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/child_thread_impl.h"
  43 #include "content/child/content_child_helpers.h"
  44 #include "content/child/geofencing/web_geofencing_provider_impl.h"
  45 #include "content/child/navigator_connect/service_port_provider.h"
  46 #include "content/child/notifications/notification_dispatcher.h"
  47 #include "content/child/notifications/notification_manager.h"
  48 #include "content/child/permissions/permission_dispatcher.h"
  49 #include "content/child/permissions/permission_dispatcher_thread_proxy.h"
  50 #include "content/child/push_messaging/push_dispatcher.h"
  51 #include "content/child/push_messaging/push_provider.h"
  52 #include "content/child/thread_safe_sender.h"
  53 #include "content/child/web_discardable_memory_impl.h"
  54 #include "content/child/web_memory_dump_provider_adapter.h"
  55 #include "content/child/web_process_memory_dump_impl.h"
  56 #include "content/child/web_url_loader_impl.h"
  57 #include "content/child/web_url_request_util.h"
  58 #include "content/child/websocket_bridge.h"
  59 #include "content/child/worker_task_runner.h"
  60 #include "content/public/common/content_client.h"
  61 #include "net/base/data_url.h"
  62 #include "net/base/ip_address_number.h"
  63 #include "net/base/net_errors.h"
  64 #include "net/base/port_util.h"
  65 #include "third_party/WebKit/public/platform/WebConvertableToTraceFormat.h"
  66 #include "third_party/WebKit/public/platform/WebData.h"
  67 #include "third_party/WebKit/public/platform/WebFloatPoint.h"
  68 #include "third_party/WebKit/public/platform/WebMemoryDumpProvider.h"
  69 #include "third_party/WebKit/public/platform/WebString.h"
  70 #include "third_party/WebKit/public/platform/WebURL.h"
  71 #include "third_party/WebKit/public/platform/WebWaitableEvent.h"
  72 #include "third_party/WebKit/public/web/WebSecurityOrigin.h"
  73 #include "ui/base/layout.h"
  74 #include "ui/events/gestures/blink/web_gesture_curve_impl.h"
  75 #include "ui/events/keycodes/dom/keycode_converter.h"
  76
  77 using blink::WebData;
  78 using blink::WebFallbackThemeEngine;
  79 using blink::WebLocalizedString;
  80 using blink::WebString;
  81 using blink::WebThemeEngine;
  82 using blink::WebURL;
  83 using blink::WebURLError;
  84 using blink::WebURLLoader;
  85
  86 namespace content {
  87
  88 namespace {
  89
  90 class WebWaitableEventImpl : public blink::WebWaitableEvent {
  91  public:
  92   WebWaitableEventImpl(ResetPolicy policy, InitialState state) {
  93     bool manual_reset = policy == ResetPolicy::Manual;
  94     bool initially_signaled = state == InitialState::Signaled;
  95     impl_.reset(new base::WaitableEvent(manual_reset, initially_signaled));
  96   }
  97   virtual ~WebWaitableEventImpl() {}
  98
  99   virtual void reset() { impl_->Reset(); }
 100   virtual void wait() { impl_->Wait(); }
 101   virtual void signal() { impl_->Signal(); }
 102
 103   base::WaitableEvent* impl() {
 104     return impl_.get();
 105   }
 106
 107  private:
 108   scoped_ptr<base::WaitableEvent> impl_;
 109   DISALLOW_COPY_AND_ASSIGN(WebWaitableEventImpl);
 110 };
 111
 112 // A simple class to cache the memory usage for a given amount of time.
 113 class MemoryUsageCache {
 114  public:
 115   // Retrieves the Singleton.
 116   static MemoryUsageCache* GetInstance() {
 117     return Singleton<MemoryUsageCache>::get();
 118   }
 119
 120   MemoryUsageCache() : memory_value_(0) { Init(); }
 121   ~MemoryUsageCache() {}
 122
 123   void Init() {
 124     const unsigned int kCacheSeconds = 1;
 125     cache_valid_time_ = base::TimeDelta::FromSeconds(kCacheSeconds);
 126   }
 127
 128   // Returns true if the cached value is fresh.
 129   // Returns false if the cached value is stale, or if |cached_value| is NULL.
 130   bool IsCachedValueValid(size_t* cached_value) {
 131     base::AutoLock scoped_lock(lock_);
 132     if (!cached_value)
 133       return false;
 134     if (base::Time::Now() - last_updated_time_ > cache_valid_time_)
 135       return false;
 136     *cached_value = memory_value_;
 137     return true;
 138   };
 139
 140   // Setter for |memory_value_|, refreshes |last_updated_time_|.
 141   void SetMemoryValue(const size_t value) {
 142     base::AutoLock scoped_lock(lock_);
 143     memory_value_ = value;
 144     last_updated_time_ = base::Time::Now();
 145   }
 146
 147  private:
 148   // The cached memory value.
 149   size_t memory_value_;
 150
 151   // How long the cached value should remain valid.
 152   base::TimeDelta cache_valid_time_;
 153
 154   // The last time the cached value was updated.
 155   base::Time last_updated_time_;
 156
 157   base::Lock lock_;
 158 };
 159
 160 class ConvertableToTraceFormatWrapper
 161     : public base::trace_event::ConvertableToTraceFormat {
 162  public:
 163   // We move a reference pointer from |convertable| to |convertable_|,
 164   // rather than copying, for thread safety. https://crbug.com/478149
 165   explicit ConvertableToTraceFormatWrapper(
 166       blink::WebConvertableToTraceFormat& convertable) {
 167     convertable_.moveFrom(convertable);
 168   }
 169   void AppendAsTraceFormat(std::string* out) const override {
 170     *out += convertable_.asTraceFormat().utf8();
 171   }
 172
 173  private:
 174   ~ConvertableToTraceFormatWrapper() override {}
 175
 176   blink::WebConvertableToTraceFormat convertable_;
 177 };
 178
 179 }  // namespace
 180
 181 static int ToMessageID(WebLocalizedString::Name name) {
 182   switch (name) {
 183     case WebLocalizedString::AXAMPMFieldText:
 184       return IDS_AX_AM_PM_FIELD_TEXT;
 185     case WebLocalizedString::AXButtonActionVerb:
 186       return IDS_AX_BUTTON_ACTION_VERB;
 187     case WebLocalizedString::AXCalendarShowMonthSelector:
 188       return IDS_AX_CALENDAR_SHOW_MONTH_SELECTOR;
 189     case WebLocalizedString::AXCalendarShowNextMonth:
 190       return IDS_AX_CALENDAR_SHOW_NEXT_MONTH;
 191     case WebLocalizedString::AXCalendarShowPreviousMonth:
 192       return IDS_AX_CALENDAR_SHOW_PREVIOUS_MONTH;
 193     case WebLocalizedString::AXCalendarWeekDescription:
 194       return IDS_AX_CALENDAR_WEEK_DESCRIPTION;
 195     case WebLocalizedString::AXCheckedCheckBoxActionVerb:
 196       return IDS_AX_CHECKED_CHECK_BOX_ACTION_VERB;
 197     case WebLocalizedString::AXDateTimeFieldEmptyValueText:
 198       return IDS_AX_DATE_TIME_FIELD_EMPTY_VALUE_TEXT;
 199     case WebLocalizedString::AXDayOfMonthFieldText:
 200       return IDS_AX_DAY_OF_MONTH_FIELD_TEXT;
 201     case WebLocalizedString::AXHeadingText:
 202       return IDS_AX_ROLE_HEADING;
 203     case WebLocalizedString::AXHourFieldText:
 204       return IDS_AX_HOUR_FIELD_TEXT;
 205     case WebLocalizedString::AXImageMapText:
 206       return IDS_AX_ROLE_IMAGE_MAP;
 207     case WebLocalizedString::AXLinkActionVerb:
 208       return IDS_AX_LINK_ACTION_VERB;
 209     case WebLocalizedString::AXLinkText:
 210       return IDS_AX_ROLE_LINK;
 211     case WebLocalizedString::AXListMarkerText:
 212       return IDS_AX_ROLE_LIST_MARKER;
 213     case WebLocalizedString::AXMediaDefault:
