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/memory/scoped_ptr.h"
  15 #include "base/memory/singleton.h"
  16 #include "base/metrics/histogram.h"
  17 #include "base/metrics/sparse_histogram.h"
  18 #include "base/process/process_metrics.h"
  19 #include "base/rand_util.h"
  20 #include "base/strings/string_number_conversions.h"
  21 #include "base/strings/string_util.h"
  22 #include "base/strings/utf_string_conversions.h"
  23 #include "base/synchronization/lock.h"
  24 #include "base/synchronization/waitable_event.h"
  25 #include "base/sys_info.h"
  26 #include "base/thread_task_runner_handle.h"
  27 #include "base/threading/platform_thread.h"
  28 #include "base/time/time.h"
  29 #include "base/trace_event/memory_dump_manager.h"
  30 #include "blink/public/resources/grit/blink_image_resources.h"
  31 #include "blink/public/resources/grit/blink_resources.h"
  32 #include "components/mime_util/mime_util.h"
  33 #include "components/scheduler/child/webthread_impl_for_worker_scheduler.h"
  34 #include "content/app/resources/grit/content_resources.h"
  35 #include "content/app/strings/grit/content_strings.h"
  36 #include "content/child/background_sync/background_sync_provider.h"
  37 #include "content/child/background_sync/background_sync_provider_thread_proxy.h"
  38 #include "content/child/bluetooth/web_bluetooth_impl.h"
  39 #include "content/child/child_thread_impl.h"
  40 #include "content/child/content_child_helpers.h"
  41 #include "content/child/geofencing/web_geofencing_provider_impl.h"
  42 #include "content/child/navigator_connect/navigator_connect_provider.h"
  43 #include "content/child/notifications/notification_dispatcher.h"
  44 #include "content/child/notifications/notification_manager.h"
  45 #include "content/child/permissions/permission_dispatcher.h"
  46 #include "content/child/permissions/permission_dispatcher_thread_proxy.h"
  47 #include "content/child/push_messaging/push_dispatcher.h"
  48 #include "content/child/push_messaging/push_provider.h"
  49 #include "content/child/thread_safe_sender.h"
  50 #include "content/child/web_discardable_memory_impl.h"
  51 #include "content/child/web_memory_dump_provider_adapter.h"
  52 #include "content/child/web_url_loader_impl.h"
  53 #include "content/child/web_url_request_util.h"
  54 #include "content/child/websocket_bridge.h"
  55 #include "content/child/worker_task_runner.h"
  56 #include "content/public/common/content_client.h"
  57 #include "net/base/data_url.h"
  58 #include "net/base/net_errors.h"
  59 #include "net/base/net_util.h"
  60 #include "third_party/WebKit/public/platform/WebConvertableToTraceFormat.h"
  61 #include "third_party/WebKit/public/platform/WebData.h"
  62 #include "third_party/WebKit/public/platform/WebFloatPoint.h"
  63 #include "third_party/WebKit/public/platform/WebMemoryDumpProvider.h"
  64 #include "third_party/WebKit/public/platform/WebString.h"
  65 #include "third_party/WebKit/public/platform/WebURL.h"
  66 #include "third_party/WebKit/public/platform/WebWaitableEvent.h"
  67 #include "third_party/WebKit/public/web/WebSecurityOrigin.h"
  68 #include "ui/base/layout.h"
  69 #include "ui/events/gestures/blink/web_gesture_curve_impl.h"
  70 #include "ui/events/keycodes/dom/keycode_converter.h"
  71
  72 using blink::WebData;
  73 using blink::WebFallbackThemeEngine;
  74 using blink::WebLocalizedString;
  75 using blink::WebString;
  76 using blink::WebThemeEngine;
  77 using blink::WebURL;
  78 using blink::WebURLError;
  79 using blink::WebURLLoader;
  80
  81 namespace content {
  82
  83 namespace {
  84
  85 class WebWaitableEventImpl : public blink::WebWaitableEvent {
  86  public:
  87   WebWaitableEventImpl() : impl_(new base::WaitableEvent(false, false)) {}
  88   virtual ~WebWaitableEventImpl() {}
  89
  90   virtual void wait() { impl_->Wait(); }
  91   virtual void signal() { impl_->Signal(); }
  92
  93   base::WaitableEvent* impl() {
  94     return impl_.get();
  95   }
  96
  97  private:
  98   scoped_ptr<base::WaitableEvent> impl_;
  99   DISALLOW_COPY_AND_ASSIGN(WebWaitableEventImpl);
 100 };
 101
 102 // A simple class to cache the memory usage for a given amount of time.
 103 class MemoryUsageCache {
 104  public:
 105   // Retrieves the Singleton.
 106   static MemoryUsageCache* GetInstance() {
 107     return Singleton<MemoryUsageCache>::get();
 108   }
 109
 110   MemoryUsageCache() : memory_value_(0) { Init(); }
 111   ~MemoryUsageCache() {}
 112
 113   void Init() {
 114     const unsigned int kCacheSeconds = 1;
 115     cache_valid_time_ = base::TimeDelta::FromSeconds(kCacheSeconds);
 116   }
 117
 118   // Returns true if the cached value is fresh.
 119   // Returns false if the cached value is stale, or if |cached_value| is NULL.
 120   bool IsCachedValueValid(size_t* cached_value) {
 121     base::AutoLock scoped_lock(lock_);
 122     if (!cached_value)
 123       return false;
 124     if (base::Time::Now() - last_updated_time_ > cache_valid_time_)
 125       return false;
 126     *cached_value = memory_value_;
 127     return true;
 128   };
 129
 130   // Setter for |memory_value_|, refreshes |last_updated_time_|.
 131   void SetMemoryValue(const size_t value) {
 132     base::AutoLock scoped_lock(lock_);
 133     memory_value_ = value;
 134     last_updated_time_ = base::Time::Now();
 135   }
 136
 137  private:
 138   // The cached memory value.
 139   size_t memory_value_;
 140
 141   // How long the cached value should remain valid.
 142   base::TimeDelta cache_valid_time_;
 143
 144   // The last time the cached value was updated.
