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/threading/platform_thread.h"
  27 #include "base/time/time.h"
  28 #include "blink/public/resources/grit/blink_resources.h"
  29 #include "content/app/resources/grit/content_resources.h"
  30 #include "content/app/strings/grit/content_strings.h"
  31 #include "content/child/bluetooth/web_bluetooth_impl.h"
  32 #include "content/child/child_thread_impl.h"
  33 #include "content/child/content_child_helpers.h"
  34 #include "content/child/geofencing/web_geofencing_provider_impl.h"
  35 #include "content/child/navigator_connect/navigator_connect_provider.h"
  36 #include "content/child/notifications/notification_dispatcher.h"
  37 #include "content/child/notifications/notification_manager.h"
  38 #include "content/child/push_messaging/push_dispatcher.h"
  39 #include "content/child/push_messaging/push_provider.h"
  40 #include "content/child/thread_safe_sender.h"
  41 #include "content/child/web_discardable_memory_impl.h"
  42 #include "content/child/web_gesture_curve_impl.h"
  43 #include "content/child/web_url_loader_impl.h"
  44 #include "content/child/websocket_bridge.h"
  45 #include "content/child/webthread_impl.h"
  46 #include "content/child/worker_task_runner.h"
  47 #include "content/public/common/content_client.h"
  48 #include "net/base/data_url.h"
  49 #include "net/base/mime_util.h"
  50 #include "net/base/net_errors.h"
  51 #include "net/base/net_util.h"
  52 #include "third_party/WebKit/public/platform/WebConvertableToTraceFormat.h"
  53 #include "third_party/WebKit/public/platform/WebData.h"
  54 #include "third_party/WebKit/public/platform/WebFloatPoint.h"
  55 #include "third_party/WebKit/public/platform/WebString.h"
  56 #include "third_party/WebKit/public/platform/WebURL.h"
  57 #include "third_party/WebKit/public/platform/WebWaitableEvent.h"
  58 #include "third_party/WebKit/public/web/WebSecurityOrigin.h"
  59 #include "ui/base/layout.h"
  60 #include "ui/events/keycodes/dom4/keycode_converter.h"
  61
  62 using blink::WebData;
  63 using blink::WebFallbackThemeEngine;
  64 using blink::WebLocalizedString;
  65 using blink::WebString;
  66 using blink::WebThemeEngine;
  67 using blink::WebURL;
  68 using blink::WebURLError;
  69 using blink::WebURLLoader;
  70
  71 namespace content {
  72
  73 namespace {
  74
  75 class WebWaitableEventImpl : public blink::WebWaitableEvent {
  76  public:
  77   WebWaitableEventImpl() : impl_(new base::WaitableEvent(false, false)) {}
  78   virtual ~WebWaitableEventImpl() {}
  79
  80   virtual void wait() { impl_->Wait(); }
  81   virtual void signal() { impl_->Signal(); }
  82
  83   base::WaitableEvent* impl() {
  84     return impl_.get();
  85   }
  86
  87  private:
  88   scoped_ptr<base::WaitableEvent> impl_;
  89   DISALLOW_COPY_AND_ASSIGN(WebWaitableEventImpl);
  90 };
  91
  92 // A simple class to cache the memory usage for a given amount of time.
  93 class MemoryUsageCache {
  94  public:
  95   // Retrieves the Singleton.
  96   static MemoryUsageCache* GetInstance() {
  97     return Singleton<MemoryUsageCache>::get();
  98   }
  99
 100   MemoryUsageCache() : memory_value_(0) { Init(); }
 101   ~MemoryUsageCache() {}
 102
 103   void Init() {
 104     const unsigned int kCacheSeconds = 1;
 105     cache_valid_time_ = base::TimeDelta::FromSeconds(kCacheSeconds);
 106   }
 107
 108   // Returns true if the cached value is fresh.
 109   // Returns false if the cached value is stale, or if |cached_value| is NULL.
 110   bool IsCachedValueValid(size_t* cached_value) {
 111     base::AutoLock scoped_lock(lock_);
 112     if (!cached_value)
 113       return false;
 114     if (base::Time::Now() - last_updated_time_ > cache_valid_time_)
 115       return false;
 116     *cached_value = memory_value_;
 117     return true;
 118   };
 119
 120   // Setter for |memory_value_|, refreshes |last_updated_time_|.
 121   void SetMemoryValue(const size_t value) {
 122     base::AutoLock scoped_lock(lock_);
 123     memory_value_ = value;
 124     last_updated_time_ = base::Time::Now();
 125   }
 126
 127  private:
 128   // The cached memory value.
 129   size_t memory_value_;
 130
 131   // How long the cached value should remain valid.
 132   base::TimeDelta cache_valid_time_;
 133
 134   // The last time the cached value was updated.