 214       return IDS_AX_MEDIA_DEFAULT;
 215     case WebLocalizedString::AXMediaAudioElement:
 216       return IDS_AX_MEDIA_AUDIO_ELEMENT;
 217     case WebLocalizedString::AXMediaVideoElement:
 218       return IDS_AX_MEDIA_VIDEO_ELEMENT;
 219     case WebLocalizedString::AXMediaMuteButton:
 220       return IDS_AX_MEDIA_MUTE_BUTTON;
 221     case WebLocalizedString::AXMediaUnMuteButton:
 222       return IDS_AX_MEDIA_UNMUTE_BUTTON;
 223     case WebLocalizedString::AXMediaPlayButton:
 224       return IDS_AX_MEDIA_PLAY_BUTTON;
 225     case WebLocalizedString::AXMediaPauseButton:
 226       return IDS_AX_MEDIA_PAUSE_BUTTON;
 227     case WebLocalizedString::AXMediaSlider:
 228       return IDS_AX_MEDIA_SLIDER;
 229     case WebLocalizedString::AXMediaSliderThumb:
 230       return IDS_AX_MEDIA_SLIDER_THUMB;
 231     case WebLocalizedString::AXMediaCurrentTimeDisplay:
 232       return IDS_AX_MEDIA_CURRENT_TIME_DISPLAY;
 233     case WebLocalizedString::AXMediaTimeRemainingDisplay:
 234       return IDS_AX_MEDIA_TIME_REMAINING_DISPLAY;
 235     case WebLocalizedString::AXMediaStatusDisplay:
 236       return IDS_AX_MEDIA_STATUS_DISPLAY;
 237     case WebLocalizedString::AXMediaEnterFullscreenButton:
 238       return IDS_AX_MEDIA_ENTER_FULL_SCREEN_BUTTON;
 239     case WebLocalizedString::AXMediaExitFullscreenButton:
 240       return IDS_AX_MEDIA_EXIT_FULL_SCREEN_BUTTON;
 241     case WebLocalizedString::AXMediaShowClosedCaptionsButton:
 242       return IDS_AX_MEDIA_SHOW_CLOSED_CAPTIONS_BUTTON;
 243     case WebLocalizedString::AXMediaHideClosedCaptionsButton:
 244       return IDS_AX_MEDIA_HIDE_CLOSED_CAPTIONS_BUTTON;
 245     case WebLocalizedString::AxMediaCastOffButton:
 246       return IDS_AX_MEDIA_CAST_OFF_BUTTON;
 247     case WebLocalizedString::AxMediaCastOnButton:
 248       return IDS_AX_MEDIA_CAST_ON_BUTTON;
 249     case WebLocalizedString::AXMediaAudioElementHelp:
 250       return IDS_AX_MEDIA_AUDIO_ELEMENT_HELP;
 251     case WebLocalizedString::AXMediaVideoElementHelp:
 252       return IDS_AX_MEDIA_VIDEO_ELEMENT_HELP;
 253     case WebLocalizedString::AXMediaMuteButtonHelp:
 254       return IDS_AX_MEDIA_MUTE_BUTTON_HELP;
 255     case WebLocalizedString::AXMediaUnMuteButtonHelp:
 256       return IDS_AX_MEDIA_UNMUTE_BUTTON_HELP;
 257     case WebLocalizedString::AXMediaPlayButtonHelp:
 258       return IDS_AX_MEDIA_PLAY_BUTTON_HELP;
 259     case WebLocalizedString::AXMediaPauseButtonHelp:
 260       return IDS_AX_MEDIA_PAUSE_BUTTON_HELP;
 261     case WebLocalizedString::AXMediaAudioSliderHelp:
 262       return IDS_AX_MEDIA_AUDIO_SLIDER_HELP;
 263     case WebLocalizedString::AXMediaVideoSliderHelp:
 264       return IDS_AX_MEDIA_VIDEO_SLIDER_HELP;
 265     case WebLocalizedString::AXMediaSliderThumbHelp:
 266       return IDS_AX_MEDIA_SLIDER_THUMB_HELP;
 267     case WebLocalizedString::AXMediaCurrentTimeDisplayHelp:
 268       return IDS_AX_MEDIA_CURRENT_TIME_DISPLAY_HELP;
 269     case WebLocalizedString::AXMediaTimeRemainingDisplayHelp:
 270       return IDS_AX_MEDIA_TIME_REMAINING_DISPLAY_HELP;
 271     case WebLocalizedString::AXMediaStatusDisplayHelp:
 272       return IDS_AX_MEDIA_STATUS_DISPLAY_HELP;
 273     case WebLocalizedString::AXMediaEnterFullscreenButtonHelp:
 274       return IDS_AX_MEDIA_ENTER_FULL_SCREEN_BUTTON_HELP;
 275     case WebLocalizedString::AXMediaExitFullscreenButtonHelp:
 276       return IDS_AX_MEDIA_EXIT_FULL_SCREEN_BUTTON_HELP;
 277     case WebLocalizedString::AXMediaShowClosedCaptionsButtonHelp:
 278       return IDS_AX_MEDIA_SHOW_CLOSED_CAPTIONS_BUTTON_HELP;
 279     case WebLocalizedString::AXMediaHideClosedCaptionsButtonHelp:
 280       return IDS_AX_MEDIA_HIDE_CLOSED_CAPTIONS_BUTTON_HELP;
 281     case WebLocalizedString::AxMediaCastOffButtonHelp:
 282       return IDS_AX_MEDIA_CAST_OFF_BUTTON_HELP;
 283     case WebLocalizedString::AxMediaCastOnButtonHelp:
 284       return IDS_AX_MEDIA_CAST_ON_BUTTON_HELP;
 285     case WebLocalizedString::AXMillisecondFieldText:
 286       return IDS_AX_MILLISECOND_FIELD_TEXT;
 287     case WebLocalizedString::AXMinuteFieldText:
 288       return IDS_AX_MINUTE_FIELD_TEXT;
 289     case WebLocalizedString::AXMonthFieldText:
 290       return IDS_AX_MONTH_FIELD_TEXT;
 291     case WebLocalizedString::AXRadioButtonActionVerb:
 292       return IDS_AX_RADIO_BUTTON_ACTION_VERB;
 293     case WebLocalizedString::AXSecondFieldText:
 294       return IDS_AX_SECOND_FIELD_TEXT;
 295     case WebLocalizedString::AXTextFieldActionVerb:
 296       return IDS_AX_TEXT_FIELD_ACTION_VERB;
 297     case WebLocalizedString::AXUncheckedCheckBoxActionVerb:
 298       return IDS_AX_UNCHECKED_CHECK_BOX_ACTION_VERB;
 299     case WebLocalizedString::AXWebAreaText:
 300       return IDS_AX_ROLE_WEB_AREA;
 301     case WebLocalizedString::AXWeekOfYearFieldText:
 302       return IDS_AX_WEEK_OF_YEAR_FIELD_TEXT;
 303     case WebLocalizedString::AXYearFieldText:
 304       return IDS_AX_YEAR_FIELD_TEXT;
 305     case WebLocalizedString::CalendarClear:
 306       return IDS_FORM_CALENDAR_CLEAR;
 307     case WebLocalizedString::CalendarToday:
 308       return IDS_FORM_CALENDAR_TODAY;
 309     case WebLocalizedString::DateFormatDayInMonthLabel:
 310       return IDS_FORM_DATE_FORMAT_DAY_IN_MONTH;
 311     case WebLocalizedString::DateFormatMonthLabel:
 312       return IDS_FORM_DATE_FORMAT_MONTH;
 313     case WebLocalizedString::DateFormatYearLabel:
 314       return IDS_FORM_DATE_FORMAT_YEAR;
 315     case WebLocalizedString::DetailsLabel:
 316       return IDS_DETAILS_WITHOUT_SUMMARY_LABEL;
 317     case WebLocalizedString::FileButtonChooseFileLabel:
 318       return IDS_FORM_FILE_BUTTON_LABEL;
 319     case WebLocalizedString::FileButtonChooseMultipleFilesLabel:
 320       return IDS_FORM_MULTIPLE_FILES_BUTTON_LABEL;
 321     case WebLocalizedString::FileButtonNoFileSelectedLabel:
 322       return IDS_FORM_FILE_NO_FILE_LABEL;
 323     case WebLocalizedString::InputElementAltText:
 324       return IDS_FORM_INPUT_ALT;
 325     case WebLocalizedString::KeygenMenuHighGradeKeySize:
 326       return IDS_KEYGEN_HIGH_GRADE_KEY;
 327     case WebLocalizedString::KeygenMenuMediumGradeKeySize:
 328       return IDS_KEYGEN_MED_GRADE_KEY;
 329     case WebLocalizedString::MissingPluginText:
 330       return IDS_PLUGIN_INITIALIZATION_ERROR;
 331     case WebLocalizedString::MultipleFileUploadText:
 332       return IDS_FORM_FILE_MULTIPLE_UPLOAD;
 333     case WebLocalizedString::OtherColorLabel:
 334       return IDS_FORM_OTHER_COLOR_LABEL;
 335     case WebLocalizedString::OtherDateLabel:
 336         return IDS_FORM_OTHER_DATE_LABEL;
 337     case WebLocalizedString::OtherMonthLabel:
 338       return IDS_FORM_OTHER_MONTH_LABEL;
 339     case WebLocalizedString::OtherTimeLabel:
 340       return IDS_FORM_OTHER_TIME_LABEL;
 341     case WebLocalizedString::OtherWeekLabel:
 342       return IDS_FORM_OTHER_WEEK_LABEL;
 343     case WebLocalizedString::PlaceholderForDayOfMonthField:
 344       return IDS_FORM_PLACEHOLDER_FOR_DAY_OF_MONTH_FIELD;
 345     case WebLocalizedString::PlaceholderForMonthField:
 346       return IDS_FORM_PLACEHOLDER_FOR_MONTH_FIELD;
 347     case WebLocalizedString::PlaceholderForYearField:
 348       return IDS_FORM_PLACEHOLDER_FOR_YEAR_FIELD;
 349     case WebLocalizedString::ResetButtonDefaultLabel:
 350       return IDS_FORM_RESET_LABEL;
 351     case WebLocalizedString::SearchableIndexIntroduction:
 352       return IDS_SEARCHABLE_INDEX_INTRO;
 353     case WebLocalizedString::SearchMenuClearRecentSearchesText:
 354       return IDS_RECENT_SEARCHES_CLEAR;
 355     case WebLocalizedString::SearchMenuNoRecentSearchesText:
 356       return IDS_RECENT_SEARCHES_NONE;
 357     case WebLocalizedString::SearchMenuRecentSearchesText:
 358       return IDS_RECENT_SEARCHES;
 359     case WebLocalizedString::SelectMenuListText:
 360       return IDS_FORM_SELECT_MENU_LIST_TEXT;
 361     case WebLocalizedString::SubmitButtonDefaultLabel:
 362       return IDS_FORM_SUBMIT_LABEL;
 363     case WebLocalizedString::ThisMonthButtonLabel:
 364       return IDS_FORM_THIS_MONTH_LABEL;
 365     case WebLocalizedString::ThisWeekButtonLabel:
 366       return IDS_FORM_THIS_WEEK_LABEL;
 367     case WebLocalizedString::ValidationBadInputForDateTime:
 368       return IDS_FORM_VALIDATION_BAD_INPUT_DATETIME;
 369     case WebLocalizedString::ValidationBadInputForNumber:
 370       return IDS_FORM_VALIDATION_BAD_INPUT_NUMBER;
 371     case WebLocalizedString::ValidationPatternMismatch:
 372       return IDS_FORM_VALIDATION_PATTERN_MISMATCH;
 373     case WebLocalizedString::ValidationRangeOverflow:
 374       return IDS_FORM_VALIDATION_RANGE_OVERFLOW;
 375     case WebLocalizedString::ValidationRangeOverflowDateTime:
 376       return IDS_FORM_VALIDATION_RANGE_OVERFLOW_DATETIME;
 377     case WebLocalizedString::ValidationRangeUnderflow:
 378       return IDS_FORM_VALIDATION_RANGE_UNDERFLOW;
 379     case WebLocalizedString::ValidationRangeUnderflowDateTime:
 380       return IDS_FORM_VALIDATION_RANGE_UNDERFLOW_DATETIME;
 381     case WebLocalizedString::ValidationStepMismatch:
 382       return IDS_FORM_VALIDATION_STEP_MISMATCH;
 383     case WebLocalizedString::ValidationStepMismatchCloseToLimit:
 384       return IDS_FORM_VALIDATION_STEP_MISMATCH_CLOSE_TO_LIMIT;
 385     case WebLocalizedString::ValidationTooLong:
 386       return IDS_FORM_VALIDATION_TOO_LONG;
 387     case WebLocalizedString::ValidationTooShort:
 388       return IDS_FORM_VALIDATION_TOO_SHORT;
 389     case WebLocalizedString::ValidationTypeMismatch:
 390       return IDS_FORM_VALIDATION_TYPE_MISMATCH;
 391     case WebLocalizedString::ValidationTypeMismatchForEmail:
 392       return IDS_FORM_VALIDATION_TYPE_MISMATCH_EMAIL;
 393     case WebLocalizedString::ValidationTypeMismatchForEmailEmpty:
 394       return IDS_FORM_VALIDATION_TYPE_MISMATCH_EMAIL_EMPTY;
 395     case WebLocalizedString::ValidationTypeMismatchForEmailEmptyDomain:
 396       return IDS_FORM_VALIDATION_TYPE_MISMATCH_EMAIL_EMPTY_DOMAIN;
 397     case WebLocalizedString::ValidationTypeMismatchForEmailEmptyLocal:
 398       return IDS_FORM_VALIDATION_TYPE_MISMATCH_EMAIL_EMPTY_LOCAL;
 399     case WebLocalizedString::ValidationTypeMismatchForEmailInvalidDomain:
 400       return IDS_FORM_VALIDATION_TYPE_MISMATCH_EMAIL_INVALID_DOMAIN;
 401     case WebLocalizedString::ValidationTypeMismatchForEmailInvalidDots:
 402       return IDS_FORM_VALIDATION_TYPE_MISMATCH_EMAIL_INVALID_DOTS;
 403     case WebLocalizedString::ValidationTypeMismatchForEmailInvalidLocal:
 404       return IDS_FORM_VALIDATION_TYPE_MISMATCH_EMAIL_INVALID_LOCAL;
 405     case WebLocalizedString::ValidationTypeMismatchForEmailNoAtSign:
 406       return IDS_FORM_VALIDATION_TYPE_MISMATCH_EMAIL_NO_AT_SIGN;
 407     case WebLocalizedString::ValidationTypeMismatchForMultipleEmail:
 408       return IDS_FORM_VALIDATION_TYPE_MISMATCH_MULTIPLE_EMAIL;
 409     case WebLocalizedString::ValidationTypeMismatchForURL:
 410       return IDS_FORM_VALIDATION_TYPE_MISMATCH_URL;
 411     case WebLocalizedString::ValidationValueMissing:
 412       return IDS_FORM_VALIDATION_VALUE_MISSING;
 413     case WebLocalizedString::ValidationValueMissingForCheckbox:
 414       return IDS_FORM_VALIDATION_VALUE_MISSING_CHECKBOX;
 415     case WebLocalizedString::ValidationValueMissingForFile:
 416       return IDS_FORM_VALIDATION_VALUE_MISSING_FILE;
 417     case WebLocalizedString::ValidationValueMissingForMultipleFile:
 418       return IDS_FORM_VALIDATION_VALUE_MISSING_MULTIPLE_FILE;
 419     case WebLocalizedString::ValidationValueMissingForRadio:
 420       return IDS_FORM_VALIDATION_VALUE_MISSING_RADIO;
 421     case WebLocalizedString::ValidationValueMissingForSelect:
 422       return IDS_FORM_VALIDATION_VALUE_MISSING_SELECT;
 423     case WebLocalizedString::WeekFormatTemplate:
 424       return IDS_FORM_INPUT_WEEK_TEMPLATE;
 425     case WebLocalizedString::WeekNumberLabel:
 426       return IDS_FORM_WEEK_NUMBER_LABEL;
 427     // This "default:" line exists to avoid compile warnings about enum
 428     // coverage when we add a new symbol to WebLocalizedString.h in WebKit.
 429     // After a planned WebKit patch is landed, we need to add a case statement
 430     // for the added symbol here.
 431     default:
 432       break;
 433   }
 434   return -1;
 435 }
 436
 437 // TODO(skyostil): Ensure that we always have an active task runner when
 438 // constructing the platform.
 439 BlinkPlatformImpl::BlinkPlatformImpl()
 440     : BlinkPlatformImpl(base::ThreadTaskRunnerHandle::IsSet()
 441                             ? base::ThreadTaskRunnerHandle::Get()
 442                             : nullptr) {
 443 }
 444
 445 BlinkPlatformImpl::BlinkPlatformImpl(
 446     scoped_refptr<base::SingleThreadTaskRunner> main_thread_task_runner)
 447     : main_thread_task_runner_(main_thread_task_runner) {
 448   InternalInit();
 449 }
 450
 451 void BlinkPlatformImpl::InternalInit() {
 452   // ChildThread may not exist in some tests.
 453   if (ChildThreadImpl::current()) {
 454     geofencing_provider_.reset(new WebGeofencingProviderImpl(
 455         ChildThreadImpl::current()->thread_safe_sender()));
 456     thread_safe_sender_ = ChildThreadImpl::current()->thread_safe_sender();
 457     notification_dispatcher_ =
 458         ChildThreadImpl::current()->notification_dispatcher();
 459     push_dispatcher_ = ChildThreadImpl::current()->push_dispatcher();
 460     permission_client_.reset(new PermissionDispatcher(
 461         ChildThreadImpl::current()->service_registry()));
 462     sync_provider_.reset(new BackgroundSyncProvider(
 463         ChildThreadImpl::current()->service_registry()));
 464   }
 465 }
 466
 467 void BlinkPlatformImpl::UpdateWebThreadTLS(blink::WebThread* thread) {
 468   DCHECK(!current_thread_slot_.Get());
 469   current_thread_slot_.Set(thread);
 470 }
 471
 472 BlinkPlatformImpl::~BlinkPlatformImpl() {
 473 }
 474
 475 WebURLLoader* BlinkPlatformImpl::createURLLoader() {
 476   ChildThreadImpl* child_thread = ChildThreadImpl::current();
 477   // There may be no child thread in RenderViewTests.  These tests can still use
 478   // data URLs to bypass the ResourceDispatcher.