 145   base::Time last_updated_time_;
 146
 147   base::Lock lock_;
 148 };
 149
 150 class ConvertableToTraceFormatWrapper
 151     : public base::trace_event::ConvertableToTraceFormat {
 152  public:
 153   // We move a reference pointer from |convertable| to |convertable_|,
 154   // rather than copying, for thread safety. https://crbug.com/478149
 155   explicit ConvertableToTraceFormatWrapper(
 156       blink::WebConvertableToTraceFormat& convertable) {
 157     convertable_.moveFrom(convertable);
 158   }
 159   void AppendAsTraceFormat(std::string* out) const override {
 160     *out += convertable_.asTraceFormat().utf8();
 161   }
 162
 163  private:
 164   ~ConvertableToTraceFormatWrapper() override {}
 165
 166   blink::WebConvertableToTraceFormat convertable_;
 167 };
 168
 169 }  // namespace
 170
 171 static int ToMessageID(WebLocalizedString::Name name) {
 172   switch (name) {
 173     case WebLocalizedString::AXAMPMFieldText:
 174       return IDS_AX_AM_PM_FIELD_TEXT;
 175     case WebLocalizedString::AXButtonActionVerb:
 176       return IDS_AX_BUTTON_ACTION_VERB;
 177     case WebLocalizedString::AXCalendarShowMonthSelector:
 178       return IDS_AX_CALENDAR_SHOW_MONTH_SELECTOR;
 179     case WebLocalizedString::AXCalendarShowNextMonth:
 180       return IDS_AX_CALENDAR_SHOW_NEXT_MONTH;
 181     case WebLocalizedString::AXCalendarShowPreviousMonth:
 182       return IDS_AX_CALENDAR_SHOW_PREVIOUS_MONTH;
 183     case WebLocalizedString::AXCalendarWeekDescription:
 184       return IDS_AX_CALENDAR_WEEK_DESCRIPTION;
 185     case WebLocalizedString::AXCheckedCheckBoxActionVerb:
 186       return IDS_AX_CHECKED_CHECK_BOX_ACTION_VERB;
 187     case WebLocalizedString::AXDateTimeFieldEmptyValueText:
 188       return IDS_AX_DATE_TIME_FIELD_EMPTY_VALUE_TEXT;
 189     case WebLocalizedString::AXDayOfMonthFieldText:
 190       return IDS_AX_DAY_OF_MONTH_FIELD_TEXT;
 191     case WebLocalizedString::AXHeadingText:
 192       return IDS_AX_ROLE_HEADING;
 193     case WebLocalizedString::AXHourFieldText:
 194       return IDS_AX_HOUR_FIELD_TEXT;
 195     case WebLocalizedString::AXImageMapText:
 196       return IDS_AX_ROLE_IMAGE_MAP;
 197     case WebLocalizedString::AXLinkActionVerb:
 198       return IDS_AX_LINK_ACTION_VERB;
 199     case WebLocalizedString::AXLinkText:
 200       return IDS_AX_ROLE_LINK;
 201     case WebLocalizedString::AXListMarkerText:
 202       return IDS_AX_ROLE_LIST_MARKER;
 203     case WebLocalizedString::AXMediaDefault:
 204       return IDS_AX_MEDIA_DEFAULT;
 205     case WebLocalizedString::AXMediaAudioElement:
 206       return IDS_AX_MEDIA_AUDIO_ELEMENT;
 207     case WebLocalizedString::AXMediaVideoElement:
 208       return IDS_AX_MEDIA_VIDEO_ELEMENT;
 209     case WebLocalizedString::AXMediaMuteButton:
 210       return IDS_AX_MEDIA_MUTE_BUTTON;
 211     case WebLocalizedString::AXMediaUnMuteButton:
 212       return IDS_AX_MEDIA_UNMUTE_BUTTON;
 213     case WebLocalizedString::AXMediaPlayButton:
 214       return IDS_AX_MEDIA_PLAY_BUTTON;
 215     case WebLocalizedString::AXMediaPauseButton:
 216       return IDS_AX_MEDIA_PAUSE_BUTTON;
 217     case WebLocalizedString::AXMediaSlider:
 218       return IDS_AX_MEDIA_SLIDER;
 219     case WebLocalizedString::AXMediaSliderThumb:
 220       return IDS_AX_MEDIA_SLIDER_THUMB;
 221     case WebLocalizedString::AXMediaCurrentTimeDisplay:
 222       return IDS_AX_MEDIA_CURRENT_TIME_DISPLAY;
 223     case WebLocalizedString::AXMediaTimeRemainingDisplay:
 224       return IDS_AX_MEDIA_TIME_REMAINING_DISPLAY;
 225     case WebLocalizedString::AXMediaStatusDisplay:
 226       return IDS_AX_MEDIA_STATUS_DISPLAY;
 227     case WebLocalizedString::AXMediaEnterFullscreenButton:
 228       return IDS_AX_MEDIA_ENTER_FULL_SCREEN_BUTTON;
 229     case WebLocalizedString::AXMediaExitFullscreenButton:
 230       return IDS_AX_MEDIA_EXIT_FULL_SCREEN_BUTTON;
 231     case WebLocalizedString::AXMediaShowClosedCaptionsButton:
 232       return IDS_AX_MEDIA_SHOW_CLOSED_CAPTIONS_BUTTON;
 233     case WebLocalizedString::AXMediaHideClosedCaptionsButton:
 234       return IDS_AX_MEDIA_HIDE_CLOSED_CAPTIONS_BUTTON;
 235     case WebLocalizedString::AxMediaCastOffButton:
 236       return IDS_AX_MEDIA_CAST_OFF_BUTTON;
 237     case WebLocalizedString::AxMediaCastOnButton:
 238       return IDS_AX_MEDIA_CAST_ON_BUTTON;
 239     case WebLocalizedString::AXMediaAudioElementHelp:
 240       return IDS_AX_MEDIA_AUDIO_ELEMENT_HELP;
 241     case WebLocalizedString::AXMediaVideoElementHelp:
 242       return IDS_AX_MEDIA_VIDEO_ELEMENT_HELP;
 243     case WebLocalizedString::AXMediaMuteButtonHelp:
 244       return IDS_AX_MEDIA_MUTE_BUTTON_HELP;
 245     case WebLocalizedString::AXMediaUnMuteButtonHelp:
 246       return IDS_AX_MEDIA_UNMUTE_BUTTON_HELP;
 247     case WebLocalizedString::AXMediaPlayButtonHelp:
 248       return IDS_AX_MEDIA_PLAY_BUTTON_HELP;
 249     case WebLocalizedString::AXMediaPauseButtonHelp:
 250       return IDS_AX_MEDIA_PAUSE_BUTTON_HELP;
 251     case WebLocalizedString::AXMediaAudioSliderHelp:
 252       return IDS_AX_MEDIA_AUDIO_SLIDER_HELP;
 253     case WebLocalizedString::AXMediaVideoSliderHelp:
 254       return IDS_AX_MEDIA_VIDEO_SLIDER_HELP;
 255     case WebLocalizedString::AXMediaSliderThumbHelp:
 256       return IDS_AX_MEDIA_SLIDER_THUMB_HELP;
 257     case WebLocalizedString::AXMediaCurrentTimeDisplayHelp:
 258       return IDS_AX_MEDIA_CURRENT_TIME_DISPLAY_HELP;
 259     case WebLocalizedString::AXMediaTimeRemainingDisplayHelp:
 260       return IDS_AX_MEDIA_TIME_REMAINING_DISPLAY_HELP;
 261     case WebLocalizedString::AXMediaStatusDisplayHelp:
 262       return IDS_AX_MEDIA_STATUS_DISPLAY_HELP;
 263     case WebLocalizedString::AXMediaEnterFullscreenButtonHelp:
 264       return IDS_AX_MEDIA_ENTER_FULL_SCREEN_BUTTON_HELP;
 265     case WebLocalizedString::AXMediaExitFullscreenButtonHelp:
 266       return IDS_AX_MEDIA_EXIT_FULL_SCREEN_BUTTON_HELP;
 267     case WebLocalizedString::AXMediaShowClosedCaptionsButtonHelp:
 268       return IDS_AX_MEDIA_SHOW_CLOSED_CAPTIONS_BUTTON_HELP;
 269     case WebLocalizedString::AXMediaHideClosedCaptionsButtonHelp:
 270       return IDS_AX_MEDIA_HIDE_CLOSED_CAPTIONS_BUTTON_HELP;
 271     case WebLocalizedString::AxMediaCastOffButtonHelp:
 272       return IDS_AX_MEDIA_CAST_OFF_BUTTON_HELP;
 273     case WebLocalizedString::AxMediaCastOnButtonHelp:
 274       return IDS_AX_MEDIA_CAST_ON_BUTTON_HELP;
 275     case WebLocalizedString::AXMillisecondFieldText:
 276       return IDS_AX_MILLISECOND_FIELD_TEXT;
 277     case WebLocalizedString::AXMinuteFieldText:
 278       return IDS_AX_MINUTE_FIELD_TEXT;
 279     case WebLocalizedString::AXMonthFieldText:
 280       return IDS_AX_MONTH_FIELD_TEXT;
 281     case WebLocalizedString::AXRadioButtonActionVerb:
 282       return IDS_AX_RADIO_BUTTON_ACTION_VERB;
 283     case WebLocalizedString::AXSecondFieldText:
 284       return IDS_AX_SECOND_FIELD_TEXT;
 285     case WebLocalizedString::AXTextFieldActionVerb:
 286       return IDS_AX_TEXT_FIELD_ACTION_VERB;
 287     case WebLocalizedString::AXUncheckedCheckBoxActionVerb:
 288       return IDS_AX_UNCHECKED_CHECK_BOX_ACTION_VERB;
 289     case WebLocalizedString::AXWebAreaText:
 290       return IDS_AX_ROLE_WEB_AREA;
 291     case WebLocalizedString::AXWeekOfYearFieldText:
 292       return IDS_AX_WEEK_OF_YEAR_FIELD_TEXT;
 293     case WebLocalizedString::AXYearFieldText:
 294       return IDS_AX_YEAR_FIELD_TEXT;
 295     case WebLocalizedString::CalendarClear:
 296       return IDS_FORM_CALENDAR_CLEAR;
 297     case WebLocalizedString::CalendarToday:
 298       return IDS_FORM_CALENDAR_TODAY;
 299     case WebLocalizedString::DateFormatDayInMonthLabel:
 300       return IDS_FORM_DATE_FORMAT_DAY_IN_MONTH;
 301     case WebLocalizedString::DateFormatMonthLabel:
 302       return IDS_FORM_DATE_FORMAT_MONTH;
 303     case WebLocalizedString::DateFormatYearLabel:
 304       return IDS_FORM_DATE_FORMAT_YEAR;
 305     case WebLocalizedString::DetailsLabel:
 306       return IDS_DETAILS_WITHOUT_SUMMARY_LABEL;
 307     case WebLocalizedString::FileButtonChooseFileLabel:
 308       return IDS_FORM_FILE_BUTTON_LABEL;
 309     case WebLocalizedString::FileButtonChooseMultipleFilesLabel:
 310       return IDS_FORM_MULTIPLE_FILES_BUTTON_LABEL;
 311     case WebLocalizedString::FileButtonNoFileSelectedLabel:
 312       return IDS_FORM_FILE_NO_FILE_LABEL;
 313     case WebLocalizedString::InputElementAltText:
 314       return IDS_FORM_INPUT_ALT;
 315     case WebLocalizedString::KeygenMenuHighGradeKeySize:
 316       return IDS_KEYGEN_HIGH_GRADE_KEY;
 317     case WebLocalizedString::KeygenMenuMediumGradeKeySize:
 318       return IDS_KEYGEN_MED_GRADE_KEY;
 319     case WebLocalizedString::MissingPluginText:
 320       return IDS_PLUGIN_INITIALIZATION_ERROR;
 321     case WebLocalizedString::MultipleFileUploadText:
 322       return IDS_FORM_FILE_MULTIPLE_UPLOAD;
 323     case WebLocalizedString::OtherColorLabel:
 324       return IDS_FORM_OTHER_COLOR_LABEL;
 325     case WebLocalizedString::OtherDateLabel:
 326         return IDS_FORM_OTHER_DATE_LABEL;
 327     case WebLocalizedString::OtherMonthLabel:
 328       return IDS_FORM_OTHER_MONTH_LABEL;
 329     case WebLocalizedString::OtherTimeLabel:
 330       return IDS_FORM_OTHER_TIME_LABEL;
 331     case WebLocalizedString::OtherWeekLabel:
 332       return IDS_FORM_OTHER_WEEK_LABEL;
 333     case WebLocalizedString::PlaceholderForDayOfMonthField:
 334       return IDS_FORM_PLACEHOLDER_FOR_DAY_OF_MONTH_FIELD;
 335     case WebLocalizedString::PlaceholderForMonthField:
 336       return IDS_FORM_PLACEHOLDER_FOR_MONTH_FIELD;
 337     case WebLocalizedString::PlaceholderForYearField:
 338       return IDS_FORM_PLACEHOLDER_FOR_YEAR_FIELD;
 339     case WebLocalizedString::ResetButtonDefaultLabel:
 340       return IDS_FORM_RESET_LABEL;
 341     case WebLocalizedString::SearchableIndexIntroduction:
 342       return IDS_SEARCHABLE_INDEX_INTRO;
 343     case WebLocalizedString::SearchMenuClearRecentSearchesText:
 344       return IDS_RECENT_SEARCHES_CLEAR;
 345     case WebLocalizedString::SearchMenuNoRecentSearchesText:
 346       return IDS_RECENT_SEARCHES_NONE;
 347     case WebLocalizedString::SearchMenuRecentSearchesText:
 348       return IDS_RECENT_SEARCHES;
 349     case WebLocalizedString::SelectMenuListText:
 350       return IDS_FORM_SELECT_MENU_LIST_TEXT;
 351     case WebLocalizedString::SubmitButtonDefaultLabel:
 352       return IDS_FORM_SUBMIT_LABEL;
 353     case WebLocalizedString::ThisMonthButtonLabel:
 354       return IDS_FORM_THIS_MONTH_LABEL;
 355     case WebLocalizedString::ThisWeekButtonLabel:
 356       return IDS_FORM_THIS_WEEK_LABEL;
 357     case WebLocalizedString::ValidationBadInputForDateTime:
 358       return IDS_FORM_VALIDATION_BAD_INPUT_DATETIME;
 359     case WebLocalizedString::ValidationBadInputForNumber:
 360       return IDS_FORM_VALIDATION_BAD_INPUT_NUMBER;
 361     case WebLocalizedString::ValidationPatternMismatch:
 362       return IDS_FORM_VALIDATION_PATTERN_MISMATCH;
 363     case WebLocalizedString::ValidationRangeOverflow:
 364       return IDS_FORM_VALIDATION_RANGE_OVERFLOW;
 365     case WebLocalizedString::ValidationRangeOverflowDateTime:
 366       return IDS_FORM_VALIDATION_RANGE_OVERFLOW_DATETIME;
 367     case WebLocalizedString::ValidationRangeUnderflow:
 368       return IDS_FORM_VALIDATION_RANGE_UNDERFLOW;
 369     case WebLocalizedString::ValidationRangeUnderflowDateTime:
 370       return IDS_FORM_VALIDATION_RANGE_UNDERFLOW_DATETIME;
 371     case WebLocalizedString::ValidationStepMismatch:
 372       return IDS_FORM_VALIDATION_STEP_MISMATCH;
 373     case WebLocalizedString::ValidationStepMismatchCloseToLimit:
 374       return IDS_FORM_VALIDATION_STEP_MISMATCH_CLOSE_TO_LIMIT;
 375     case WebLocalizedString::ValidationTooLong:
 376       return IDS_FORM_VALIDATION_TOO_LONG;
 377     case WebLocalizedString::ValidationTooShort:
 378       return IDS_FORM_VALIDATION_TOO_SHORT;
 379     case WebLocalizedString::ValidationTypeMismatch:
 380       return IDS_FORM_VALIDATION_TYPE_MISMATCH;
 381     case WebLocalizedString::ValidationTypeMismatchForEmail:
 382       return IDS_FORM_VALIDATION_TYPE_MISMATCH_EMAIL;
 383     case WebLocalizedString::ValidationTypeMismatchForEmailEmpty:
 384       return IDS_FORM_VALIDATION_TYPE_MISMATCH_EMAIL_EMPTY;
 385     case WebLocalizedString::ValidationTypeMismatchForEmailEmptyDomain:
 386       return IDS_FORM_VALIDATION_TYPE_MISMATCH_EMAIL_EMPTY_DOMAIN;
 387     case WebLocalizedString::ValidationTypeMismatchForEmailEmptyLocal:
 388       return IDS_FORM_VALIDATION_TYPE_MISMATCH_EMAIL_EMPTY_LOCAL;
 389     case WebLocalizedString::ValidationTypeMismatchForEmailInvalidDomain:
 390       return IDS_FORM_VALIDATION_TYPE_MISMATCH_EMAIL_INVALID_DOMAIN;
 391     case WebLocalizedString::ValidationTypeMismatchForEmailInvalidDots:
 392       return IDS_FORM_VALIDATION_TYPE_MISMATCH_EMAIL_INVALID_DOTS;
 393     case WebLocalizedString::ValidationTypeMismatchForEmailInvalidLocal:
 394       return IDS_FORM_VALIDATION_TYPE_MISMATCH_EMAIL_INVALID_LOCAL;
 395     case WebLocalizedString::ValidationTypeMismatchForEmailNoAtSign:
 396       return IDS_FORM_VALIDATION_TYPE_MISMATCH_EMAIL_NO_AT_SIGN;
 397     case WebLocalizedString::ValidationTypeMismatchForMultipleEmail:
 398       return IDS_FORM_VALIDATION_TYPE_MISMATCH_MULTIPLE_EMAIL;
 399     case WebLocalizedString::ValidationTypeMismatchForURL:
 400       return IDS_FORM_VALIDATION_TYPE_MISMATCH_URL;
 401     case WebLocalizedString::ValidationValueMissing:
 402       return IDS_FORM_VALIDATION_VALUE_MISSING;
 403     case WebLocalizedString::ValidationValueMissingForCheckbox:
 404       return IDS_FORM_VALIDATION_VALUE_MISSING_CHECKBOX;
 405     case WebLocalizedString::ValidationValueMissingForFile:
 406       return IDS_FORM_VALIDATION_VALUE_MISSING_FILE;
 407     case WebLocalizedString::ValidationValueMissingForMultipleFile:
 408       return IDS_FORM_VALIDATION_VALUE_MISSING_MULTIPLE_FILE;
 409     case WebLocalizedString::ValidationValueMissingForRadio:
 410       return IDS_FORM_VALIDATION_VALUE_MISSING_RADIO;
 411     case WebLocalizedString::ValidationValueMissingForSelect:
 412       return IDS_FORM_VALIDATION_VALUE_MISSING_SELECT;
 413     case WebLocalizedString::WeekFormatTemplate:
 414       return IDS_FORM_INPUT_WEEK_TEMPLATE;
 415     case WebLocalizedString::WeekNumberLabel:
 416       return IDS_FORM_WEEK_NUMBER_LABEL;
 417     // This "default:" line exists to avoid compile warnings about enum
 418     // coverage when we add a new symbol to WebLocalizedString.h in WebKit.