 135   base::Time last_updated_time_;
 136
 137   base::Lock lock_;
 138 };
 139
 140 class ConvertableToTraceFormatWrapper
 141     : public base::trace_event::ConvertableToTraceFormat {
 142  public:
 143   explicit ConvertableToTraceFormatWrapper(
 144       const blink::WebConvertableToTraceFormat& convertable)
 145       : convertable_(convertable) {}
 146   void AppendAsTraceFormat(std::string* out) const override {
 147     *out += convertable_.asTraceFormat().utf8();
 148   }
 149
 150  private:
 151   ~ConvertableToTraceFormatWrapper() override {}
 152
 153   blink::WebConvertableToTraceFormat convertable_;
 154 };
 155
 156 }  // namespace
 157
 158 static int ToMessageID(WebLocalizedString::Name name) {
 159   switch (name) {
 160     case WebLocalizedString::AXAMPMFieldText:
 161       return IDS_AX_AM_PM_FIELD_TEXT;
 162     case WebLocalizedString::AXButtonActionVerb:
 163       return IDS_AX_BUTTON_ACTION_VERB;
 164     case WebLocalizedString::AXCalendarShowMonthSelector:
 165       return IDS_AX_CALENDAR_SHOW_MONTH_SELECTOR;
 166     case WebLocalizedString::AXCalendarShowNextMonth:
 167       return IDS_AX_CALENDAR_SHOW_NEXT_MONTH;
 168     case WebLocalizedString::AXCalendarShowPreviousMonth:
 169       return IDS_AX_CALENDAR_SHOW_PREVIOUS_MONTH;
 170     case WebLocalizedString::AXCalendarWeekDescription:
 171       return IDS_AX_CALENDAR_WEEK_DESCRIPTION;
 172     case WebLocalizedString::AXCheckedCheckBoxActionVerb:
 173       return IDS_AX_CHECKED_CHECK_BOX_ACTION_VERB;
 174     case WebLocalizedString::AXDateTimeFieldEmptyValueText:
 175       return IDS_AX_DATE_TIME_FIELD_EMPTY_VALUE_TEXT;
 176     case WebLocalizedString::AXDayOfMonthFieldText:
 177       return IDS_AX_DAY_OF_MONTH_FIELD_TEXT;
 178     case WebLocalizedString::AXHeadingText:
 179       return IDS_AX_ROLE_HEADING;
 180     case WebLocalizedString::AXHourFieldText:
 181       return IDS_AX_HOUR_FIELD_TEXT;
 182     case WebLocalizedString::AXImageMapText:
 183       return IDS_AX_ROLE_IMAGE_MAP;
 184     case WebLocalizedString::AXLinkActionVerb:
 185       return IDS_AX_LINK_ACTION_VERB;
 186     case WebLocalizedString::AXLinkText:
 187       return IDS_AX_ROLE_LINK;
 188     case WebLocalizedString::AXListMarkerText:
 189       return IDS_AX_ROLE_LIST_MARKER;
 190     case WebLocalizedString::AXMediaDefault:
 191       return IDS_AX_MEDIA_DEFAULT;
 192     case WebLocalizedString::AXMediaAudioElement:
 193       return IDS_AX_MEDIA_AUDIO_ELEMENT;
 194     case WebLocalizedString::AXMediaVideoElement:
 195       return IDS_AX_MEDIA_VIDEO_ELEMENT;
 196     case WebLocalizedString::AXMediaMuteButton:
 197       return IDS_AX_MEDIA_MUTE_BUTTON;
 198     case WebLocalizedString::AXMediaUnMuteButton:
 199       return IDS_AX_MEDIA_UNMUTE_BUTTON;
 200     case WebLocalizedString::AXMediaPlayButton:
 201       return IDS_AX_MEDIA_PLAY_BUTTON;
 202     case WebLocalizedString::AXMediaPauseButton:
 203       return IDS_AX_MEDIA_PAUSE_BUTTON;
 204     case WebLocalizedString::AXMediaSlider:
 205       return IDS_AX_MEDIA_SLIDER;
 206     case WebLocalizedString::AXMediaSliderThumb:
 207       return IDS_AX_MEDIA_SLIDER_THUMB;
 208     case WebLocalizedString::AXMediaCurrentTimeDisplay:
 209       return IDS_AX_MEDIA_CURRENT_TIME_DISPLAY;
 210     case WebLocalizedString::AXMediaTimeRemainingDisplay:
 211       return IDS_AX_MEDIA_TIME_REMAINING_DISPLAY;
 212     case WebLocalizedString::AXMediaStatusDisplay:
 213       return IDS_AX_MEDIA_STATUS_DISPLAY;
 214     case WebLocalizedString::AXMediaEnterFullscreenButton:
 215       return IDS_AX_MEDIA_ENTER_FULL_SCREEN_BUTTON;
 216     case WebLocalizedString::AXMediaExitFullscreenButton:
 217       return IDS_AX_MEDIA_EXIT_FULL_SCREEN_BUTTON;
 218     case WebLocalizedString::AXMediaShowClosedCaptionsButton:
 219       return IDS_AX_MEDIA_SHOW_CLOSED_CAPTIONS_BUTTON;
 220     case WebLocalizedString::AXMediaHideClosedCaptionsButton:
 221       return IDS_AX_MEDIA_HIDE_CLOSED_CAPTIONS_BUTTON;
 222     case WebLocalizedString::AxMediaCastOffButton:
 223       return IDS_AX_MEDIA_CAST_OFF_BUTTON;
 224     case WebLocalizedString::AxMediaCastOnButton:
 225       return IDS_AX_MEDIA_CAST_ON_BUTTON;
 226     case WebLocalizedString::AXMediaAudioElementHelp:
 227       return IDS_AX_MEDIA_AUDIO_ELEMENT_HELP;
 228     case WebLocalizedString::AXMediaVideoElementHelp:
 229       return IDS_AX_MEDIA_VIDEO_ELEMENT_HELP;
 230     case WebLocalizedString::AXMediaMuteButtonHelp:
 231       return IDS_AX_MEDIA_MUTE_BUTTON_HELP;
 232     case WebLocalizedString::AXMediaUnMuteButtonHelp:
 233       return IDS_AX_MEDIA_UNMUTE_BUTTON_HELP;
 234     case WebLocalizedString::AXMediaPlayButtonHelp:
 235       return IDS_AX_MEDIA_PLAY_BUTTON_HELP;
 236     case WebLocalizedString::AXMediaPauseButtonHelp:
 237       return IDS_AX_MEDIA_PAUSE_BUTTON_HELP;