 479   return new WebURLLoaderImpl(
 480       child_thread ? child_thread->resource_dispatcher() : NULL,
 481       MainTaskRunnerForCurrentThread());
 482 }
 483
 484 blink::WebSocketHandle* BlinkPlatformImpl::createWebSocketHandle() {
 485   return new WebSocketBridge;
 486 }
 487
 488 WebString BlinkPlatformImpl::userAgent() {
 489   return WebString::fromUTF8(GetContentClient()->GetUserAgent());
 490 }
 491
 492 WebData BlinkPlatformImpl::parseDataURL(const WebURL& url,
 493                                         WebString& mimetype_out,
 494                                         WebString& charset_out) {
 495   std::string mime_type, char_set, data;
 496   if (net::DataURL::Parse(url, &mime_type, &char_set, &data) &&
 497       mime_util::IsSupportedMimeType(mime_type)) {
 498     mimetype_out = WebString::fromUTF8(mime_type);
 499     charset_out = WebString::fromUTF8(char_set);
 500     return data;
 501   }
 502   return WebData();
 503 }
 504
 505 WebURLError BlinkPlatformImpl::cancelledError(
 506     const WebURL& unreachableURL) const {
 507   return CreateWebURLError(unreachableURL, false, net::ERR_ABORTED);
 508 }
 509
 510 bool BlinkPlatformImpl::isReservedIPAddress(
 511     const blink::WebString& host) const {
 512   net::IPAddressNumber address;
 513   if (!net::ParseURLHostnameToNumber(host.utf8(), &address))
 514     return false;
 515   return net::IsIPAddressReserved(address);
 516 }
 517
 518 bool BlinkPlatformImpl::portAllowed(const blink::WebURL& url) const {
 519   GURL gurl = GURL(url);
 520   // Return true for URLs without a port specified.  This is needed to let
 521   // through non-network schemes that don't go over the network.
 522   if (!gurl.has_port())
 523     return true;
 524   return net::IsPortAllowedForScheme(gurl.EffectiveIntPort(), gurl.scheme());
 525 }
 526
 527 blink::WebThread* BlinkPlatformImpl::createThread(const char* name) {
 528   scheduler::WebThreadImplForWorkerScheduler* thread =
 529       new scheduler::WebThreadImplForWorkerScheduler(name);
 530   thread->TaskRunner()->PostTask(
 531       FROM_HERE, base::Bind(&BlinkPlatformImpl::UpdateWebThreadTLS,
 532                             base::Unretained(this), thread));
 533   return thread;
 534 }
 535
 536 blink::WebThread* BlinkPlatformImpl::currentThread() {
 537   return static_cast<blink::WebThread*>(current_thread_slot_.Get());
 538 }
 539
 540 void BlinkPlatformImpl::yieldCurrentThread() {
 541   base::PlatformThread::YieldCurrentThread();
 542 }
 543
 544 blink::WebWaitableEvent* BlinkPlatformImpl::createWaitableEvent(
 545     blink::WebWaitableEvent::ResetPolicy policy,
 546     blink::WebWaitableEvent::InitialState state) {
 547   return new WebWaitableEventImpl(policy, state);
 548 }
 549
 550 blink::WebWaitableEvent* BlinkPlatformImpl::waitMultipleEvents(
 551     const blink::WebVector<blink::WebWaitableEvent*>& web_events) {
 552   std::vector<base::WaitableEvent*> events;
 553   for (size_t i = 0; i < web_events.size(); ++i)
 554     events.push_back(static_cast<WebWaitableEventImpl*>(web_events[i])->impl());
 555   size_t idx = base::WaitableEvent::WaitMany(
 556       vector_as_array(&events), events.size());
 557   DCHECK_LT(idx, web_events.size());
 558   return web_events[idx];
 559 }
 560
 561 void BlinkPlatformImpl::decrementStatsCounter(const char* name) {
 562 }
 563
 564 void BlinkPlatformImpl::incrementStatsCounter(const char* name) {
 565 }
 566
 567 void BlinkPlatformImpl::histogramCustomCounts(
 568     const char* name, int sample, int min, int max, int bucket_count) {
 569   // Copied from histogram macro, but without the static variable caching
 570   // the histogram because name is dynamic.
 571   base::HistogramBase* counter =
 572       base::Histogram::FactoryGet(name, min, max, bucket_count,
 573           base::HistogramBase::kUmaTargetedHistogramFlag);
 574   DCHECK_EQ(name, counter->histogram_name());
 575   counter->Add(sample);
 576 }
 577
 578 void BlinkPlatformImpl::histogramEnumeration(
 579     const char* name, int sample, int boundary_value) {
 580   // Copied from histogram macro, but without the static variable caching
 581   // the histogram because name is dynamic.
 582   base::HistogramBase* counter =
 583       base::LinearHistogram::FactoryGet(name, 1, boundary_value,
 584           boundary_value + 1, base::HistogramBase::kUmaTargetedHistogramFlag);
 585   DCHECK_EQ(name, counter->histogram_name());
 586   counter->Add(sample);
 587 }
 588
 589 void BlinkPlatformImpl::histogramSparse(const char* name, int sample) {
 590   // For sparse histograms, we can use the macro, as it does not incorporate a
 591   // static.
 592   UMA_HISTOGRAM_SPARSE_SLOWLY(name, sample);
 593 }
 594
 595 const unsigned char* BlinkPlatformImpl::getTraceCategoryEnabledFlag(
 596     const char* category_group) {
 597   return TRACE_EVENT_API_GET_CATEGORY_GROUP_ENABLED(category_group);
 598 }
 599
 600 blink::Platform::TraceEventAPIAtomicWord*
 601 BlinkPlatformImpl::getTraceSamplingState(const unsigned thread_bucket) {
 602   switch (thread_bucket) {
 603     case 0:
 604       return reinterpret_cast<blink::Platform::TraceEventAPIAtomicWord*>(
 605           &TRACE_EVENT_API_THREAD_BUCKET(0));
 606     case 1:
 607       return reinterpret_cast<blink::Platform::TraceEventAPIAtomicWord*>(
 608           &TRACE_EVENT_API_THREAD_BUCKET(1));
 609     case 2:
 610       return reinterpret_cast<blink::Platform::TraceEventAPIAtomicWord*>(
 611           &TRACE_EVENT_API_THREAD_BUCKET(2));
 612     default:
 613       NOTREACHED() << "Unknown thread bucket type.";
 614   }
 615   return NULL;
 616 }
 617
 618 static_assert(
 619     sizeof(blink::Platform::TraceEventHandle) ==
 620         sizeof(base::trace_event::TraceEventHandle),
 621     "TraceEventHandle types must be same size");
 622
 623 blink::Platform::TraceEventHandle BlinkPlatformImpl::addTraceEvent(
 624     char phase,
 625     const unsigned char* category_group_enabled,
 626     const char* name,
 627     unsigned long long id,
 628     double timestamp,
 629     int num_args,
 630     const char** arg_names,
 631     const unsigned char* arg_types,
 632     const unsigned long long* arg_values,
 633     unsigned char flags) {
 634   base::TraceTicks timestamp_tt =
 635       base::TraceTicks() + base::TimeDelta::FromSecondsD(timestamp);
 636   base::trace_event::TraceEventHandle handle =
 637       TRACE_EVENT_API_ADD_TRACE_EVENT_WITH_THREAD_ID_AND_TIMESTAMP(
 638           phase, category_group_enabled, name, id, trace_event_internal::kNoId,
 639           base::PlatformThread::CurrentId(), timestamp_tt, num_args, arg_names,
 640           arg_types, arg_values, NULL, flags);
 641   blink::Platform::TraceEventHandle result;
 642   memcpy(&result, &handle, sizeof(result));
 643   return result;
 644 }
 645
 646 blink::Platform::TraceEventHandle BlinkPlatformImpl::addTraceEvent(
 647     char phase,
 648     const unsigned char* category_group_enabled,
 649     const char* name,
 650     unsigned long long id,
 651     double timestamp,
 652     int num_args,
 653     const char** arg_names,
 654     const unsigned char* arg_types,
 655     const unsigned long long* arg_values,
 656     blink::WebConvertableToTraceFormat* convertable_values,
 657     unsigned char flags) {
 658   scoped_refptr<base::trace_event::ConvertableToTraceFormat>
 659       convertable_wrappers[2];
 660   if (convertable_values) {
 661     size_t size = std::min(static_cast<size_t>(num_args),
 662                            arraysize(convertable_wrappers));
 663     for (size_t i = 0; i < size; ++i) {
 664       if (arg_types[i] == TRACE_VALUE_TYPE_CONVERTABLE) {
 665         convertable_wrappers[i] =
 666             new ConvertableToTraceFormatWrapper(convertable_values[i]);
 667       }
 668     }
 669   }
 670   base::TraceTicks timestamp_tt =
 671       base::TraceTicks() + base::TimeDelta::FromSecondsD(timestamp);
 672   base::trace_event::TraceEventHandle handle =
 673       TRACE_EVENT_API_ADD_TRACE_EVENT_WITH_THREAD_ID_AND_TIMESTAMP(
 674           phase, category_group_enabled, name, id, trace_event_internal::kNoId,
 675           base::PlatformThread::CurrentId(), timestamp_tt, num_args, arg_names,
 676           arg_types, arg_values, convertable_wrappers, flags);
 677   blink::Platform::TraceEventHandle result;
 678   memcpy(&result, &handle, sizeof(result));
 679   return result;
 680 }
 681
 682 void BlinkPlatformImpl::updateTraceEventDuration(
 683     const unsigned char* category_group_enabled,
 684     const char* name,
 685     TraceEventHandle handle) {
 686   base::trace_event::TraceEventHandle traceEventHandle;
 687   memcpy(&traceEventHandle, &handle, sizeof(handle));
 688   TRACE_EVENT_API_UPDATE_TRACE_EVENT_DURATION(
 689       category_group_enabled, name, traceEventHandle);
 690 }
 691
 692 void BlinkPlatformImpl::registerMemoryDumpProvider(
 693     blink::WebMemoryDumpProvider* wmdp) {
 694   WebMemoryDumpProviderAdapter* wmdp_adapter =
 695       new WebMemoryDumpProviderAdapter(wmdp);
 696   bool did_insert =
 697       memory_dump_providers_.add(wmdp, make_scoped_ptr(wmdp_adapter)).second;
 698   if (!did_insert)
 699     return;
 700   wmdp_adapter->set_is_registered(true);
 701   base::trace_event::MemoryDumpManager::GetInstance()->RegisterDumpProvider(
 702       wmdp_adapter, base::ThreadTaskRunnerHandle::Get());
 703 }
 704
 705 void BlinkPlatformImpl::unregisterMemoryDumpProvider(
 706     blink::WebMemoryDumpProvider* wmdp) {
 707   scoped_ptr<WebMemoryDumpProviderAdapter> wmdp_adapter =
 708       memory_dump_providers_.take_and_erase(wmdp);
 709   if (!wmdp_adapter)
 710     return;
 711   base::trace_event::MemoryDumpManager::GetInstance()->UnregisterDumpProvider(
 712       wmdp_adapter.get());
 713   wmdp_adapter->set_is_registered(false);
 714 }
 715
 716 blink::WebProcessMemoryDump* BlinkPlatformImpl::createProcessMemoryDump() {
 717   return new WebProcessMemoryDumpImpl();
 718 }
 719
 720 blink::Platform::WebMemoryAllocatorDumpGuid
 721 BlinkPlatformImpl::createWebMemoryAllocatorDumpGuid(
 722     const blink::WebString& guidStr) {
 723   return base::trace_event::MemoryAllocatorDumpGuid(guidStr.utf8()).ToUint64();
 724 }
 725
 726 namespace {
 727
 728 WebData loadAudioSpatializationResource(const char* name) {
 729 #ifdef IDR_AUDIO_SPATIALIZATION_COMPOSITE
 730   if (!strcmp(name, "Composite")) {
 731     base::StringPiece resource = GetContentClient()->GetDataResource(
 732         IDR_AUDIO_SPATIALIZATION_COMPOSITE, ui::SCALE_FACTOR_NONE);
 733     return WebData(resource.data(), resource.size());
 734   }
 735 #endif
 736
 737 #ifdef IDR_AUDIO_SPATIALIZATION_T000_P000
 738   const size_t kExpectedSpatializationNameLength = 31;
 739   if (strlen(name) != kExpectedSpatializationNameLength) {
 740     return WebData();
 741   }
 742
 743   // Extract the azimuth and elevation from the resource name.