 419     // After a planned WebKit patch is landed, we need to add a case statement
 420     // for the added symbol here.
 421     default:
 422       break;
 423   }
 424   return -1;
 425 }
 426
 427 BlinkPlatformImpl::BlinkPlatformImpl()
 428     : main_thread_task_runner_(base::MessageLoopProxy::current()),
 429       shared_timer_func_(NULL),
 430       shared_timer_fire_time_(0.0),
 431       shared_timer_fire_time_was_set_while_suspended_(false),
 432       shared_timer_suspended_(0) {
 433   InternalInit();
 434 }
 435
 436 BlinkPlatformImpl::BlinkPlatformImpl(
 437     scoped_refptr<base::SingleThreadTaskRunner> main_thread_task_runner)
 438     : main_thread_task_runner_(main_thread_task_runner),
 439       shared_timer_func_(NULL),
 440       shared_timer_fire_time_(0.0),
 441       shared_timer_fire_time_was_set_while_suspended_(false),
 442       shared_timer_suspended_(0) {
 443   // TODO(alexclarke): Use c++11 delegated constructors when allowed.
 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   if (main_thread_task_runner_.get()) {
 465     shared_timer_.SetTaskRunner(main_thread_task_runner_);
 466   }
 467 }
 468
 469 void BlinkPlatformImpl::UpdateWebThreadTLS(blink::WebThread* thread) {
 470   DCHECK(!current_thread_slot_.Get());
 471   current_thread_slot_.Set(thread);
 472 }
 473
 474 BlinkPlatformImpl::~BlinkPlatformImpl() {
 475 }
 476
 477 WebURLLoader* BlinkPlatformImpl::createURLLoader() {
 478   ChildThreadImpl* child_thread = ChildThreadImpl::current();
 479   // There may be no child thread in RenderViewTests.  These tests can still use
 480   // data URLs to bypass the ResourceDispatcher.
 481   return new WebURLLoaderImpl(
 482       child_thread ? child_thread->resource_dispatcher() : NULL,
 483       MainTaskRunnerForCurrentThread());
 484 }
 485
 486 blink::WebSocketHandle* BlinkPlatformImpl::createWebSocketHandle() {
 487   return new WebSocketBridge;
 488 }
 489
 490 WebString BlinkPlatformImpl::userAgent() {
 491   return WebString::fromUTF8(GetContentClient()->GetUserAgent());
 492 }
 493
 494 WebData BlinkPlatformImpl::parseDataURL(const WebURL& url,
 495                                         WebString& mimetype_out,
 496                                         WebString& charset_out) {
 497   std::string mime_type, char_set, data;
 498   if (net::DataURL::Parse(url, &mime_type, &char_set, &data) &&
 499       mime_util::IsSupportedMimeType(mime_type)) {
 500     mimetype_out = WebString::fromUTF8(mime_type);
 501     charset_out = WebString::fromUTF8(char_set);
 502     return data;
 503   }
 504   return WebData();
 505 }
 506
 507 WebURLError BlinkPlatformImpl::cancelledError(
 508     const WebURL& unreachableURL) const {
 509   return CreateWebURLError(unreachableURL, false, net::ERR_ABORTED);
 510 }
 511
 512 bool BlinkPlatformImpl::isReservedIPAddress(
 513     const blink::WebString& host) const {
 514   net::IPAddressNumber address;
 515   if (!net::ParseURLHostnameToNumber(host.utf8(), &address))
 516     return false;
 517   return net::IsIPAddressReserved(address);
 518 }
 519
 520 bool BlinkPlatformImpl::portAllowed(const blink::WebURL& url) const {
 521   GURL gurl = GURL(url);
 522   if (!gurl.has_port())
 523     return true;
 524   int port = gurl.IntPort();
 525   if (net::IsPortAllowedByOverride(port))
 526     return true;
 527   if (gurl.SchemeIs("ftp"))
 528     return net::IsPortAllowedByFtp(port);
 529   return net::IsPortAllowedByDefault(port);
 530 }
 531
 532 blink::WebThread* BlinkPlatformImpl::createThread(const char* name) {
 533   scheduler::WebThreadImplForWorkerScheduler* thread =
 534       new scheduler::WebThreadImplForWorkerScheduler(name);
 535   thread->TaskRunner()->PostTask(
 536       FROM_HERE, base::Bind(&BlinkPlatformImpl::UpdateWebThreadTLS,
 537                             base::Unretained(this), thread));
 538   return thread;
 539 }
 540
 541 blink::WebThread* BlinkPlatformImpl::currentThread() {
 542   return static_cast<blink::WebThread*>(current_thread_slot_.Get());
 543 }
 544
 545 void BlinkPlatformImpl::yieldCurrentThread() {
 546   base::PlatformThread::YieldCurrentThread();
 547 }
 548
 549 blink::WebWaitableEvent* BlinkPlatformImpl::createWaitableEvent() {
 550   return new WebWaitableEventImpl();
 551 }
 552
 553 blink::WebWaitableEvent* BlinkPlatformImpl::waitMultipleEvents(
 554     const blink::WebVector<blink::WebWaitableEvent*>& web_events) {
 555   std::vector<base::WaitableEvent*> events;
 556   for (size_t i = 0; i < web_events.size(); ++i)
 557     events.push_back(static_cast<WebWaitableEventImpl*>(web_events[i])->impl());
 558   size_t idx = base::WaitableEvent::WaitMany(
 559       vector_as_array(&events), events.size());
 560   DCHECK_LT(idx, web_events.size());
 561   return web_events[idx];
 562 }
 563
 564 void BlinkPlatformImpl::decrementStatsCounter(const char* name) {
 565 }
 566
 567 void BlinkPlatformImpl::incrementStatsCounter(const char* name) {
 568 }
 569
 570 void BlinkPlatformImpl::histogramCustomCounts(
 571     const char* name, int sample, int min, int max, int bucket_count) {
 572   // Copied from histogram macro, but without the static variable caching
 573   // the histogram because name is dynamic.
 574   base::HistogramBase* counter =
 575       base::Histogram::FactoryGet(name, min, max, bucket_count,
 576           base::HistogramBase::kUmaTargetedHistogramFlag);
 577   DCHECK_EQ(name, counter->histogram_name());
 578   counter->Add(sample);
 579 }
 580
 581 void BlinkPlatformImpl::histogramEnumeration(
 582     const char* name, int sample, int boundary_value) {
 583   // Copied from histogram macro, but without the static variable caching
 584   // the histogram because name is dynamic.
 585   base::HistogramBase* counter =
 586       base::LinearHistogram::FactoryGet(name, 1, boundary_value,
 587           boundary_value + 1, base::HistogramBase::kUmaTargetedHistogramFlag);
 588   DCHECK_EQ(name, counter->histogram_name());
 589   counter->Add(sample);
 590 }
 591
 592 void BlinkPlatformImpl::histogramSparse(const char* name, int sample) {
 593   // For sparse histograms, we can use the macro, as it does not incorporate a
 594   // static.
