search here, a trie would
1028   // be ideal.
1029   for (size_t i = 0; i < arraysize(kDataResources); ++i) {
1030     if (!strcmp(name, kDataResources[i].name)) {
1031       base::StringPiece resource = GetContentClient()->GetDataResource(
1032           kDataResources[i].id, kDataResources[i].scale_factor);
1033       return WebData(resource.data(), resource.size());
1034     }
1035   }
1036
1037   NOTREACHED() << "Unknown image resource " << name;
1038   return WebData();
1039 }
1040
1041 WebString BlinkPlatformImpl::queryLocalizedString(
1042     WebLocalizedString::Name name) {
1043   int message_id = ToMessageID(name);
1044   if (message_id < 0)
1045     return WebString();
1046   return GetContentClient()->GetLocalizedString(message_id);
1047 }
1048
1049 WebString BlinkPlatformImpl::queryLocalizedString(
1050     WebLocalizedString::Name name, int numeric_value) {
1051   return queryLocalizedString(name, base::IntToString16(numeric_value));
1052 }
1053
1054 WebString BlinkPlatformImpl::queryLocalizedString(
1055     WebLocalizedString::Name name, const WebString& value) {
1056   int message_id = ToMessageID(name);
1057   if (message_id < 0)
1058     return WebString();
1059   return ReplaceStringPlaceholders(GetContentClient()->GetLocalizedString(
1060       message_id), value, NULL);
1061 }
1062
1063 WebString BlinkPlatformImpl::queryLocalizedString(
1064     WebLocalizedString::Name name,
1065     const WebString& value1,
1066     const WebString& value2) {
1067   int message_id = ToMessageID(name);
1068   if (message_id < 0)
1069     return WebString();
1070   std::vector<base::string16> values;
1071   values.reserve(2);
1072   values.push_back(value1);
1073   values.push_back(value2);
1074   return ReplaceStringPlaceholders(
1075       GetContentClient()->GetLocalizedString(message_id), values, NULL);
1076 }
1077
1078 double BlinkPlatformImpl::currentTime() {
1079   return base::Time::Now().ToDoubleT();
1080 }
1081
1082 double BlinkPlatformImpl::monotonicallyIncreasingTime() {
1083   return base::TimeTicks::Now().ToInternalValue() /
1084       static_cast<double>(base::Time::kMicrosecondsPerSecond);
1085 }
1086
1087 double BlinkPlatformImpl::systemTraceTime() {
1088   return (base::TraceTicks::Now() - base::TraceTicks()).InSecondsF();
1089 }
1090
1091 void BlinkPlatformImpl::cryptographicallyRandomValues(
1092     unsigned char* buffer, size_t length) {
1093   base::RandBytes(buffer, length);
1094 }
1095
1096 blink::WebGestureCurve* BlinkPlatformImpl::createFlingAnimationCurve(
1097     blink::WebGestureDevice device_source,
1098     const blink::WebFloatPoint& velocity,
1099     const blink::WebSize& cumulative_scroll) {
1100   return ui::WebGestureCurveImpl::CreateFromDefaultPlatformCurve(
1101              gfx::Vector2dF(velocity.x, velocity.y),
1102              gfx::Vector2dF(cumulative_scroll.width, cumulative_scroll.height),
1103              IsMainThread()).release();
1104 }
1105
1106 void BlinkPlatformImpl::didStartWorkerRunLoop() {
1107   WorkerTaskRunner* worker_task_runner = WorkerTaskRunner::Instance();
1108   worker_task_runner->OnWorkerRunLoopStarted();
1109 }
1110
1111 void BlinkPlatformImpl::didStopWorkerRunLoop() {
1112   WorkerTaskRunner* worker_task_runner = WorkerTaskRunner::Instance();
1113   worker_task_runner->OnWorkerRunLoopStopped();
1114 }
1115
1116 blink::WebCrypto* BlinkPlatformImpl::crypto() {
1117   return &web_crypto_;
1118 }
1119
1120 blink::WebGeofencingProvider* BlinkPlatformImpl::geofencingProvider() {
1121   return geofencing_provider_.get();
1122 }
1123