 238     case WebLocalizedString::AXMediaAudioSliderHelp:
 239       return IDS_AX_MEDIA_AUDIO_SLIDER_HELP;
 240     case WebLocalizedString::AXMediaVideoSliderHelp:
 241       return IDS_AX_MEDIA_VIDEO_SLIDER_HELP;
 242     case WebLocalizedString::AXMediaSliderThumbHelp:
 243       return IDS_AX_MEDIA_SLIDER_THUMB_HELP;
 244     case WebLocalizedString::AXMediaCurrentTimeDisplayHelp:
 245       return IDS_AX_MEDIA_CURRENT_TIME_DISPLAY_HELP;
 246     case WebLocalizedString::AXMediaTimeRemainingDisplayHelp:
 247       return IDS_AX_MEDIA_TIME_REMAINING_DISPLAY_HELP;
 248     case WebLocalizedString::AXMediaStatusDisplayHelp:
 249       return IDS_AX_MEDIA_STATUS_DISPLAY_HELP;
 250     case WebLocalizedString::AXMediaEnterFullscreenButtonHelp:
 251       return IDS_AX_MEDIA_ENTER_FULL_SCREEN_BUTTON_HELP;
 252     case WebLocalizedString::AXMediaExitFullscreenButtonHelp:
 253       return IDS_AX_MEDIA_EXIT_FULL_SCREEN_BUTTON_HELP;
 254     case WebLocalizedString::AXMediaShowClosedCaptionsButtonHelp:
 255       return IDS_AX_MEDIA_SHOW_CLOSED_CAPTIONS_BUTTON_HELP;
 256     case WebLocalizedString::AXMediaHideClosedCaptionsButtonHelp:
 257       return IDS_AX_MEDIA_HIDE_CLOSED_CAPTIONS_BUTTON_HELP;
 258     case WebLocalizedString::AxMediaCastOffButtonHelp:
 259       return IDS_AX_MEDIA_CAST_OFF_BUTTON_HELP;
 260     case WebLocalizedString::AxMediaCastOnButtonHelp:
 261       return IDS_AX_MEDIA_CAST_ON_BUTTON_HELP;
 262     case WebLocalizedString::AXMillisecondFieldText:
 263       return IDS_AX_MILLISECOND_FIELD_TEXT;
 264     case WebLocalizedString::AXMinuteFieldText:
 265       return IDS_AX_MINUTE_FIELD_TEXT;
 266     case WebLocalizedString::AXMonthFieldText:
 267       return IDS_AX_MONTH_FIELD_TEXT;
 268     case WebLocalizedString::AXRadioButtonActionVerb:
 269       return IDS_AX_RADIO_BUTTON_ACTION_VERB;
 270     case WebLocalizedString::AXSecondFieldText:
 271       return IDS_AX_SECOND_FIELD_TEXT;
 272     case WebLocalizedString::AXTextFieldActionVerb:
 273       return IDS_AX_TEXT_FIELD_ACTION_VERB;
 274     case WebLocalizedString::AXUncheckedCheckBoxActionVerb:
 275       return IDS_AX_UNCHECKED_CHECK_BOX_ACTION_VERB;
 276     case WebLocalizedString::AXWebAreaText:
 277       return IDS_AX_ROLE_WEB_AREA;
 278     case WebLocalizedString::AXWeekOfYearFieldText:
 279       return IDS_AX_WEEK_OF_YEAR_FIELD_TEXT;
 280     case WebLocalizedString::AXYearFieldText:
 281       return IDS_AX_YEAR_FIELD_TEXT;
 282     case WebLocalizedString::CalendarClear:
 283       return IDS_FORM_CALENDAR_CLEAR;
 284     case WebLocalizedString::CalendarToday:
 285       return IDS_FORM_CALENDAR_TODAY;
 286     case WebLocalizedString::DateFormatDayInMonthLabel:
 287       return IDS_FORM_DATE_FORMAT_DAY_IN_MONTH;
 288     case WebLocalizedString::DateFormatMonthLabel:
 289       return IDS_FORM_DATE_FORMAT_MONTH;
 290     case WebLocalizedString::DateFormatYearLabel:
 291       return IDS_FORM_DATE_FORMAT_YEAR;
 292     case WebLocalizedString::DetailsLabel:
 293       return IDS_DETAILS_WITHOUT_SUMMARY_LABEL;
 294     case WebLocalizedString::FileButtonChooseFileLabel:
 295       return IDS_FORM_FILE_BUTTON_LABEL;
 296     case WebLocalizedString::FileButtonChooseMultipleFilesLabel:
 297       return IDS_FORM_MULTIPLE_FILES_BUTTON_LABEL;
 298     case WebLocalizedString::FileButtonNoFileSelectedLabel:
 299       return IDS_FORM_FILE_NO_FILE_LABEL;
 300     case WebLocalizedString::InputElementAltText:
 301       return IDS_FORM_INPUT_ALT;
 302     case WebLocalizedString::KeygenMenuHighGradeKeySize:
 303       return IDS_KEYGEN_HIGH_GRADE_KEY;
 304     case WebLocalizedString::KeygenMenuMediumGradeKeySize:
 305       return IDS_KEYGEN_MED_GRADE_KEY;
 306     case WebLocalizedString::MissingPluginText:
 307       return IDS_PLUGIN_INITIALIZATION_ERROR;
 308     case WebLocalizedString::MultipleFileUploadText:
 309       return IDS_FORM_FILE_MULTIPLE_UPLOAD;
 310     case WebLocalizedString::OtherColorLabel:
 311       return IDS_FORM_OTHER_COLOR_LABEL;
 312     case WebLocalizedString::OtherDateLabel:
 313         return IDS_FORM_OTHER_DATE_LABEL;
 314     case WebLocalizedString::OtherMonthLabel:
 315       return IDS_FORM_OTHER_MONTH_LABEL;
 316     case WebLocalizedString::OtherTimeLabel:
 317       return IDS_FORM_OTHER_TIME_LABEL;
 318     case WebLocalizedString::OtherWeekLabel:
 319       return IDS_FORM_OTHER_WEEK_LABEL;
 320     case WebLocalizedString::PlaceholderForDayOfMonthField:
 321       return IDS_FORM_PLACEHOLDER_FOR_DAY_OF_MONTH_FIELD;
 322     case WebLocalizedString::PlaceholderForMonthField:
 323       return IDS_FORM_PLACEHOLDER_FOR_MONTH_FIELD;
 324     case WebLocalizedString::PlaceholderForYearField:
 325       return IDS_FORM_PLACEHOLDER_FOR_YEAR_FIELD;
 326     case WebLocalizedString::ResetButtonDefaultLabel:
 327       return IDS_FORM_RESET_LABEL;
 328     case WebLocalizedString::SearchableIndexIntroduction:
 329       return IDS_SEARCHABLE_INDEX_INTRO;
 330     case WebLocalizedString::SearchMenuClearRecentSearchesText:
 331       return IDS_RECENT_SEARCHES_CLEAR;
 332     case WebLocalizedString::SearchMenuNoRecentSearchesText:
 333       return IDS_RECENT_SEARCHES_NONE;
 334     case WebLocalizedString::SearchMenuRecentSearchesText:
 335       return IDS_RECENT_SEARCHES;
 336     case WebLocalizedString::SelectMenuListText:
 337       return IDS_FORM_SELECT_MENU_LIST_TEXT;
 338     case WebLocalizedString::SubmitButtonDefaultLabel:
 339       return IDS_FORM_SUBMIT_LABEL;
 340     case WebLocalizedString::ThisMonthButtonLabel:
 341       return IDS_FORM_THIS_MONTH_LABEL;
 342     case WebLocalizedString::ThisWeekButtonLabel:
 343       return IDS_FORM_THIS_WEEK_LABEL;
 344     case WebLocalizedString::ValidationBadInputForDateTime:
 345       return IDS_FORM_VALIDATION_BAD_INPUT_DATETIME;
 346     case WebLocalizedString::ValidationBadInputForNumber:
 347       return IDS_FORM_VALIDATION_BAD_INPUT_NUMBER;
 348     case WebLocalizedString::ValidationPatternMismatch:
 349       return IDS_FORM_VALIDATION_PATTERN_MISMATCH;
 350     case WebLocalizedString::ValidationRangeOverflow:
 351       return IDS_FORM_VALIDATION_RANGE_OVERFLOW;
 352     case WebLocalizedString::ValidationRangeOverflowDateTime:
 353       return IDS_FORM_VALIDATION_RANGE_OVERFLOW_DATETIME;
 354     case WebLocalizedString::ValidationRangeUnderflow:
 355       return IDS_FORM_VALIDATION_RANGE_UNDERFLOW;
 356     case WebLocalizedString::ValidationRangeUnderflowDateTime:
 357       return IDS_FORM_VALIDATION_RANGE_UNDERFLOW_DATETIME;
 358     case WebLocalizedString::ValidationStepMismatch:
 359       return IDS_FORM_VALIDATION_STEP_MISMATCH;
 360     case WebLocalizedString::ValidationStepMismatchCloseToLimit:
 361       return IDS_FORM_VALIDATION_STEP_MISMATCH_CLOSE_TO_LIMIT;
 362     case WebLocalizedString::ValidationTooLong:
 363       return IDS_FORM_VALIDATION_TOO_LONG;
 364     case WebLocalizedString::ValidationTooShort:
 365       return IDS_FORM_VALIDATION_TOO_SHORT;
 366     case WebLocalizedString::ValidationTypeMismatch:
 367       return IDS_FORM_VALIDATION_TYPE_MISMATCH;
 368     case WebLocalizedString::ValidationTypeMismatchForEmail:
 369       return IDS_FORM_VALIDATION_TYPE_MISMATCH_EMAIL;
 370     case WebLocalizedString::ValidationTypeMismatchForEmailEmpty:
 371       return IDS_FORM_VALIDATION_TYPE_MISMATCH_EMAIL_EMPTY;
 372     case WebLocalizedString::ValidationTypeMismatchForEmailEmptyDomain:
 373       return IDS_FORM_VALIDATION_TYPE_MISMATCH_EMAIL_EMPTY_DOMAIN;
 374     case WebLocalizedString::ValidationTypeMismatchForEmailEmptyLocal:
 375       return IDS_FORM_VALIDATION_TYPE_MISMATCH_EMAIL_EMPTY_LOCAL;
 376     case WebLocalizedString::ValidationTypeMismatchForEmailInvalidDomain:
 377       return IDS_FORM_VALIDATION_TYPE_MISMATCH_EMAIL_INVALID_DOMAIN;
 378     case WebLocalizedString::ValidationTypeMismatchForEmailInvalidDots:
 379       return IDS_FORM_VALIDATION_TYPE_MISMATCH_EMAIL_INVALID_DOTS;
 380     case WebLocalizedString::ValidationTypeMismatchForEmailInvalidLocal:
 381       return IDS_FORM_VALIDATION_TYPE_MISMATCH_EMAIL_INVALID_LOCAL;
 382     case WebLocalizedString::ValidationTypeMismatchForEmailNoAtSign:
 383       return IDS_FORM_VALIDATION_TYPE_MISMATCH_EMAIL_NO_AT_SIGN;
 384     case WebLocalizedString::ValidationTypeMismatchForMultipleEmail:
 385       return IDS_FORM_VALIDATION_TYPE_MISMATCH_MULTIPLE_EMAIL;
 386     case WebLocalizedString::ValidationTypeMismatchForURL:
 387       return IDS_FORM_VALIDATION_TYPE_MISMATCH_URL;
 388     case WebLocalizedString::ValidationValueMissing:
 389       return IDS_FORM_VALIDATION_VALUE_MISSING;
 390     case WebLocalizedString::ValidationValueMissingForCheckbox:
 391       return IDS_FORM_VALIDATION_VALUE_MISSING_CHECKBOX;
 392     case WebLocalizedString::ValidationValueMissingForFile:
 393       return IDS_FORM_VALIDATION_VALUE_MISSING_FILE;
 394     case WebLocalizedString::ValidationValueMissingForMultipleFile:
 395       return IDS_FORM_VALIDATION_VALUE_MISSING_MULTIPLE_FILE;
 396     case WebLocalizedString::ValidationValueMissingForRadio:
 397       return IDS_FORM_VALIDATION_VALUE_MISSING_RADIO;
 398     case WebLocalizedString::ValidationValueMissingForSelect:
 399       return IDS_FORM_VALIDATION_VALUE_MISSING_SELECT;
 400     case WebLocalizedString::WeekFormatTemplate:
 401       return IDS_FORM_INPUT_WEEK_TEMPLATE;
 402     case WebLocalizedString::WeekNumberLabel:
 403       return IDS_FORM_WEEK_NUMBER_LABEL;
 404     // This "default:" line exists to avoid compile warnings about enum
 405     // coverage when we add a new symbol to WebLocalizedString.h in WebKit.
 406     // After a planned WebKit patch is landed, we need to add a case statement
 407     // for the added symbol here.