 744   int azimuth = 0;
 745   int elevation = 0;
 746   int values_parsed =
 747       sscanf(name, "IRC_Composite_C_R0195_T%3d_P%3d", &azimuth, &elevation);
 748   if (values_parsed != 2) {
 749     return WebData();
 750   }
 751
 752   // The resource index values go through the elevations first, then azimuths.
 753   const int kAngleSpacing = 15;
 754
 755   // 0 <= elevation <= 90 (or 315 <= elevation <= 345)
 756   // in increments of 15 degrees.
 757   int elevation_index =
 758       elevation <= 90 ? elevation / kAngleSpacing :
 759       7 + (elevation - 315) / kAngleSpacing;
 760   bool is_elevation_index_good = 0 <= elevation_index && elevation_index < 10;
 761
 762   // 0 <= azimuth < 360 in increments of 15 degrees.
 763   int azimuth_index = azimuth / kAngleSpacing;
 764   bool is_azimuth_index_good = 0 <= azimuth_index && azimuth_index < 24;
 765
 766   const int kNumberOfElevations = 10;
 767   const int kNumberOfAudioResources = 240;
 768   int resource_index = kNumberOfElevations * azimuth_index + elevation_index;
 769   bool is_resource_index_good = 0 <= resource_index &&
 770       resource_index < kNumberOfAudioResources;
 771
 772   if (is_azimuth_index_good && is_elevation_index_good &&
 773       is_resource_index_good) {
 774     const int kFirstAudioResourceIndex = IDR_AUDIO_SPATIALIZATION_T000_P000;
 775     base::StringPiece resource = GetContentClient()->GetDataResource(
 776         kFirstAudioResourceIndex + resource_index, ui::SCALE_FACTOR_NONE);
 777     return WebData(resource.data(), resource.size());
 778   }
 779 #endif  // IDR_AUDIO_SPATIALIZATION_T000_P000
 780
 781   NOTREACHED();
 782   return WebData();
 783 }
 784
 785 struct DataResource {
 786   const char* name;
 787   int id;
 788   ui::ScaleFactor scale_factor;
 789 };
 790
 791 const DataResource kDataResources[] = {
 792     {"missingImage", IDR_BROKENIMAGE, ui::SCALE_FACTOR_100P},
 793     {"missingImage@2x", IDR_BROKENIMAGE, ui::SCALE_FACTOR_200P},
 794     {"mediaplayerPause", IDR_MEDIAPLAYER_PAUSE_BUTTON, ui::SCALE_FACTOR_100P},
 795     {"mediaplayerPauseNew",
 796      IDR_MEDIAPLAYER_PAUSE_BUTTON_NEW,
 797      ui::SCALE_FACTOR_100P},
 798     {"mediaplayerPauseHover",
 799      IDR_MEDIAPLAYER_PAUSE_BUTTON_HOVER,
 800      ui::SCALE_FACTOR_100P},
 801     {"mediaplayerPauseDown",
 802      IDR_MEDIAPLAYER_PAUSE_BUTTON_DOWN,
 803      ui::SCALE_FACTOR_100P},
 804     {"mediaplayerPlay", IDR_MEDIAPLAYER_PLAY_BUTTON, ui::SCALE_FACTOR_100P},
 805     {"mediaplayerPlayNew",
 806      IDR_MEDIAPLAYER_PLAY_BUTTON_NEW,
 807      ui::SCALE_FACTOR_100P},
 808     {"mediaplayerPlayHover",
 809      IDR_MEDIAPLAYER_PLAY_BUTTON_HOVER,
 810      ui::SCALE_FACTOR_100P},
 811     {"mediaplayerPlayDown",
 812      IDR_MEDIAPLAYER_PLAY_BUTTON_DOWN,
 813      ui::SCALE_FACTOR_100P},
 814     {"mediaplayerPlayDisabled",
 815      IDR_MEDIAPLAYER_PLAY_BUTTON_DISABLED,
 816      ui::SCALE_FACTOR_100P},
 817     {"mediaplayerSoundLevel3",
 818      IDR_MEDIAPLAYER_SOUND_LEVEL3_BUTTON,
 819      ui::SCALE_FACTOR_100P},
 820     {"mediaplayerSoundLevel3New",
 821      IDR_MEDIAPLAYER_SOUND_LEVEL3_BUTTON_NEW,
 822      ui::SCALE_FACTOR_100P},
 823     {"mediaplayerSoundLevel3Hover",
 824      IDR_MEDIAPLAYER_SOUND_LEVEL3_BUTTON_HOVER,
 825      ui::SCALE_FACTOR_100P},
 826     {"mediaplayerSoundLevel3Down",
 827      IDR_MEDIAPLAYER_SOUND_LEVEL3_BUTTON_DOWN,
 828      ui::SCALE_FACTOR_100P},
 829     {"mediaplayerSoundLevel2",
 830      IDR_MEDIAPLAYER_SOUND_LEVEL2_BUTTON,
 831      ui::SCALE_FACTOR_100P},
 832     {"mediaplayerSoundLevel2Hover",
 833      IDR_MEDIAPLAYER_SOUND_LEVEL2_BUTTON_HOVER,
 834      ui::SCALE_FACTOR_100P},
 835     {"mediaplayerSoundLevel2Down",
 836      IDR_MEDIAPLAYER_SOUND_LEVEL2_BUTTON_DOWN,
 837      ui::SCALE_FACTOR_100P},
 838     {"mediaplayerSoundLevel1",
 839      IDR_MEDIAPLAYER_SOUND_LEVEL1_BUTTON,
 840      ui::SCALE_FACTOR_100P},
 841     {"mediaplayerSoundLevel1Hover",
 842      IDR_MEDIAPLAYER_SOUND_LEVEL1_BUTTON_HOVER,
 843      ui::SCALE_FACTOR_100P},
 844     {"mediaplayerSoundLevel1Down",
 845      IDR_MEDIAPLAYER_SOUND_LEVEL1_BUTTON_DOWN,
 846      ui::SCALE_FACTOR_100P},
 847     {"mediaplayerSoundLevel0",
 848      IDR_MEDIAPLAYER_SOUND_LEVEL0_BUTTON,
 849      ui::SCALE_FACTOR_100P},
 850     {"mediaplayerSoundLevel0New",
 851      IDR_MEDIAPLAYER_SOUND_LEVEL0_BUTTON_NEW,
 852      ui::SCALE_FACTOR_100P},
 853     {"mediaplayerSoundLevel0Hover",
 854      IDR_MEDIAPLAYER_SOUND_LEVEL0_BUTTON_HOVER,
 855      ui::SCALE_FACTOR_100P},
 856     {"mediaplayerSoundLevel0Down",
 857      IDR_MEDIAPLAYER_SOUND_LEVEL0_BUTTON_DOWN,
 858      ui::SCALE_FACTOR_100P},
 859     {"mediaplayerSoundDisabled",
 860      IDR_MEDIAPLAYER_SOUND_DISABLED,
 861      ui::SCALE_FACTOR_100P},
 862     {"mediaplayerSliderThumb",
 863      IDR_MEDIAPLAYER_SLIDER_THUMB,
 864      ui::SCALE_FACTOR_100P},
 865     {"mediaplayerSliderThumbNew",
 866      IDR_MEDIAPLAYER_SLIDER_THUMB_NEW,
 867      ui::SCALE_FACTOR_100P},
 868     {"mediaplayerSliderThumbHover",
 869      IDR_MEDIAPLAYER_SLIDER_THUMB_HOVER,
 870      ui::SCALE_FACTOR_100P},
 871     {"mediaplayerSliderThumbDown",
 872      IDR_MEDIAPLAYER_SLIDER_THUMB_DOWN,
 873      ui::SCALE_FACTOR_100P},
 874     {"mediaplayerVolumeSliderThumb",
 875      IDR_MEDIAPLAYER_VOLUME_SLIDER_THUMB,
 876      ui::SCALE_FACTOR_100P},
 877     {"mediaplayerVolumeSliderThumbNew",
 878      IDR_MEDIAPLAYER_VOLUME_SLIDER_THUMB_NEW,
 879      ui::SCALE_FACTOR_100P},
 880     {"mediaplayerVolumeSliderThumbHover",
 881      IDR_MEDIAPLAYER_VOLUME_SLIDER_THUMB_HOVER,
 882      ui::SCALE_FACTOR_100P},
 883     {"mediaplayerVolumeSliderThumbDown",
 884      IDR_MEDIAPLAYER_VOLUME_SLIDER_THUMB_DOWN,
 885      ui::SCALE_FACTOR_100P},
 886     {"mediaplayerVolumeSliderThumbDisabled",
 887      IDR_MEDIAPLAYER_VOLUME_SLIDER_THUMB_DISABLED,
 888      ui::SCALE_FACTOR_100P},
 889     {"mediaplayerClosedCaption",
 890      IDR_MEDIAPLAYER_CLOSEDCAPTION_BUTTON,
 891      ui::SCALE_FACTOR_100P},
 892     {"mediaplayerClosedCaptionNew",
 893      IDR_MEDIAPLAYER_CLOSEDCAPTION_BUTTON_NEW,
 894      ui::SCALE_FACTOR_100P},
 895     {"mediaplayerClosedCaptionHover",
 896      IDR_MEDIAPLAYER_CLOSEDCAPTION_BUTTON_HOVER,
 897      ui::SCALE_FACTOR_100P},