1124 blink::WebBluetooth* BlinkPlatformImpl::bluetooth() {
1125   return bluetooth_.get();
1126 }
1127
1128 blink::WebNotificationManager*
1129 BlinkPlatformImpl::notificationManager() {
1130   if (!thread_safe_sender_.get() || !notification_dispatcher_.get())
1131     return nullptr;
1132
1133   return NotificationManager::ThreadSpecificInstance(
1134       thread_safe_sender_.get(),
1135       main_thread_task_runner_.get(),
1136       notification_dispatcher_.get());
1137 }
1138
1139 blink::WebPushProvider* BlinkPlatformImpl::pushProvider() {
1140   if (!thread_safe_sender_.get() || !push_dispatcher_.get())
1141     return nullptr;
1142
1143   return PushProvider::ThreadSpecificInstance(thread_safe_sender_.get(),
1144                                               push_dispatcher_.get());
1145 }
1146
1147 blink::WebNavigatorConnectProvider*
1148 BlinkPlatformImpl::navigatorConnectProvider() {
1149   if (!thread_safe_sender_.get())
1150     return nullptr;
1151
1152   return NavigatorConnectProvider::ThreadSpecificInstance(
1153       thread_safe_sender_.get(), main_thread_task_runner_);
1154 }
1155
1156 blink::WebPermissionClient* BlinkPlatformImpl::permissionClient() {
1157   if (!permission_client_.get())
1158     return nullptr;
1159
1160   if (IsMainThread())
1161     return permission_client_.get();
1162
1163   return PermissionDispatcherThreadProxy::GetThreadInstance(
1164       main_thread_task_runner_.get(), permission_client_.get());
1165 }
1166
1167 blink::WebSyncProvider* BlinkPlatformImpl::backgroundSyncProvider() {
1168   if (!sync_provider_.get())
1169     return nullptr;
1170
1171   if (IsMainThread())
1172     return sync_provider_.get();
1173
1174   return BackgroundSyncProviderThreadProxy::GetThreadInstance(
1175       main_thread_task_runner_.get(), sync_provider_.get());
1176 }
1177
1178 WebThemeEngine* BlinkPlatformImpl::themeEngine() {
1179   return &native_theme_engine_;
1180 }
1181
1182 WebFallbackThemeEngine* BlinkPlatformImpl::fallbackThemeEngine() {
1183   return &fallback_theme_engine_;
1184 }
1185
1186 blink::Platform::FileHandle BlinkPlatformImpl::databaseOpenFile(
1187     const blink::WebString& vfs_file_name, int desired_flags) {
1188 #if defined(OS_WIN)
1189   return INVALID_HANDLE_VALUE;
1190 #elif defined(OS_POSIX)
1191   return -1;
1192 #endif
1193 }
1194
1195 int BlinkPlatformImpl::databaseDeleteFile(
1196     const blink::WebString& vfs_file_name, bool sync_dir) {
1197   return -1;
1198 }
1199
1200 long BlinkPlatformImpl::databaseGetFileAttributes(
1201     const blink::WebString& vfs_file_name) {
1202   return 0;
1203 }
1204
1205 long long BlinkPlatformImpl::databaseGetFileSize(
1206     const blink::WebString& vfs_file_name) {
1207   return 0;
1208 }
1209
1210 long long BlinkPlatformImpl::databaseGetSpaceAvailableForOrigin(
1211     const blink::WebString& origin_identifier) {
1212   return 0;
1213 }
1214
1215 bool BlinkPlatformImpl::databaseSetFileSize(
1216     const blink::WebString& vfs_file_name, long long size) {
1217   return false;
1218 }
1219
1220 blink::WebString BlinkPlatformImpl::signedPublicKeyAndChallengeString(
1221     unsigned key_size_index,
1222     const blink::WebString& challenge,
1223     const blink::WebURL& url) {
1224   return blink::WebString("");
1225 }
1226
1227 static scoped_ptr<base::ProcessMetrics> CurrentProcessMetrics() {
1228   using base::ProcessMetrics;
1229 #if defined(OS_MACOSX)
1230   return scoped_ptr<ProcessMetrics>(
1231       // The default port provider is sufficient to get data for the current
1232       // process.