 408     default:
 409       break;
 410   }
 411   return -1;
 412 }
 413
 414 BlinkPlatformImpl::BlinkPlatformImpl()
 415     : main_thread_task_runner_(base::MessageLoopProxy::current()),
 416       shared_timer_func_(NULL),
 417       shared_timer_fire_time_(0.0),
 418       shared_timer_fire_time_was_set_while_suspended_(false),
 419       shared_timer_suspended_(0) {
 420   InternalInit();
 421 }
 422
 423 BlinkPlatformImpl::BlinkPlatformImpl(
 424     scoped_refptr<base::SingleThreadTaskRunner> main_thread_task_runner)
 425     : main_thread_task_runner_(main_thread_task_runner),
 426       shared_timer_func_(NULL),
 427       shared_timer_fire_time_(0.0),
 428       shared_timer_fire_time_was_set_while_suspended_(false),
 429       shared_timer_suspended_(0) {
 430   // TODO(alexclarke): Use c++11 delegated constructors when allowed.
 431   InternalInit();
 432 }
 433
 434 void BlinkPlatformImpl::InternalInit() {
 435   // ChildThread may not exist in some tests.
 436   if (ChildThreadImpl::current()) {
 437     geofencing_provider_.reset(new WebGeofencingProviderImpl(
 438         ChildThreadImpl::current()->thread_safe_sender()));
 439     bluetooth_.reset(
 440         new WebBluetoothImpl(ChildThreadImpl::current()->thread_safe_sender()));
 441     thread_safe_sender_ = ChildThreadImpl::current()->thread_safe_sender();
 442     notification_dispatcher_ =
 443         ChildThreadImpl::current()->notification_dispatcher();
 444     push_dispatcher_ = ChildThreadImpl::current()->push_dispatcher();
 445   }
 446
 447   if (main_thread_task_runner_.get()) {
 448     shared_timer_.SetTaskRunner(main_thread_task_runner_);
 449   }
 450 }
 451
 452 void BlinkPlatformImpl::UpdateWebThreadTLS(blink::WebThread* thread) {
 453   DCHECK(!current_thread_slot_.Get());
 454   current_thread_slot_.Set(thread);
 455 }
 456
 457 BlinkPlatformImpl::~BlinkPlatformImpl() {
 458 }
 459
 460 WebURLLoader* BlinkPlatformImpl::createURLLoader() {
 461   ChildThreadImpl* child_thread = ChildThreadImpl::current();
 462   // There may be no child thread in RenderViewTests.  These tests can still use
 463   // data URLs to bypass the ResourceDispatcher.
 464   return new WebURLLoaderImpl(
 465       child_thread ? child_thread->resource_dispatcher() : NULL,
 466       MainTaskRunnerForCurrentThread());
 467 }
 468
 469 blink::WebSocketHandle* BlinkPlatformImpl::createWebSocketHandle() {
 470   return new WebSocketBridge;
 471 }
 472
 473 WebString BlinkPlatformImpl::userAgent() {
 474   return WebString::fromUTF8(GetContentClient()->GetUserAgent());
 475 }
 476
 477 WebData BlinkPlatformImpl::parseDataURL(const WebURL& url,
 478                                         WebString& mimetype_out,
 479                                         WebString& charset_out) {
 480   std::string mime_type, char_set, data;
 481   if (net::DataURL::Parse(url, &mime_type, &char_set, &data)
 482       && net::IsSupportedMimeType(mime_type)) {
 483     mimetype_out = WebString::fromUTF8(mime_type);
 484     charset_out = WebString::fromUTF8(char_set);
 485     return data;
 486   }
 487   return WebData();
 488 }
 489
 490 WebURLError BlinkPlatformImpl::cancelledError(
 491     const WebURL& unreachableURL) const {
 492   return WebURLLoaderImpl::CreateError(unreachableURL, false, net::ERR_ABORTED);
 493 }
 494
 495 bool BlinkPlatformImpl::isReservedIPAddress(
 496     const blink::WebString& host) const {
 497   net::IPAddressNumber address;
 498   if (!net::ParseURLHostnameToNumber(host.utf8(), &address))
 499     return false;
 500   return net::IsIPAddressReserved(address);
 501 }
 502
 503 blink::WebThread* BlinkPlatformImpl::createThread(const char* name) {
 504   WebThreadImpl* thread = new WebThreadImpl(name);
 505   thread->TaskRunner()->PostTask(
 506       FROM_HERE, base::Bind(&BlinkPlatformImpl::UpdateWebThreadTLS,
 507                             base::Unretained(this), thread));
 508   return thread;
 509 }
 510
 511 blink::WebThread* BlinkPlatformImpl::currentThread() {
 512   return static_cast<blink::WebThread*>(current_thread_slot_.Get());
 513 }
 514
 515 void BlinkPlatformImpl::yieldCurrentThread() {
 516   base::PlatformThread::YieldCurrentThread();
 517 }
 518
 519 blink::WebWaitableEvent* BlinkPlatformImpl::createWaitableEvent() {
 520   return new WebWaitableEventImpl();
 521 }
 522
 523 blink::WebWaitableEvent* BlinkPlatformImpl::waitMultipleEvents(
 524     const blink::WebVector<blink::WebWaitableEvent*>& web_events) {
 525   std::vector<base::WaitableEvent*> events;
 526   for (size_t i = 0; i < web_events.size(); ++i)
 527     events.push_back(static_cast<WebWaitableEventImpl*>(web_events[i])->impl());
 528   size_t idx = base::WaitableEvent::WaitMany(
 529       vector_as_array(&events), events.size());
 530   DCHECK_LT(idx, web_events.size());
 531   return web_events[idx];
 532 }
 533
 534 void BlinkPlatformImpl::decrementStatsCounter(const char* name) {
 535 }
 536
 537 void BlinkPlatformImpl::incrementStatsCounter(const char* name) {
 538 }
 539
 540 void BlinkPlatformImpl::histogramCustomCounts(
 541     const char* name, int sample, int min, int max, int bucket_count) {
 542   // Copied from histogram macro, but without the static variable caching
 543   // the histogram because name is dynamic.
 544   base::HistogramBase* counter =
 545       base::Histogram::FactoryGet(name, min, max, bucket_count,
 546           base::HistogramBase::kUmaTargetedHistogramFlag);
 547   DCHECK_EQ(name, counter->histogram_name());
 548   counter->Add(sample);
 549 }
 550
 551 void BlinkPlatformImpl::histogramEnumeration(
 552     const char* name, int sample, int boundary_value) {
 553   // Copied from histogram macro, but without the static variable caching
 554   // the histogram because name is dynamic.