 595   UMA_HISTOGRAM_SPARSE_SLOWLY(name, sample);
 596 }
 597
 598 const unsigned char* BlinkPlatformImpl::getTraceCategoryEnabledFlag(
 599     const char* category_group) {
 600   return TRACE_EVENT_API_GET_CATEGORY_GROUP_ENABLED(category_group);
 601 }
 602
 603 blink::Platform::TraceEventAPIAtomicWord*
 604 BlinkPlatformImpl::getTraceSamplingState(const unsigned thread_bucket) {
 605   switch (thread_bucket) {
 606     case 0:
 607       return reinterpret_cast<blink::Platform::TraceEventAPIAtomicWord*>(
 608           &TRACE_EVENT_API_THREAD_BUCKET(0));
 609     case 1:
 610       return reinterpret_cast<blink::Platform::TraceEventAPIAtomicWord*>(
 611           &TRACE_EVENT_API_THREAD_BUCKET(1));
 612     case 2:
 613       return reinterpret_cast<blink::Platform::TraceEventAPIAtomicWord*>(
 614           &TRACE_EVENT_API_THREAD_BUCKET(2));
 615     default:
 616       NOTREACHED() << "Unknown thread bucket type.";
 617   }
 618   return NULL;
 619 }
 620
 621 static_assert(
 622     sizeof(blink::Platform::TraceEventHandle) ==
 623         sizeof(base::trace_event::TraceEventHandle),
 624     "TraceEventHandle types must be same size");
 625
 626 blink::Platform::TraceEventHandle BlinkPlatformImpl::addTraceEvent(
 627     char phase,
 628     const unsigned char* category_group_enabled,
 629     const char* name,
 630     unsigned long long id,
 631     double timestamp,
 632     int num_args,
 633     const char** arg_names,
 634     const unsigned char* arg_types,
 635     const unsigned long long* arg_values,
 636     unsigned char flags) {
 637   base::TimeTicks timestamp_tt = base::TimeTicks::FromInternalValue(
 638       static_cast<int64>(timestamp * base::Time::kMicrosecondsPerSecond));
 639   base::trace_event::TraceEventHandle handle =
 640       TRACE_EVENT_API_ADD_TRACE_EVENT_WITH_THREAD_ID_AND_TIMESTAMP(
 641           phase, category_group_enabled, name, id,
 642           base::PlatformThread::CurrentId(),
 643           timestamp_tt,
 644           num_args, arg_names, arg_types, arg_values, NULL, flags);
 645   blink::Platform::TraceEventHandle result;
 646   memcpy(&result, &handle, sizeof(result));
 647   return result;
 648 }
 649
 650 blink::Platform::TraceEventHandle BlinkPlatformImpl::addTraceEvent(
 651     char phase,
 652     const unsigned char* category_group_enabled,
 653     const char* name,
 654     unsigned long long id,
 655     double timestamp,
 656     int num_args,
 657     const char** arg_names,
 658     const unsigned char* arg_types,
 659     const unsigned long long* arg_values,
 660     blink::WebConvertableToTraceFormat* convertable_values,
 661     unsigned char flags) {
 662   scoped_refptr<base::trace_event::ConvertableToTraceFormat>
 663       convertable_wrappers[2];
 664   if (convertable_values) {
 665     size_t size = std::min(static_cast<size_t>(num_args),
 666                            arraysize(convertable_wrappers));
 667     for (size_t i = 0; i < size; ++i) {
 668       if (arg_types[i] == TRACE_VALUE_TYPE_CONVERTABLE) {
 669         convertable_wrappers[i] =
 670             new ConvertableToTraceFormatWrapper(convertable_values[i]);
 671       }
 672     }
 673   }
 674   base::TimeTicks timestamp_tt = base::TimeTicks::FromInternalValue(
 675       static_cast<int64>(timestamp * base::Time::kMicrosecondsPerSecond));
 676   base::trace_event::TraceEventHandle handle =
 677       TRACE_EVENT_API_ADD_TRACE_EVENT_WITH_THREAD_ID_AND_TIMESTAMP(phase,
 678                                       category_group_enabled,
 679                                       name,
 680                                       id,
 681                                       base::PlatformThread::CurrentId(),
 682                                       timestamp_tt,
 683                                       num_args,
 684                                       arg_names,
 685                                       arg_types,
 686                                       arg_values,
 687                                       convertable_wrappers,
 688                                       flags);
 689   blink::Platform::TraceEventHandle result;
 690   memcpy(&result, &handle, sizeof(result));
 691   return result;
 692 }
 693
 694 void BlinkPlatformImpl::updateTraceEventDuration(
 695     const unsigned char* category_group_enabled,
 696     const char* name,
 697     TraceEventHandle handle) {
 698   base::trace_event::TraceEventHandle traceEventHandle;
 699   memcpy(&traceEventHandle, &handle, sizeof(handle));
 700   TRACE_EVENT_API_UPDATE_TRACE_EVENT_DURATION(
 701       category_group_enabled, name, traceEventHandle);
 702 }
 703
 704 void BlinkPlatformImpl::registerMemoryDumpProvider(
 705     blink::WebMemoryDumpProvider* wmdp) {
 706   WebMemoryDumpProviderAdapter* wmdp_adapter =
 707       new WebMemoryDumpProviderAdapter(wmdp);
 708   bool did_insert =
 709       memory_dump_providers_.add(wmdp, make_scoped_ptr(wmdp_adapter)).second;
 710   if (!did_insert)
 711     return;
 712   wmdp_adapter->set_is_registered(true);
 713   base::trace_event::MemoryDumpManager::GetInstance()->RegisterDumpProvider(
 714       wmdp_adapter, base::ThreadTaskRunnerHandle::Get());
 715 }
 716
 717 void BlinkPlatformImpl::unregisterMemoryDumpProvider(
 718     blink::WebMemoryDumpProvider* wmdp) {
 719   scoped_ptr<WebMemoryDumpProviderAdapter> wmdp_adapter =
 720       memory_dump_providers_.take_and_erase(wmdp);
 721   if (!wmdp_adapter)
 722     return;
 723   base::trace_event::MemoryDumpManager::GetInstance()->UnregisterDumpProvider(
 724       wmdp_adapter.get());
 725   wmdp_adapter->set_is_registered(false);
 726 }
 727
 728 namespace {
 729
 730 WebData loadAudioSpatializationResource(const char* name) {
 731 #ifdef IDR_AUDIO_SPATIALIZATION_COMPOSITE
 732   if (!strcmp(name, "Composite")) {
 733     base::StringPiece resource = GetContentClient()->GetDataResource(
 734         IDR_AUDIO_SPATIALIZATION_COMPOSITE, ui::SCALE_FACTOR_NONE);
 735     return WebData(resource.data(), resource.size());
 736   }
 737 #endif
 738
 739 #ifdef IDR_AUDIO_SPATIALIZATION_T000_P000
 740   const size_t kExpectedSpatializationNameLength = 31;
 741   if (strlen(name) != kExpectedSpatializationNameLength) {
 742     return WebData();
 743   }
 744
 745   // Extract the azimuth and elevation from the resource name.
 746   int azimuth = 0;
 747   int elevation = 0;
 748   int values_parsed =
 749       sscanf(name, "IRC_Composite_C_R0195_T%3d_P%3d", &azimuth, &elevation);
 750   if (values_parsed != 2) {
 751     return WebData();
 752   }
 753
 754   // The resource index values go through the elevations first, then azimuths.
 755   const int kAngleSpacing = 15;
 756
 757   // 0 <= elevation <= 90 (or 315 <= elevation <= 345)
 758   // in increments of 15 degrees.
 759   int elevation_index =
 760       elevation <= 90 ? elevation / kAngleSpacing :
 761       7 + (elevation - 315) / kAngleSpacing;
 762   bool is_elevation_index_good = 0 <= elevation_index && elevation_index < 10;
 763
 764   // 0 <= azimuth < 360 in increments of 15 degrees.