 898     {"mediaplayerClosedCaptionDown",
 899      IDR_MEDIAPLAYER_CLOSEDCAPTION_BUTTON_DOWN,
 900      ui::SCALE_FACTOR_100P},
 901     {"mediaplayerClosedCaptionDisabled",
 902      IDR_MEDIAPLAYER_CLOSEDCAPTION_BUTTON_DISABLED,
 903      ui::SCALE_FACTOR_100P},
 904     {"mediaplayerClosedCaptionDisabledNew",
 905      IDR_MEDIAPLAYER_CLOSEDCAPTION_BUTTON_DISABLED_NEW,
 906      ui::SCALE_FACTOR_100P},
 907     {"mediaplayerEnterFullscreen",
 908      IDR_MEDIAPLAYER_ENTER_FULLSCREEN_BUTTON,
 909      ui::SCALE_FACTOR_100P},
 910     {"mediaplayerExitFullscreen",
 911      IDR_MEDIAPLAYER_EXIT_FULLSCREEN_BUTTON,
 912      ui::SCALE_FACTOR_100P},
 913     {"mediaplayerFullscreen",
 914      IDR_MEDIAPLAYER_FULLSCREEN_BUTTON,
 915      ui::SCALE_FACTOR_100P},
 916     {"mediaplayerFullscreenHover",
 917      IDR_MEDIAPLAYER_FULLSCREEN_BUTTON_HOVER,
 918      ui::SCALE_FACTOR_100P},
 919     {"mediaplayerFullscreenDown",
 920      IDR_MEDIAPLAYER_FULLSCREEN_BUTTON_DOWN,
 921      ui::SCALE_FACTOR_100P},
 922     {"mediaplayerCastOff",
 923      IDR_MEDIAPLAYER_CAST_BUTTON_OFF,
 924      ui::SCALE_FACTOR_100P},
 925     {"mediaplayerCastOn",
 926      IDR_MEDIAPLAYER_CAST_BUTTON_ON,
 927      ui::SCALE_FACTOR_100P},
 928     {"mediaplayerCastOffNew",
 929      IDR_MEDIAPLAYER_CAST_BUTTON_OFF_NEW,
 930      ui::SCALE_FACTOR_100P},
 931     {"mediaplayerCastOnNew",
 932      IDR_MEDIAPLAYER_CAST_BUTTON_ON_NEW,
 933      ui::SCALE_FACTOR_100P},
 934     {"mediaplayerFullscreenDisabled",
 935      IDR_MEDIAPLAYER_FULLSCREEN_BUTTON_DISABLED,
 936      ui::SCALE_FACTOR_100P},
 937     {"mediaplayerOverlayCastOff",
 938      IDR_MEDIAPLAYER_OVERLAY_CAST_BUTTON_OFF,
 939      ui::SCALE_FACTOR_100P},
 940     {"mediaplayerOverlayCastOffNew",
 941      IDR_MEDIAPLAYER_OVERLAY_CAST_BUTTON_OFF_NEW,
 942      ui::SCALE_FACTOR_100P},
 943     {"mediaplayerOverlayPlay",
 944      IDR_MEDIAPLAYER_OVERLAY_PLAY_BUTTON,
 945      ui::SCALE_FACTOR_100P},
 946     {"mediaplayerOverlayPlayNew",
 947      IDR_MEDIAPLAYER_OVERLAY_PLAY_BUTTON_NEW,
 948      ui::SCALE_FACTOR_100P},
 949     {"searchCancel", IDR_SEARCH_CANCEL, ui::SCALE_FACTOR_100P},
 950     {"searchCancelPressed", IDR_SEARCH_CANCEL_PRESSED, ui::SCALE_FACTOR_100P},
 951     {"searchMagnifier", IDR_SEARCH_MAGNIFIER, ui::SCALE_FACTOR_100P},
 952     {"searchMagnifierResults",
 953      IDR_SEARCH_MAGNIFIER_RESULTS,
 954      ui::SCALE_FACTOR_100P},
 955     {"textAreaResizeCorner", IDR_TEXTAREA_RESIZER, ui::SCALE_FACTOR_100P},
 956     {"textAreaResizeCorner@2x", IDR_TEXTAREA_RESIZER, ui::SCALE_FACTOR_200P},
 957     {"generatePassword", IDR_PASSWORD_GENERATION_ICON, ui::SCALE_FACTOR_100P},
 958     {"generatePasswordHover",
 959      IDR_PASSWORD_GENERATION_ICON_HOVER,
 960      ui::SCALE_FACTOR_100P},
 961     {"html.css", IDR_UASTYLE_HTML_CSS, ui::SCALE_FACTOR_NONE},
 962     {"quirks.css", IDR_UASTYLE_QUIRKS_CSS, ui::SCALE_FACTOR_NONE},
 963     {"view-source.css", IDR_UASTYLE_VIEW_SOURCE_CSS, ui::SCALE_FACTOR_NONE},
 964     {"themeChromium.css",
 965      IDR_UASTYLE_THEME_CHROMIUM_CSS,
 966      ui::SCALE_FACTOR_NONE},
 967 #if defined(OS_ANDROID)
 968     {"themeChromiumAndroid.css",
 969      IDR_UASTYLE_THEME_CHROMIUM_ANDROID_CSS,
 970      ui::SCALE_FACTOR_NONE},
 971     {"mediaControlsAndroid.css",
 972      IDR_UASTYLE_MEDIA_CONTROLS_ANDROID_CSS,
 973      ui::SCALE_FACTOR_NONE},
 974     {"mediaControlsAndroidNew.css",
 975      IDR_UASTYLE_MEDIA_CONTROLS_ANDROID_NEW_CSS,
 976      ui::SCALE_FACTOR_NONE},
 977 #endif
 978 #if !defined(OS_WIN)
 979     {"themeChromiumLinux.css",
 980      IDR_UASTYLE_THEME_CHROMIUM_LINUX_CSS,
 981      ui::SCALE_FACTOR_NONE},
 982 #endif
 983     {"themeChromiumSkia.css",
 984      IDR_UASTYLE_THEME_CHROMIUM_SKIA_CSS,
 985      ui::SCALE_FACTOR_NONE},
 986     {"themeInputMultipleFields.css",
 987      IDR_UASTYLE_THEME_INPUT_MULTIPLE_FIELDS_CSS,
 988      ui::SCALE_FACTOR_NONE},
 989 #if defined(OS_MACOSX)
 990     {"themeMac.css", IDR_UASTYLE_THEME_MAC_CSS, ui::SCALE_FACTOR_NONE},
 991 #endif
 992     {"themeWin.css", IDR_UASTYLE_THEME_WIN_CSS, ui::SCALE_FACTOR_NONE},
 993     {"themeWinQuirks.css",
 994      IDR_UASTYLE_THEME_WIN_QUIRKS_CSS,
 995      ui::SCALE_FACTOR_NONE},
 996     {"svg.css", IDR_UASTYLE_SVG_CSS, ui::SCALE_FACTOR_NONE},
 997     {"mathml.css", IDR_UASTYLE_MATHML_CSS, ui::SCALE_FACTOR_NONE},
 998     {"mediaControls.css",
 999      IDR_UASTYLE_MEDIA_CONTROLS_CSS,
1000      ui::SCALE_FACTOR_NONE},
1001     {"mediaControlsNew.css",
1002      IDR_UASTYLE_MEDIA_CONTROLS_NEW_CSS,
1003      ui::SCALE_FACTOR_NONE},
1004     {"fullscreen.css", IDR_UASTYLE_FULLSCREEN_CSS, ui::SCALE_FACTOR_NONE},
1005     {"xhtmlmp.css", IDR_UASTYLE_XHTMLMP_CSS, ui::SCALE_FACTOR_NONE},
1006     {"viewportAndroid.css",
1007      IDR_UASTYLE_VIEWPORT_ANDROID_CSS,
1008      ui::SCALE_FACTOR_NONE},
1009     {"InspectorOverlayPage.html",
1010      IDR_INSPECTOR_OVERLAY_PAGE_HTML,
1011      ui::SCALE_FACTOR_NONE},
1012     {"InjectedScriptSource.js",
1013      IDR_INSPECTOR_INJECTED_SCRIPT_SOURCE_JS,
1014      ui::SCALE_FACTOR_NONE},
1015     {"DebuggerScriptSource.js",
1016      IDR_INSPECTOR_DEBUGGER_SCRIPT_SOURCE_JS,
1017      ui::SCALE_FACTOR_NONE},
1018     {"DocumentExecCommand.js",
1019      IDR_PRIVATE_SCRIPT_DOCUMENTEXECCOMMAND_JS,
1020      ui::SCALE_FACTOR_NONE},
1021     {"DocumentXMLTreeViewer.css",
1022      IDR_PRIVATE_SCRIPT_DOCUMENTXMLTREEVIEWER_CSS,
1023      ui::SCALE_FACTOR_NONE},
1024     {"DocumentXMLTreeViewer.js",
1025      IDR_PRIVATE_SCRIPT_DOCUMENTXMLTREEVIEWER_JS,
1026      ui::SCALE_FACTOR_NONE},
1027     {"HTMLMarqueeElement.js",
1028      IDR_PRIVATE_SCRIPT_HTMLMARQUEEELEMENT_JS,
1029      ui::SCALE_FACTOR_NONE},
1030     {"PluginPlaceholderElement.js",
1031      IDR_PRIVATE_SCRIPT_PLUGINPLACEHOLDERELEMENT_JS,
1032      ui::SCALE_FACTOR_NONE},
1033     {"PrivateScriptRunner.js",
1034      IDR_PRIVATE_SCRIPT_PRIVATESCRIPTRUNNER_JS,
1035      ui::SCALE_FACTOR_NONE},
1036 #ifdef IDR_PICKER_COMMON_JS
1037     {"pickerCommon.js", IDR_PICKER_COMMON_JS, ui::SCALE_FACTOR_NONE},
1038     {"pickerCommon.css", IDR_PICKER_COMMON_CSS, ui::SCALE_FACTOR_NONE},
1039     {"calendarPicker.js", IDR_CALENDAR_PICKER_JS, ui::SCALE_FACTOR_NONE},