 555   base::HistogramBase* counter =
 556       base::LinearHistogram::FactoryGet(name, 1, boundary_value,
 557           boundary_value + 1, base::HistogramBase::kUmaTargetedHistogramFlag);
 558   DCHECK_EQ(name, counter->histogram_name());
 559   counter->Add(sample);
 560 }
 561
 562 void BlinkPlatformImpl::histogramSparse(const char* name, int sample) {
 563   // For sparse histograms, we can use the macro, as it does not incorporate a
 564   // static.
 565   UMA_HISTOGRAM_SPARSE_SLOWLY(name, sample);
 566 }
 567
 568 const unsigned char* BlinkPlatformImpl::getTraceCategoryEnabledFlag(
 569     const char* category_group) {
 570   return TRACE_EVENT_API_GET_CATEGORY_GROUP_ENABLED(category_group);
 571 }
 572
 573 long* BlinkPlatformImpl::getTraceSamplingState(
 574     const unsigned thread_bucket) {
 575   switch (thread_bucket) {
 576     case 0:
 577       return reinterpret_cast<long*>(&TRACE_EVENT_API_THREAD_BUCKET(0));
 578     case 1:
 579       return reinterpret_cast<long*>(&TRACE_EVENT_API_THREAD_BUCKET(1));
 580     case 2:
 581       return reinterpret_cast<long*>(&TRACE_EVENT_API_THREAD_BUCKET(2));
 582     default:
 583       NOTREACHED() << "Unknown thread bucket type.";
 584   }
 585   return NULL;
 586 }
 587
 588 static_assert(
 589     sizeof(blink::Platform::TraceEventHandle) ==
 590         sizeof(base::trace_event::TraceEventHandle),
 591     "TraceEventHandle types must be same size");
 592
 593 blink::Platform::TraceEventHandle BlinkPlatformImpl::addTraceEvent(
 594     char phase,
 595     const unsigned char* category_group_enabled,
 596     const char* name,
 597     unsigned long long id,
 598     double timestamp,
 599     int num_args,
 600     const char** arg_names,
 601     const unsigned char* arg_types,
 602     const unsigned long long* arg_values,
 603     unsigned char flags) {
 604   base::TimeTicks timestamp_tt = base::TimeTicks::FromInternalValue(
 605       static_cast<int64>(timestamp * base::Time::kMicrosecondsPerSecond));
 606   base::trace_event::TraceEventHandle handle =
 607       TRACE_EVENT_API_ADD_TRACE_EVENT_WITH_THREAD_ID_AND_TIMESTAMP(
 608           phase, category_group_enabled, name, id,
 609           base::PlatformThread::CurrentId(),
 610           timestamp_tt,
 611           num_args, arg_names, arg_types, arg_values, NULL, flags);
 612   blink::Platform::TraceEventHandle result;
 613   memcpy(&result, &handle, sizeof(result));
 614   return result;
 615 }
 616
 617 blink::Platform::TraceEventHandle BlinkPlatformImpl::addTraceEvent(
 618     char phase,
 619     const unsigned char* category_group_enabled,
 620     const char* name,
 621     unsigned long long id,
 622     double timestamp,
 623     int num_args,
 624     const char** arg_names,
 625     const unsigned char* arg_types,
 626     const unsigned long long* arg_values,
 627     const blink::WebConvertableToTraceFormat* convertable_values,
 628     unsigned char flags) {
 629   scoped_refptr<base::trace_event::ConvertableToTraceFormat>
 630       convertable_wrappers[2];
 631   if (convertable_values) {
 632     size_t size = std::min(static_cast<size_t>(num_args),
 633                            arraysize(convertable_wrappers));
 634     for (size_t i = 0; i < size; ++i) {
 635       if (arg_types[i] == TRACE_VALUE_TYPE_CONVERTABLE) {
 636         convertable_wrappers[i] =
 637             new ConvertableToTraceFormatWrapper(convertable_values[i]);
 638       }
 639     }
 640   }
 641   base::TimeTicks timestamp_tt = base::TimeTicks::FromInternalValue(
 642       static_cast<int64>(timestamp * base::Time::kMicrosecondsPerSecond));
 643   base::trace_event::TraceEventHandle handle =
 644       TRACE_EVENT_API_ADD_TRACE_EVENT_WITH_THREAD_ID_AND_TIMESTAMP(phase,
 645                                       category_group_enabled,
 646                                       name,
 647                                       id,
 648                                       base::PlatformThread::CurrentId(),
 649                                       timestamp_tt,
 650                                       num_args,
 651                                       arg_names,
 652                                       arg_types,
 653                                       arg_values,
 654                                       convertable_wrappers,
 655                                       flags);
 656   blink::Platform::TraceEventHandle result;
 657   memcpy(&result, &handle, sizeof(result));
 658   return result;
 659 }
 660
 661 void BlinkPlatformImpl::updateTraceEventDuration(
 662     const unsigned char* category_group_enabled,
 663     const char* name,
 664     TraceEventHandle handle) {
 665   base::trace_event::TraceEventHandle traceEventHandle;
 666   memcpy(&traceEventHandle, &handle, sizeof(handle));
 667   TRACE_EVENT_API_UPDATE_TRACE_EVENT_DURATION(
 668       category_group_enabled, name, traceEventHandle);
 669 }
 670
 671 namespace {
 672
 673 WebData loadAudioSpatializationResource(const char* name) {
 674 #ifdef IDR_AUDIO_SPATIALIZATION_COMPOSITE
 675   if (!strcmp(name, "Composite")) {
 676     base::StringPiece resource = GetContentClient()->GetDataResource(
 677         IDR_AUDIO_SPATIALIZATION_COMPOSITE, ui::SCALE_FACTOR_NONE);
 678     return WebData(resource.data(), resource.size());
 679   }
 680 #endif
 681
 682 #ifdef IDR_AUDIO_SPATIALIZATION_T000_P000
 683   const size_t kExpectedSpatializationNameLength = 31;
 684   if (strlen(name) != kExpectedSpatializationNameLength) {
 685     return WebData();
 686   }
 687
 688   // Extract the azimuth and elevation from the resource name.