 765   int azimuth_index = azimuth / kAngleSpacing;
 766   bool is_azimuth_index_good = 0 <= azimuth_index && azimuth_index < 24;
 767
 768   const int kNumberOfElevations = 10;
 769   const int kNumberOfAudioResources = 240;
 770   int resource_index = kNumberOfElevations * azimuth_index + elevation_index;
 771   bool is_resource_index_good = 0 <= resource_index &&
 772       resource_index < kNumberOfAudioResources;
 773
 774   if (is_azimuth_index_good && is_elevation_index_good &&
 775       is_resource_index_good) {
 776     const int kFirstAudioResourceIndex = IDR_AUDIO_SPATIALIZATION_T000_P000;
 777     base::StringPiece resource = GetContentClient()->GetDataResource(
 778         kFirstAudioResourceIndex + resource_index, ui::SCALE_FACTOR_NONE);
 779     return WebData(resource.data(), resource.size());
 780   }
 781 #endif  // IDR_AUDIO_SPATIALIZATION_T000_P000
 782
 783   NOTREACHED();
 784   return WebData();
 785 }
 786
 787 struct DataResource {
 788   const char* name;
 789   int id;
 790   ui::ScaleFactor scale_factor;
 791 };
 792
 793 const DataResource kDataResources[] = {
 794     {"missingImage", IDR_BROKENIMAGE, ui::SCALE_FACTOR_100P},
 795     {"missingImage@2x", IDR_BROKENIMAGE, ui::SCALE_FACTOR_200P},
 796     {"mediaplayerPause", IDR_MEDIAPLAYER_PAUSE_BUTTON, ui::SCALE_FACTOR_100P},
 797     {"mediaplayerPauseHover",
 798      IDR_MEDIAPLAYER_PAUSE_BUTTON_HOVER,
 799      ui::SCALE_FACTOR_100P},
 800     {"mediaplayerPauseDown",
 801      IDR_MEDIAPLAYER_PAUSE_BUTTON_DOWN,
 802      ui::SCALE_FACTOR_100P},
 803     {"mediaplayerPlay", IDR_MEDIAPLAYER_PLAY_BUTTON, ui::SCALE_FACTOR_100P},
 804     {"mediaplayerPlayHover",
 805      IDR_MEDIAPLAYER_PLAY_BUTTON_HOVER,
 806      ui::SCALE_FACTOR_100P},
 807     {"mediaplayerPlayDown",
 808      IDR_MEDIAPLAYER_PLAY_BUTTON_DOWN,
 809      ui::SCALE_FACTOR_100P},
 810     {"mediaplayerPlayDisabled",
 811      IDR_MEDIAPLAYER_PLAY_BUTTON_DISABLED,
 812      ui::SCALE_FACTOR_100P},
 813     {"mediaplayerSoundLevel3",
 814      IDR_MEDIAPLAYER_SOUND_LEVEL3_BUTTON,
 815      ui::SCALE_FACTOR_100P},
 816     {"mediaplayerSoundLevel3Hover",
 817      IDR_MEDIAPLAYER_SOUND_LEVEL3_BUTTON_HOVER,
 818      ui::SCALE_FACTOR_100P},
 819     {"mediaplayerSoundLevel3Down",
 820      IDR_MEDIAPLAYER_SOUND_LEVEL3_BUTTON_DOWN,
 821      ui::SCALE_FACTOR_100P},
 822     {"mediaplayerSoundLevel2",
 823      IDR_MEDIAPLAYER_SOUND_LEVEL2_BUTTON,
 824      ui::SCALE_FACTOR_100P},
 825     {"mediaplayerSoundLevel2Hover",
 826      IDR_MEDIAPLAYER_SOUND_LEVEL2_BUTTON_HOVER,
 827      ui::SCALE_FACTOR_100P},
 828     {"mediaplayerSoundLevel2Down",
 829      IDR_MEDIAPLAYER_SOUND_LEVEL2_BUTTON_DOWN,
 830      ui::SCALE_FACTOR_100P},
 831     {"mediaplayerSoundLevel1",
 832      IDR_MEDIAPLAYER_SOUND_LEVEL1_BUTTON,
 833      ui::SCALE_FACTOR_100P},
 834     {"mediaplayerSoundLevel1Hover",
 835      IDR_MEDIAPLAYER_SOUND_LEVEL1_BUTTON_HOVER,
 836      ui::SCALE_FACTOR_100P},
 837     {"mediaplayerSoundLevel1Down",
 838      IDR_MEDIAPLAYER_SOUND_LEVEL1_BUTTON_DOWN,
 839      ui::SCALE_FACTOR_100P},
 840     {"mediaplayerSoundLevel0",
 841      IDR_MEDIAPLAYER_SOUND_LEVEL0_BUTTON,
 842      ui::SCALE_FACTOR_100P},
 843     {"mediaplayerSoundLevel0Hover",
 844      IDR_MEDIAPLAYER_SOUND_LEVEL0_BUTTON_HOVER,
 845      ui::SCALE_FACTOR_100P},
 846     {"mediaplayerSoundLevel0Down",
 847      IDR_MEDIAPLAYER_SOUND_LEVEL0_BUTTON_DOWN,
 848      ui::SCALE_FACTOR_100P},
 849     {"mediaplayerSoundDisabled",
 850      IDR_MEDIAPLAYER_SOUND_DISABLED,
 851      ui::SCALE_FACTOR_100P},
 852     {"mediaplayerSliderThumb",
 853      IDR_MEDIAPLAYER_SLIDER_THUMB,
 854      ui::SCALE_FACTOR_100P},
 855     {"mediaplayerSliderThumbHover",
 856      IDR_MEDIAPLAYER_SLIDER_THUMB_HOVER,
 857      ui::SCALE_FACTOR_100P},
 858     {"mediaplayerSliderThumbDown",
 859      IDR_MEDIAPLAYER_SLIDER_THUMB_DOWN,
 860      ui::SCALE_FACTOR_100P},
 861     {"mediaplayerVolumeSliderThumb",
 862      IDR_MEDIAPLAYER_VOLUME_SLIDER_THUMB,
 863      ui::SCALE_FACTOR_100P},
 864     {"mediaplayerVolumeSliderThumbHover",
 865      IDR_MEDIAPLAYER_VOLUME_SLIDER_THUMB_HOVER,
 866      ui::SCALE_FACTOR_100P},
 867     {"mediaplayerVolumeSliderThumbDown",
 868      IDR_MEDIAPLAYER_VOLUME_SLIDER_THUMB_DOWN,
 869      ui::SCALE_FACTOR_100P},
 870     {"mediaplayerVolumeSliderThumbDisabled",
 871      IDR_MEDIAPLAYER_VOLUME_SLIDER_THUMB_DISABLED,
 872      ui::SCALE_FACTOR_100P},
 873     {"mediaplayerClosedCaption",
 874      IDR_MEDIAPLAYER_CLOSEDCAPTION_BUTTON,
 875      ui::SCALE_FACTOR_100P},
 876     {"mediaplayerClosedCaptionHover",
 877      IDR_MEDIAPLAYER_CLOSEDCAPTION_BUTTON_HOVER,
 878      ui::SCALE_FACTOR_100P},
 879     {"mediaplayerClosedCaptionDown",
 880      IDR_MEDIAPLAYER_CLOSEDCAPTION_BUTTON_DOWN,
 881      ui::SCALE_FACTOR_100P},
 882     {"mediaplayerClosedCaptionDisabled",
 883      IDR_MEDIAPLAYER_CLOSEDCAPTION_BUTTON_DISABLED,
 884      ui::SCALE_FACTOR_100P},
 885     {"mediaplayerFullscreen",
 886      IDR_MEDIAPLAYER_FULLSCREEN_BUTTON,
 887      ui::SCALE_FACTOR_100P},
 888     {"mediaplayerFullscreenHover",
 889      IDR_MEDIAPLAYER_FULLSCREEN_BUTTON_HOVER,
 890      ui::SCALE_FACTOR_100P},
 891     {"mediaplayerFullscreenDown",
 892      IDR_MEDIAPLAYER_FULLSCREEN_BUTTON_DOWN,
 893      ui::SCALE_FACTOR_100P},
 894     {"mediaplayerCastOff",
 895      IDR_MEDIAPLAYER_CAST_BUTTON_OFF,
 896      ui::SCALE_FACTOR_100P},
 897     {"mediaplayerCastOn",
 898      IDR_MEDIAPLAYER_CAST_BUTTON_ON,
 899      ui::SCALE_FACTOR_100P},
 900     {"mediaplayerFullscreenDisabled",
 901      IDR_MEDIAPLAYER_FULLSCREEN_BUTTON_DISABLED,
 902      ui::SCALE_FACTOR_100P},
 903     {"mediaplayerOverlayCastOff",
 904      IDR_MEDIAPLAYER_OVERLAY_CAST_BUTTON_OFF,
 905      ui::SCALE_FACTOR_100P},
 906     {"mediaplayerOverlayPlay",
 907      IDR_MEDIAPLAYER_OVERLAY_PLAY_BUTTON,
 908      ui::SCALE_FACTOR_100P},
 909     {"panIcon", IDR_PAN_SCROLL_ICON, ui::SCALE_FACTOR_100P},
 910     {"searchCancel", IDR_SEARCH_CANCEL, ui::SCALE_FACTOR_100P},
 911     {"searchCancelPressed", IDR_SEARCH_CANCEL_PRESSED, ui::SCALE_FACTOR_100P},
 912     {"searchMagnifier", IDR_SEARCH_MAGNIFIER, ui::SCALE_FACTOR_100P},
 913     {"searchMagnifierResults",
 914      IDR_SEARCH_MAGNIFIER_RESULTS,
 915      ui::SCALE_FACTOR_100P},
 916     {"textAreaResizeCorner", IDR_TEXTAREA_RESIZER, ui::SCALE_FACTOR_100P},
 917     {"textAreaResizeCorner@2x", IDR_TEXTAREA_RESIZER, ui::SCALE_FACTOR_200P},