1233       ProcessMetrics::CreateProcessMetrics(base::GetCurrentProcessHandle(),
1234                                            NULL));
1235 #else
1236   return scoped_ptr<ProcessMetrics>(
1237       ProcessMetrics::CreateProcessMetrics(base::GetCurrentProcessHandle()));
1238 #endif
1239 }
1240
1241 static size_t getMemoryUsageMB(bool bypass_cache) {
1242   size_t current_mem_usage = 0;
1243   MemoryUsageCache* mem_usage_cache_singleton = MemoryUsageCache::GetInstance();
1244   if (!bypass_cache &&
1245       mem_usage_cache_singleton->IsCachedValueValid(&current_mem_usage))
1246     return current_mem_usage;
1247
1248   current_mem_usage = GetMemoryUsageKB() >> 10;
1249   mem_usage_cache_singleton->SetMemoryValue(current_mem_usage);
1250   return current_mem_usage;
1251 }
1252
1253 size_t BlinkPlatformImpl::memoryUsageMB() {
1254   return getMemoryUsageMB(false);
1255 }
1256
1257 size_t BlinkPlatformImpl::actualMemoryUsageMB() {
1258   return getMemoryUsageMB(true);
1259 }
1260
1261 size_t BlinkPlatformImpl::physicalMemoryMB() {
1262   return static_cast<size_t>(base::SysInfo::AmountOfPhysicalMemoryMB());
1263 }
1264
1265 size_t BlinkPlatformImpl::virtualMemoryLimitMB() {
1266   return static_cast<size_t>(base::SysInfo::AmountOfVirtualMemoryMB());
1267 }
1268
1269 size_t BlinkPlatformImpl::numberOfProcessors() {
1270   return static_cast<size_t>(base::SysInfo::NumberOfProcessors());
1271 }
1272
1273 bool BlinkPlatformImpl::processMemorySizesInBytes(
1274     size_t* private_bytes,
1275     size_t* shared_bytes) {
1276   return CurrentProcessMetrics()->GetMemoryBytes(private_bytes, shared_bytes);
1277 }
1278
1279 bool BlinkPlatformImpl::memoryAllocatorWasteInBytes(size_t* size) {
1280   return base::allocator::GetAllocatorWasteSize(size);
1281 }
1282
1283 blink::WebDiscardableMemory*
1284 BlinkPlatformImpl::allocateAndLockDiscardableMemory(size_t bytes) {
1285   return content::WebDiscardableMemoryImpl::CreateLockedMemory(bytes).release();
1286 }
1287
1288 size_t BlinkPlatformImpl::maxDecodedImageBytes() {
1289 #if defined(OS_ANDROID)
1290   if (base::SysInfo::IsLowEndDevice()) {
1291     // Limit image decoded size to 3M pixels on low end devices.
1292     // 4 is maximum number of bytes per pixel.
1293     return 3 * 1024 * 1024 * 4;
1294   }
1295   // For other devices, limit decoded image size based on the amount of physical
1296   // memory.
1297   // In some cases all physical memory is not accessible by Chromium, as it can
1298   // be reserved for direct use by certain hardware. Thus, we set the limit so
1299   // that 1.6GB of reported physical memory on a 2GB device is enough to set the
1300   // limit at 16M pixels, which is a desirable value since 4K*4K is a relatively
1301   // common texture size.
1302   return base::SysInfo::AmountOfPhysicalMemory() / 25;
1303 #else
1304   return noDecodedImageByteLimit;
1305 #endif
1306 }
1307
1308 uint32_t BlinkPlatformImpl::getUniqueIdForProcess() {
1309   // TODO(rickyz): Replace this with base::GetUniqueIdForProcess when that's
1310   // ready.
1311   return base::trace_event::TraceLog::GetInstance()->process_id();
1312 }
1313
1314 scoped_refptr<base::SingleThreadTaskRunner>
1315 BlinkPlatformImpl::MainTaskRunnerForCurrentThread() {
1316   if (main_thread_task_runner_.get() &&
1317       main_thread_task_runner_->BelongsToCurrentThread()) {
1318     return main_thread_task_runner_;
1319   } else {
1320     return base::ThreadTaskRunnerHandle::Get();
1321   }
1322 }
1323
1324 bool BlinkPlatformImpl::IsMainThread() const {
1325   return main_thread_task_runner_.get() &&
1326          main_thread_task_runner_->BelongsToCurrentThread();
1327 }
1328
1329 WebString BlinkPlatformImpl::domCodeStringFromEnum(int dom_code) {
1330   return WebString::fromUTF8(ui::KeycodeConverter::DomCodeToCodeString(
1331       static_cast<ui::DomCode>(dom_code)));
1332 }
1333
1334 int BlinkPlatformImpl::domEnumFromCodeString(const WebString& code) {
1335   return static_cast<int>(ui::KeycodeConverter::CodeStringToDomCode(
1336       code.utf8().data()));
1337 }
1338
1339 }  // namespace content