 689   int azimuth = 0;
 690   int elevation = 0;
 691   int values_parsed =
 692       sscanf(name, "IRC_Composite_C_R0195_T%3d_P%3d", &azimuth, &elevation);
 693   if (values_parsed != 2) {
 694     return WebData();
 695   }
 696
 697   // The resource index values go through the elevations first, then azimuths.
 698   const int kAngleSpacing = 15;
 699
 700   // 0 <= elevation <= 90 (or 315 <= elevation <= 345)
 701   // in increments of 15 degrees.
 702   int elevation_index =
 703       elevation <= 90 ? elevation / kAngleSpacing :
 704       7 + (elevation - 315) / kAngleSpacing;
 705   bool is_elevation_index_good = 0 <= elevation_index && elevation_index < 10;
 706
 707   // 0 <= azimuth < 360 in increments of 15 degrees.
 708   int azimuth_index = azimuth / kAngleSpacing;
 709   bool is_azimuth_index_good = 0 <= azimuth_index && azimuth_index < 24;
 710
 711   const int kNumberOfElevations = 10;
 712   const int kNumberOfAudioResources = 240;
 713   int resource_index = kNumberOfElevations * azimuth_index + elevation_index;
 714   bool is_resource_index_good = 0 <= resource_index &&
 715       resource_index < kNumberOfAudioResources;
 716
 717   if (is_azimuth_index_good && is_elevation_index_good &&
 718       is_resource_index_good) {
 719     const int kFirstAudioResourceIndex = IDR_AUDIO_SPATIALIZATION_T000_P000;
 720     base::StringPiece resource = GetContentClient()->GetDataResource(
 721         kFirstAudioResourceIndex + resource_index, ui::SCALE_FACTOR_NONE);
 722     return WebData(resource.data(), resource.size());
 723   }
 724 #endif  // IDR_AUDIO_SPATIALIZATION_T000_P000
 725
 726   NOTREACHED();
 727   return WebData();
 728 }
 729
 730 struct DataResource {
 731   const char* name;
 732   int id;
 733   ui::ScaleFactor scale_factor;
 734 };
 735
 736 const DataResource kDataResources[] = {
 737   { "missingImage", IDR_BROKENIMAGE, ui::SCALE_FACTOR_100P },
 738   { "missingImage@2x", IDR_BROKENIMAGE, ui::SCALE_FACTOR_200P },
 739   { "mediaplayerPause", IDR_MEDIAPLAYER_PAUSE_BUTTON, ui::SCALE_FACTOR_100P },
 740   { "mediaplayerPauseHover",
 741     IDR_MEDIAPLAYER_PAUSE_BUTTON_HOVER, ui::SCALE_FACTOR_100P },
 742   { "mediaplayerPauseDown",
 743     IDR_MEDIAPLAYER_PAUSE_BUTTON_DOWN, ui::SCALE_FACTOR_100P },
 744   { "mediaplayerPlay", IDR_MEDIAPLAYER_PLAY_BUTTON, ui::SCALE_FACTOR_100P },
 745   { "mediaplayerPlayHover",
 746     IDR_MEDIAPLAYER_PLAY_BUTTON_HOVER, ui::SCALE_FACTOR_100P },
 747   { "mediaplayerPlayDown",
 748     IDR_MEDIAPLAYER_PLAY_BUTTON_DOWN, ui::SCALE_FACTOR_100P },
 749   { "mediaplayerPlayDisabled",
 750     IDR_MEDIAPLAYER_PLAY_BUTTON_DISABLED, ui::SCALE_FACTOR_100P },
 751   { "mediaplayerSoundLevel3",
 752     IDR_MEDIAPLAYER_SOUND_LEVEL3_BUTTON, ui::SCALE_FACTOR_100P },
 753   { "mediaplayerSoundLevel3Hover",
 754     IDR_MEDIAPLAYER_SOUND_LEVEL3_BUTTON_HOVER, ui::SCALE_FACTOR_100P },
 755   { "mediaplayerSoundLevel3Down",
 756     IDR_MEDIAPLAYER_SOUND_LEVEL3_BUTTON_DOWN, ui::SCALE_FACTOR_100P },
 757   { "mediaplayerSoundLevel2",
 758     IDR_MEDIAPLAYER_SOUND_LEVEL2_BUTTON, ui::SCALE_FACTOR_100P },
 759   { "mediaplayerSoundLevel2Hover",
 760     IDR_MEDIAPLAYER_SOUND_LEVEL2_BUTTON_HOVER, ui::SCALE_FACTOR_100P },
 761   { "mediaplayerSoundLevel2Down",
 762     IDR_MEDIAPLAYER_SOUND_LEVEL2_BUTTON_DOWN, ui::SCALE_FACTOR_100P },
 763   { "mediaplayerSoundLevel1",
 764     IDR_MEDIAPLAYER_SOUND_LEVEL1_BUTTON, ui::SCALE_FACTOR_100P },
 765   { "mediaplayerSoundLevel1Hover",
 766     IDR_MEDIAPLAYER_SOUND_LEVEL1_BUTTON_HOVER, ui::SCALE_FACTOR_100P },
 767   { "mediaplayerSoundLevel1Down",
 768     IDR_MEDIAPLAYER_SOUND_LEVEL1_BUTTON_DOWN, ui::SCALE_FACTOR_100P },
 769   { "mediaplayerSoundLevel0",
 770     IDR_MEDIAPLAYER_SOUND_LEVEL0_BUTTON, ui::SCALE_FACTOR_100P },
 771   { "mediaplayerSoundLevel0Hover",
 772     IDR_MEDIAPLAYER_SOUND_LEVEL0_BUTTON_HOVER, ui::SCALE_FACTOR_100P },
 773   { "mediaplayerSoundLevel0Down",