 918     {"generatePassword", IDR_PASSWORD_GENERATION_ICON, ui::SCALE_FACTOR_100P},
 919     {"generatePasswordHover",
 920      IDR_PASSWORD_GENERATION_ICON_HOVER,
 921      ui::SCALE_FACTOR_100P},
 922     {"html.css", IDR_UASTYLE_HTML_CSS, ui::SCALE_FACTOR_NONE},
 923     {"quirks.css", IDR_UASTYLE_QUIRKS_CSS, ui::SCALE_FACTOR_NONE},
 924     {"view-source.css", IDR_UASTYLE_VIEW_SOURCE_CSS, ui::SCALE_FACTOR_NONE},
 925     {"themeChromium.css",
 926      IDR_UASTYLE_THEME_CHROMIUM_CSS,
 927      ui::SCALE_FACTOR_NONE},
 928 #if defined(OS_ANDROID)
 929     {"themeChromiumAndroid.css",
 930      IDR_UASTYLE_THEME_CHROMIUM_ANDROID_CSS,
 931      ui::SCALE_FACTOR_NONE},
 932     {"mediaControlsAndroid.css",
 933      IDR_UASTYLE_MEDIA_CONTROLS_ANDROID_CSS,
 934      ui::SCALE_FACTOR_NONE},
 935 #endif
 936 #if !defined(OS_WIN)
 937     {"themeChromiumLinux.css",
 938      IDR_UASTYLE_THEME_CHROMIUM_LINUX_CSS,
 939      ui::SCALE_FACTOR_NONE},
 940 #endif
 941     {"themeChromiumSkia.css",
 942      IDR_UASTYLE_THEME_CHROMIUM_SKIA_CSS,
 943      ui::SCALE_FACTOR_NONE},
 944     {"themeInputMultipleFields.css",
 945      IDR_UASTYLE_THEME_INPUT_MULTIPLE_FIELDS_CSS,
 946      ui::SCALE_FACTOR_NONE},
 947 #if defined(OS_MACOSX)
 948     {"themeMac.css", IDR_UASTYLE_THEME_MAC_CSS, ui::SCALE_FACTOR_NONE},
 949 #endif
 950     {"themeWin.css", IDR_UASTYLE_THEME_WIN_CSS, ui::SCALE_FACTOR_NONE},
 951     {"themeWinQuirks.css",
 952      IDR_UASTYLE_THEME_WIN_QUIRKS_CSS,
 953      ui::SCALE_FACTOR_NONE},
 954     {"svg.css", IDR_UASTYLE_SVG_CSS, ui::SCALE_FACTOR_NONE},
 955     {"navigationTransitions.css",
 956      IDR_UASTYLE_NAVIGATION_TRANSITIONS_CSS,
 957      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 (StartsWithASCII(name, "IRC_Composite", true) ||
1024       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::TimeTicks::NowFromSystemTraceTime().ToInternalValue() /
1089       static_cast<double>(base::Time::kMicrosecondsPerSecond);
1090 }
1091
1092 void BlinkPlatformImpl::cryptographicallyRandomValues(
1093     unsigned char* buffer, size_t length) {
1094   base::RandBytes(buffer, length);
1095 }
1096
1097 void BlinkPlatformImpl::setSharedTimerFiredFunction(void (*func)()) {
1098   shared_timer_func_ = func;
1099 }
1100
1101 void BlinkPlatformImpl::setSharedTimerFireInterval(
1102     double interval_seconds) {
1103   shared_timer_fire_time_ = interval_seconds + monotonicallyIncreasingTime();
1104   if (shared_timer_suspended_) {
1105     shared_timer_fire_time_was_set_while_suspended_ = true;
1106     return;
1107   }
1108
1109   // By converting between double and int64 representation, we run the risk
1110   // of losing precision due to rounding errors. Performing computations in
1111   // microseconds reduces this risk somewhat. But there still is the potential
1112   // of us computing a fire time for the timer that is shorter than what we
1113   // need.
1114   // As the event loop will check event deadlines prior to actually firing
1115   // them, there is a risk of needlessly rescheduling events and of
1116   // needlessly looping if sleep times are too short even by small amounts.
1117   // This results in measurable performance degradation unless we use ceil() to
1118   // always round up the sleep times.
1119   int64 interval = static_cast<int64>(
1120       ceil(interval_seconds * base::Time::kMillisecondsPerSecond)
1121       * base::Time::kMicrosecondsPerMillisecond);
1122
1123   if (interval < 0)
1124     interval = 0;
1125
1126   shared_timer_.Stop();
1127   shared_timer_.Start(FROM_HERE, base::TimeDelta::FromMicroseconds(interval),
1128                       this, &BlinkPlatformImpl::DoTimeout);
1129   OnStartSharedTimer(base::TimeDelta::FromMicroseconds(interval));
1130 }
1131
1132 void BlinkPlatformImpl::stopSharedTimer() {
1133   shared_timer_.Stop();
1134 }
1135
1136 blink::WebGestureCurve* BlinkPlatformImpl::createFlingAnimationCurve(
1137     blink::WebGestureDevice device_source,
1138     const blink::WebFloatPoint& velocity,
1139     const blink::WebSize& cumulative_scroll) {
1140   return ui::WebGestureCurveImpl::CreateFromDefaultPlatformCurve(
1141              gfx::Vector2dF(velocity.x, velocity.y),
1142              gfx::Vector2dF(cumulative_scroll.width, cumulative_scroll.height),
1143              IsMainThread()).release();
1144 }
1145
1146 void BlinkPlatformImpl::didStartWorkerRunLoop() {
1147   WorkerTaskRunner* worker_task_runner = WorkerTaskRunner::Instance();
1148   worker_task_runner->OnWorkerRunLoopStarted();
1149 }
1150
1151 void BlinkPlatformImpl::didStopWorkerRunLoop() {
1152   WorkerTaskRunner* worker_task_runner = WorkerTaskRunner::Instance();
1153   worker_task_runner->OnWorkerRunLoopStopped();
1154 }
1155
1156 blink::WebCrypto* BlinkPlatformImpl::crypto() {
1157   return &web_crypto_;
1158 }
1159
1160 blink::WebGeofencingProvider* BlinkPlatformImpl::geofencingProvider() {
1161   return geofencing_provider_.get();
1162 }
1163
1164 blink::WebBluetooth* BlinkPlatformImpl::bluetooth() {
1165   return bluetooth_.get();
1166 }
1167
1168 blink::WebNotificationManager*
1169 BlinkPlatformImpl::notificationManager() {
1170   if (!thread_safe_sender_.get() || !notification_dispatcher_.get())
1171     return nullptr;
1172
1173   return NotificationManager::ThreadSpecificInstance(
1174       thread_safe_sender_.get(),
1175       main_thread_task_runner_.get(),
1176       notification_dispatcher_.get());
1177 }
1178
1179 blink::WebPushProvider* BlinkPlatformImpl::pushProvider() {
1180   if (!thread_safe_sender_.get() || !push_dispatcher_.get())
1181     return nullptr;
1182
1183   return PushProvider::ThreadSpecificInstance(thread_safe_sender_.get(),
1184                                               push_dispatcher_.get());
1185 }
1186
1187 blink::WebNavigatorConnectProvider*
1188 BlinkPlatformImpl::navigatorConnectProvider() {
1189   if (!thread_safe_sender_.get())
1190     return nullptr;
1191
1192   return NavigatorConnectProvider::ThreadSpecificInstance(
1193       thread_safe_sender_.get(), main_thread_task_runner_);
1194 }
1195
1196 blink::WebPermissionClient* BlinkPlatformImpl::permissionClient() {
1197   if (!permission_client_.get())
1198     return nullptr;
1199
1200   if (IsMainThread())
1201     return permission_client_.get();
1202
1203   return PermissionDispatcherThreadProxy::GetThreadInstance(
1204       main_thread_task_runner_.get(), permission_client_.get());
1205 }
1206
1207 blink::WebSyncProvider* BlinkPlatformImpl::backgroundSyncProvider() {