1040     {"calendarPicker.css", IDR_CALENDAR_PICKER_CSS, ui::SCALE_FACTOR_NONE},
1041     {"listPicker.js", IDR_LIST_PICKER_JS, ui::SCALE_FACTOR_NONE},
1042     {"listPicker.css", IDR_LIST_PICKER_CSS, ui::SCALE_FACTOR_NONE},
1043     {"pickerButton.css", IDR_PICKER_BUTTON_CSS, ui::SCALE_FACTOR_NONE},
1044     {"suggestionPicker.js", IDR_SUGGESTION_PICKER_JS, ui::SCALE_FACTOR_NONE},
1045     {"suggestionPicker.css", IDR_SUGGESTION_PICKER_CSS, ui::SCALE_FACTOR_NONE},
1046     {"colorSuggestionPicker.js",
1047      IDR_COLOR_SUGGESTION_PICKER_JS,
1048      ui::SCALE_FACTOR_NONE},
1049     {"colorSuggestionPicker.css",
1050      IDR_COLOR_SUGGESTION_PICKER_CSS,
1051      ui::SCALE_FACTOR_NONE},
1052 #endif
1053 };
1054
1055 }  // namespace
1056
1057 WebData BlinkPlatformImpl::loadResource(const char* name) {
1058   // Some clients will call into this method with an empty |name| when they have
1059   // optional resources.  For example, the PopupMenuChromium code can have icons
1060   // for some Autofill items but not for others.
1061   if (!strlen(name))
1062     return WebData();
1063
1064   // Check the name prefix to see if it's an audio resource.
1065   if (base::StartsWith(name, "IRC_Composite", base::CompareCase::SENSITIVE) ||
1066       base::StartsWith(name, "Composite", base::CompareCase::SENSITIVE))
1067     return loadAudioSpatializationResource(name);
1068
1069   // TODO(flackr): We should use a better than linear search here, a trie would
1070   // be ideal.
1071   for (size_t i = 0; i < arraysize(kDataResources); ++i) {
1072     if (!strcmp(name, kDataResources[i].name)) {
1073       base::StringPiece resource = GetContentClient()->GetDataResource(
1074           kDataResources[i].id, kDataResources[i].scale_factor);
1075       return WebData(resource.data(), resource.size());
1076     }
1077   }
1078
1079   NOTREACHED() << "Unknown image resource " << name;
1080   return WebData();
1081 }
1082
1083 WebString BlinkPlatformImpl::queryLocalizedString(
1084     WebLocalizedString::Name name) {
1085   int message_id = ToMessageID(name);
1086   if (message_id < 0)
1087     return WebString();
1088   return GetContentClient()->GetLocalizedString(message_id);
1089 }
1090
1091 WebString BlinkPlatformImpl::queryLocalizedString(
1092     WebLocalizedString::Name name, int numeric_value) {
1093   return queryLocalizedString(name, base::IntToString16(numeric_value));
1094 }
1095
1096 WebString BlinkPlatformImpl::queryLocalizedString(
1097     WebLocalizedString::Name name, const WebString& value) {
1098   int message_id = ToMessageID(name);
1099   if (message_id < 0)
1100     return WebString();
1101   return base::ReplaceStringPlaceholders(
1102       GetContentClient()->GetLocalizedString(message_id), value, NULL);
1103 }
1104
1105 WebString BlinkPlatformImpl::queryLocalizedString(
1106     WebLocalizedString::Name name,
1107     const WebString& value1,
1108     const WebString& value2) {
1109   int message_id = ToMessageID(name);
1110   if (message_id < 0)
1111     return WebString();
1112   std::vector<base::string16> values;
1113   values.reserve(2);
1114   values.push_back(value1);
1115   values.push_back(value2);
1116   return base::ReplaceStringPlaceholders(
1117       GetContentClient()->GetLocalizedString(message_id), values, NULL);
1118 }
1119
1120 double BlinkPlatformImpl::currentTime() {
1121   return base::Time::Now().ToDoubleT();
1122 }
1123
1124 double BlinkPlatformImpl::monotonicallyIncreasingTime() {
1125   return base::TimeTicks::Now().ToInternalValue() /
1126       static_cast<double>(base::Time::kMicrosecondsPerSecond);
1127 }
1128
1129 double BlinkPlatformImpl::systemTraceTime() {
1130   return (base::TraceTicks::Now() - base::TraceTicks()).InSecondsF();
1131 }
1132
1133 void BlinkPlatformImpl::cryptographicallyRandomValues(
1134     unsigned char* buffer, size_t length) {
1135   base::RandBytes(buffer, length);
1136 }
1137
1138 blink::WebGestureCurve* BlinkPlatformImpl::createFlingAnimationCurve(
1139     blink::WebGestureDevice device_source,
1140     const blink::WebFloatPoint& velocity,
1141     const blink::WebSize& cumulative_scroll) {
1142   return ui::WebGestureCurveImpl::CreateFromDefaultPlatformCurve(
1143              gfx::Vector2dF(velocity.x, velocity.y),
1144              gfx::Vector2dF(cumulative_scroll.width, cumulative_scroll.height),
1145              IsMainThread()).release();
1146 }
1147
1148 void BlinkPlatformImpl::didStartWorkerRunLoop() {
1149   WorkerTaskRunner* worker_task_runner = WorkerTaskRunner::Instance();
1150   worker_task_runner->OnWorkerRunLoopStarted();
1151 }
1152
1153 void BlinkPlatformImpl::didStopWorkerRunLoop() {
1154   WorkerTaskRunner* worker_task_runner = WorkerTaskRunner::Instance();
1155   worker_task_runner->OnWorkerRunLoopStopped();
1156 }
1157
1158 blink::WebCrypto* BlinkPlatformImpl::crypto() {
1159   return &web_crypto_;
1160 }
1161
1162 blink::WebGeofencingProvider* BlinkPlatformImpl::geofencingProvider() {
1163   return geofencing_provider_.get();
1164 }
1165
1166 blink::WebNotificationManager*
1167 BlinkPlatformImpl::notificationManager() {
1168   if (!thread_safe_sender_.get() || !notification_dispatcher_.get())
1169     return nullptr;
1170
1171   return NotificationManager::ThreadSpecificInstance(
1172       thread_safe_sender_.get(),
1173       main_thread_task_runner_.get(),
1174       notification_dispatcher_.get());
1175 }
1176
1177 blink::WebPushProvider* BlinkPlatformImpl::pushProvider() {
1178   if (!thread_safe_sender_.get() || !push_dispatcher_.get())
1179     return nullptr;
1180
1181   return PushProvider::ThreadSpecificInstance(thread_safe_sender_.get(),
1182                                               push_dispatcher_.get());
1183 }
1184
1185 blink::WebServicePortProvider* BlinkPlatformImpl::createServicePortProvider(
1186     blink::WebServicePortProviderClient* client) {
1187   return new ServicePortProvider(client, main_thread_task_runner_);
1188 }
1189
1190 blink::WebPermissionClient* BlinkPlatformImpl::permissionClient() {
1191   if (!permission_client_.get())
1192     return nullptr;
1193
1194   if (IsMainThread())
1195     return permission_client_.get();
1196
1197   return PermissionDispatcherThreadProxy::GetThreadInstance(
1198       main_thread_task_runner_.get(), permission_client_.get());
1199 }
1200