1208   if (!sync_provider_.get())
1209     return nullptr;
1210
1211   if (IsMainThread())
1212     return sync_provider_.get();
1213
1214   return BackgroundSyncProviderThreadProxy::GetThreadInstance(
1215       main_thread_task_runner_.get(), sync_provider_.get());
1216 }
1217
1218 WebThemeEngine* BlinkPlatformImpl::themeEngine() {
1219   return &native_theme_engine_;
1220 }
1221
1222 WebFallbackThemeEngine* BlinkPlatformImpl::fallbackThemeEngine() {
1223   return &fallback_theme_engine_;
1224 }
1225
1226 blink::Platform::FileHandle BlinkPlatformImpl::databaseOpenFile(
1227     const blink::WebString& vfs_file_name, int desired_flags) {
1228 #if defined(OS_WIN)
1229   return INVALID_HANDLE_VALUE;
1230 #elif defined(OS_POSIX)
1231   return -1;
1232 #endif
1233 }
1234
1235 int BlinkPlatformImpl::databaseDeleteFile(
1236     const blink::WebString& vfs_file_name, bool sync_dir) {
1237   return -1;
1238 }
1239
1240 long BlinkPlatformImpl::databaseGetFileAttributes(
1241     const blink::WebString& vfs_file_name) {
1242   return 0;
1243 }
1244
1245 long long BlinkPlatformImpl::databaseGetFileSize(
1246     const blink::WebString& vfs_file_name) {
1247   return 0;
1248 }
1249
1250 long long BlinkPlatformImpl::databaseGetSpaceAvailableForOrigin(
1251     const blink::WebString& origin_identifier) {
1252   return 0;
1253 }
1254
1255 bool BlinkPlatformImpl::databaseSetFileSize(
1256     const blink::WebString& vfs_file_name, long long size) {
1257   return false;
1258 }
1259
1260 blink::WebString BlinkPlatformImpl::signedPublicKeyAndChallengeString(
1261     unsigned key_size_index,
1262     const blink::WebString& challenge,
1263     const blink::WebURL& url) {
1264   return blink::WebString("");
1265 }
1266
1267 static scoped_ptr<base::ProcessMetrics> CurrentProcessMetrics() {
1268   using base::ProcessMetrics;
1269 #if defined(OS_MACOSX)
1270   return scoped_ptr<ProcessMetrics>(
1271       // The default port provider is sufficient to get data for the current
1272       // process.
1273       ProcessMetrics::CreateProcessMetrics(base::GetCurrentProcessHandle(),
1274                                            NULL));
1275 #else
1276   return scoped_ptr<ProcessMetrics>(
1277       ProcessMetrics::CreateProcessMetrics(base::GetCurrentProcessHandle()));
1278 #endif
1279 }
1280
1281 static size_t getMemoryUsageMB(bool bypass_cache) {
1282   size_t current_mem_usage = 0;
1283   MemoryUsageCache* mem_usage_cache_singleton = MemoryUsageCache::GetInstance();
1284   if (!bypass_cache &&
1285       mem_usage_cache_singleton->IsCachedValueValid(&current_mem_usage))
1286     return current_mem_usage;
1287
1288   current_mem_usage = GetMemoryUsageKB() >> 10;
1289   mem_usage_cache_singleton->SetMemoryValue(current_mem_usage);
1290   return current_mem_usage;
1291 }
1292
1293 size_t BlinkPlatformImpl::memoryUsageMB() {
1294   return getMemoryUsageMB(false);
1295 }
1296
1297 size_t BlinkPlatformImpl::actualMemoryUsageMB() {
1298   return getMemoryUsageMB(true);
1299 }
1300
1301 size_t BlinkPlatformImpl::physicalMemoryMB() {
1302   return static_cast<size_t>(base::SysInfo::AmountOfPhysicalMemoryMB());
1303 }
1304
1305 size_t BlinkPlatformImpl::virtualMemoryLimitMB() {
1306   return static_cast<size_t>(base::SysInfo::AmountOfVirtualMemoryMB());
1307 }
1308
1309 size_t BlinkPlatformImpl::numberOfProcessors() {
1310   return static_cast<size_t>(base::SysInfo::NumberOfProcessors());
1311 }
1312
1313 bool BlinkPlatformImpl::processMemorySizesInBytes(
1314     size_t* private_bytes,
1315     size_t* shared_bytes) {
1316   return CurrentProcessMetrics()->GetMemoryBytes(private_bytes, shared_bytes);
1317 }
1318
1319 bool BlinkPlatformImpl::memoryAllocatorWasteInBytes(size_t* size) {
1320   return base::allocator::GetAllocatorWasteSize(size);
1321 }
1322
1323 blink::WebDiscardableMemory*
1324 BlinkPlatformImpl::allocateAndLockDiscardableMemory(size_t bytes) {
1325   return content::WebDiscardableMemoryImpl::CreateLockedMemory(bytes).release();
1326 }
1327
1328 size_t BlinkPlatformImpl::maxDecodedImageBytes() {
1329 #if defined(OS_ANDROID)
1330   if (base::SysInfo::IsLowEndDevice()) {
1331     // Limit image decoded size to 3M pixels on low end devices.
1332     // 4 is maximum number of bytes per pixel.
1333     return 3 * 1024 * 1024 * 4;
1334   }
1335   // For other devices, limit decoded image size based on the amount of physical
1336   // memory.
1337   // In some cases all physical memory is not accessible by Chromium, as it can
1338   // be reserved for direct use by certain hardware. Thus, we set the limit so
1339   // that 1.6GB of reported physical memory on a 2GB device is enough to set the
1340   // limit at 16M pixels, which is a desirable value since 4K*4K is a relatively
1341   // common texture size.
1342   return base::SysInfo::AmountOfPhysicalMemory() / 25;
1343 #else
1344   return noDecodedImageByteLimit;
1345 #endif
1346 }
1347
1348 void BlinkPlatformImpl::SuspendSharedTimer() {
1349   ++shared_timer_suspended_;
1350 }
1351
1352 void BlinkPlatformImpl::ResumeSharedTimer() {
1353   DCHECK_GT(shared_timer_suspended_, 0);
1354
1355   // The shared timer may have fired or been adjusted while we were suspended.
1356   if (--shared_timer_suspended_ == 0 &&
1357       (!shared_timer_.IsRunning() ||
1358        shared_timer_fire_time_was_set_while_suspended_)) {
1359     shared_timer_fire_time_was_set_while_suspended_ = false;
1360     setSharedTimerFireInterval(
1361         shared_timer_fire_time_ - monotonicallyIncreasingTime());
1362   }
1363 }
1364
1365 scoped_refptr<base::SingleThreadTaskRunner>
1366 BlinkPlatformImpl::MainTaskRunnerForCurrentThread() {
1367   if (main_thread_task_runner_.get() &&
1368       main_thread_task_runner_->BelongsToCurrentThread()) {
1369     return main_thread_task_runner_;
1370   } else {
1371     return base::MessageLoopProxy::current();
1372   }
1373 }
1374
1375 bool BlinkPlatformImpl::IsMainThread() const {
1376   return main_thread_task_runner_.get() &&
1377          main_thread_task_runner_->BelongsToCurrentThread();
1378 }
1379
1380 WebString BlinkPlatformImpl::domCodeStringFromEnum(int dom_code) {
1381   return WebString::fromUTF8(ui::KeycodeConverter::DomCodeToCodeString(
1382       static_cast<ui::DomCode>(dom_code)));
1383 }
1384
1385 int BlinkPlatformImpl::domEnumFromCodeString(const WebString& code) {
1386   return static_cast<int>(ui::KeycodeConverter::CodeStringToDomCode(
1387       code.utf8().data()));
1388 }
1389
1390 }  // namespace content