1201 blink::WebSyncProvider* BlinkPlatformImpl::backgroundSyncProvider() {
1202   if (!sync_provider_.get())
1203     return nullptr;
1204
1205   if (IsMainThread())
1206     return sync_provider_.get();
1207
1208   return BackgroundSyncProviderThreadProxy::GetThreadInstance(
1209       main_thread_task_runner_.get(), sync_provider_.get());
1210 }
1211
1212 WebThemeEngine* BlinkPlatformImpl::themeEngine() {
1213   return &native_theme_engine_;
1214 }
1215
1216 WebFallbackThemeEngine* BlinkPlatformImpl::fallbackThemeEngine() {
1217   return &fallback_theme_engine_;
1218 }
1219
1220 blink::Platform::FileHandle BlinkPlatformImpl::databaseOpenFile(
1221     const blink::WebString& vfs_file_name, int desired_flags) {
1222 #if defined(OS_WIN)
1223   return INVALID_HANDLE_VALUE;
1224 #elif defined(OS_POSIX)
1225   return -1;
1226 #endif
1227 }
1228
1229 int BlinkPlatformImpl::databaseDeleteFile(
1230     const blink::WebString& vfs_file_name, bool sync_dir) {
1231   return -1;
1232 }
1233
1234 long BlinkPlatformImpl::databaseGetFileAttributes(
1235     const blink::WebString& vfs_file_name) {
1236   return 0;
1237 }
1238
1239 long long BlinkPlatformImpl::databaseGetFileSize(
1240     const blink::WebString& vfs_file_name) {
1241   return 0;
1242 }
1243
1244 long long BlinkPlatformImpl::databaseGetSpaceAvailableForOrigin(
1245     const blink::WebString& origin_identifier) {
1246   return 0;
1247 }
1248
1249 bool BlinkPlatformImpl::databaseSetFileSize(
1250     const blink::WebString& vfs_file_name, long long size) {
1251   return false;
1252 }
1253
1254 blink::WebString BlinkPlatformImpl::signedPublicKeyAndChallengeString(
1255     unsigned key_size_index,
1256     const blink::WebString& challenge,
1257     const blink::WebURL& url) {
1258   return blink::WebString("");
1259 }
1260
1261 static scoped_ptr<base::ProcessMetrics> CurrentProcessMetrics() {
1262   using base::ProcessMetrics;
1263 #if defined(OS_MACOSX)
1264   return scoped_ptr<ProcessMetrics>(
1265       // The default port provider is sufficient to get data for the current
1266       // process.
1267       ProcessMetrics::CreateProcessMetrics(base::GetCurrentProcessHandle(),
1268                                            NULL));
1269 #else
1270   return scoped_ptr<ProcessMetrics>(
1271       ProcessMetrics::CreateProcessMetrics(base::GetCurrentProcessHandle()));
1272 #endif
1273 }
1274
1275 static size_t getMemoryUsageMB(bool bypass_cache) {
1276   size_t current_mem_usage = 0;
1277   MemoryUsageCache* mem_usage_cache_singleton = MemoryUsageCache::GetInstance();
1278   if (!bypass_cache &&
1279       mem_usage_cache_singleton->IsCachedValueValid(&current_mem_usage))
1280     return current_mem_usage;
1281
1282   current_mem_usage = GetMemoryUsageKB() >> 10;
1283   mem_usage_cache_singleton->SetMemoryValue(current_mem_usage);
1284   return current_mem_usage;
1285 }
1286
1287 size_t BlinkPlatformImpl::memoryUsageMB() {
1288   return getMemoryUsageMB(false);
1289 }
1290
1291 size_t BlinkPlatformImpl::actualMemoryUsageMB() {
1292   return getMemoryUsageMB(true);
1293 }
1294
1295 size_t BlinkPlatformImpl::physicalMemoryMB() {
1296   return static_cast<size_t>(base::SysInfo::AmountOfPhysicalMemoryMB());
1297 }
1298
1299 size_t BlinkPlatformImpl::virtualMemoryLimitMB() {
1300   return static_cast<size_t>(base::SysInfo::AmountOfVirtualMemoryMB());
1301 }
1302
1303 bool BlinkPlatformImpl::isLowEndDeviceMode() {
1304   return base::SysInfo::IsLowEndDevice();
1305 }
1306
1307 size_t BlinkPlatformImpl::numberOfProcessors() {
1308   return static_cast<size_t>(base::SysInfo::NumberOfProcessors());
1309 }
1310
1311 bool BlinkPlatformImpl::processMemorySizesInBytes(
1312     size_t* private_bytes,
1313     size_t* shared_bytes) {
1314   return CurrentProcessMetrics()->GetMemoryBytes(private_bytes, shared_bytes);
1315 }
1316
1317 bool BlinkPlatformImpl::memoryAllocatorWasteInBytes(size_t* size) {
1318   return base::allocator::GetAllocatorWasteSize(size);
1319 }
1320
1321 blink::WebDiscardableMemory*
1322 BlinkPlatformImpl::allocateAndLockDiscardableMemory(size_t bytes) {
1323   return content::WebDiscardableMemoryImpl::CreateLockedMemory(bytes).release();
1324 }
1325
1326 size_t BlinkPlatformImpl::maxDecodedImageBytes() {
1327 #if defined(OS_ANDROID)
1328   if (base::SysInfo::IsLowEndDevice()) {
1329     // Limit image decoded size to 3M pixels on low end devices.
1330     // 4 is maximum number of bytes per pixel.
1331     return 3 * 1024 * 1024 * 4;
1332   }
1333   // For other devices, limit decoded image size based on the amount of physical
1334   // memory.
1335   // In some cases all physical memory is not accessible by Chromium, as it can
1336   // be reserved for direct use by certain hardware. Thus, we set the limit so
1337   // that 1.6GB of reported physical memory on a 2GB device is enough to set the
1338   // limit at 16M pixels, which is a desirable value since 4K*4K is a relatively
1339   // common texture size.
1340   return base::SysInfo::AmountOfPhysicalMemory() / 25;
1341 #else
1342   return noDecodedImageByteLimit;
1343 #endif
1344 }
1345
1346 uint32_t BlinkPlatformImpl::getUniqueIdForProcess() {
1347   // TODO(rickyz): Replace this with base::GetUniqueIdForProcess when that's
1348   // ready.
1349   return base::trace_event::TraceLog::GetInstance()->process_id();
1350 }
1351
1352 scoped_refptr<base::SingleThreadTaskRunner>
1353 BlinkPlatformImpl::MainTaskRunnerForCurrentThread() {
1354   if (main_thread_task_runner_.get() &&
1355       main_thread_task_runner_->BelongsToCurrentThread()) {
1356     return main_thread_task_runner_;
1357   } else {
1358     return base::ThreadTaskRunnerHandle::Get();
1359   }
1360 }
1361
1362 bool BlinkPlatformImpl::IsMainThread() const {
1363   return main_thread_task_runner_.get() &&
1364          main_thread_task_runner_->BelongsToCurrentThread();
1365 }
1366
1367 WebString BlinkPlatformImpl::domCodeStringFromEnum(int dom_code) {
1368   return WebString::fromUTF8(ui::KeycodeConverter::DomCodeToCodeString(
1369       static_cast<ui::DomCode>(dom_code)));
1370 }
1371
1372 int BlinkPlatformImpl::domEnumFromCodeString(const WebString& code) {
1373   return static_cast<int>(ui::KeycodeConverter::CodeStringToDomCode(
1374       code.utf8().data()));
1375 }
1376
1377 }  // namespace content