 774     IDR_MEDIAPLAYER_SOUND_LEVEL0_BUTTON_DOWN, ui::SCALE_FACTOR_100P },
 775   { "mediaplayerSoundDisabled",
 776     IDR_MEDIAPLAYER_SOUND_DISABLED, ui::SCALE_FACTOR_100P },
 777   { "mediaplayerSliderThumb",
 778     IDR_MEDIAPLAYER_SLIDER_THUMB, ui::SCALE_FACTOR_100P },
 779   { "mediaplayerSliderThumbHover",
 780     IDR_MEDIAPLAYER_SLIDER_THUMB_HOVER, ui::SCALE_FACTOR_100P },
 781   { "mediaplayerSliderThumbDown",
 782     IDR_MEDIAPLAYER_SLIDER_THUMB_DOWN, ui::SCALE_FACTOR_100P },
 783   { "mediaplayerVolumeSliderThumb",
 784     IDR_MEDIAPLAYER_VOLUME_SLIDER_THUMB, ui::SCALE_FACTOR_100P },
 785   { "mediaplayerVolumeSliderThumbHover",
 786     IDR_MEDIAPLAYER_VOLUME_SLIDER_THUMB_HOVER, ui::SCALE_FACTOR_100P },
 787   { "mediaplayerVolumeSliderThumbDown",
 788     IDR_MEDIAPLAYER_VOLUME_SLIDER_THUMB_DOWN, ui::SCALE_FACTOR_100P },
 789   { "mediaplayerVolumeSliderThumbDisabled",
 790     IDR_MEDIAPLAYER_VOLUME_SLIDER_THUMB_DISABLED, ui::SCALE_FACTOR_100P },
 791   { "mediaplayerClosedCaption",
 792     IDR_MEDIAPLAYER_CLOSEDCAPTION_BUTTON, ui::SCALE_FACTOR_100P },
 793   { "mediaplayerClosedCaptionHover",
 794     IDR_MEDIAPLAYER_CLOSEDCAPTION_BUTTON_HOVER, ui::SCALE_FACTOR_100P },
 795   { "mediaplayerClosedCaptionDown",
 796     IDR_MEDIAPLAYER_CLOSEDCAPTION_BUTTON_DOWN, ui::SCALE_FACTOR_100P },
 797   { "mediaplayerClosedCaptionDisabled",
 798     IDR_MEDIAPLAYER_CLOSEDCAPTION_BUTTON_DISABLED, ui::SCALE_FACTOR_100P },
 799   { "mediaplayerFullscreen",
 800     IDR_MEDIAPLAYER_FULLSCREEN_BUTTON, ui::SCALE_FACTOR_100P },
 801   { "mediaplayerFullscreenHover",
 802     IDR_MEDIAPLAYER_FULLSCREEN_BUTTON_HOVER, ui::SCALE_FACTOR_100P },
 803   { "mediaplayerFullscreenDown",
 804     IDR_MEDIAPLAYER_FULLSCREEN_BUTTON_DOWN, ui::SCALE_FACTOR_100P },
 805   { "mediaplayerCastOff",
 806     IDR_MEDIAPLAYER_CAST_BUTTON_OFF, ui::SCALE_FACTOR_100P },
 807   { "mediaplayerCastOn",
 808     IDR_MEDIAPLAYER_CAST_BUTTON_ON, ui::SCALE_FACTOR_100P },
 809   { "mediaplayerFullscreenDisabled",
 810     IDR_MEDIAPLAYER_FULLSCREEN_BUTTON_DISABLED, ui::SCALE_FACTOR_100P },
 811   { "mediaplayerOverlayCastOff",
 812     IDR_MEDIAPLAYER_OVERLAY_CAST_BUTTON_OFF, ui::SCALE_FACTOR_100P },
 813   { "mediaplayerOverlayPlay",
 814     IDR_MEDIAPLAYER_OVERLAY_PLAY_BUTTON, ui::SCALE_FACTOR_100P },
 815   { "panIcon", IDR_PAN_SCROLL_ICON, ui::SCALE_FACTOR_100P },
 816   { "searchCancel", IDR_SEARCH_CANCEL, ui::SCALE_FACTOR_100P },
 817   { "searchCancelPressed", IDR_SEARCH_CANCEL_PRESSED, ui::SCALE_FACTOR_100P },
 818   { "searchMagnifier", IDR_SEARCH_MAGNIFIER, ui::SCALE_FACTOR_100P },
 819   { "searchMagnifierResults",
 820     IDR_SEARCH_MAGNIFIER_RESULTS, ui::SCALE_FACTOR_100P },
 821   { "textAreaResizeCorner", IDR_TEXTAREA_RESIZER, ui::SCALE_FACTOR_100P },
 822   { "textAreaResizeCorner@2x", IDR_TEXTAREA_RESIZER, ui::SCALE_FACTOR_200P },
 823   { "generatePassword", IDR_PASSWORD_GENERATION_ICON, ui::SCALE_FACTOR_100P },
 824   { "generatePasswordHover",
 825     IDR_PASSWORD_GENERATION_ICON_HOVER, ui::SCALE_FACTOR_100P },
 826   { "html.css", IDR_UASTYLE_HTML_CSS, ui::SCALE_FACTOR_NONE },
 827   { "quirks.css", IDR_UASTYLE_QUIRKS_CSS, ui::SCALE_FACTOR_NONE },
 828   { "view-source.css", IDR_UASTYLE_VIEW_SOURCE_CSS, ui::SCALE_FACTOR_NONE },
 829   { "themeChromium.css", IDR_UASTYLE_THEME_CHROMIUM_CSS,
 830     ui::SCALE_FACTOR_NONE },
 831 #if defined(OS_ANDROID)
 832   { "themeChromiumAndroid.css", IDR_UASTYLE_THEME_CHROMIUM_ANDROID_CSS,
 833     ui::SCALE_FACTOR_NONE },
 834   { "mediaControlsAndroid.css", IDR_UASTYLE_MEDIA_CONTROLS_ANDROID_CSS,
 835     ui::SCALE_FACTOR_NONE },
 836 #endif
 837 #if !defined(OS_WIN)
 838   { "themeChromiumLinux.css", IDR_UASTYLE_THEME_CHROMIUM_LINUX_CSS,
 839     ui::SCALE_FACTOR_NONE },
 840 #endif
 841   { "themeChromiumSkia.css", IDR_UASTYLE_THEME_CHROMIUM_SKIA_CSS,
 842     ui::SCALE_FACTOR_NONE },
 843   { "themeInputMultipleFields.css",
 844     IDR_UASTYLE_THEME_INPUT_MULTIPLE_FIELDS_CSS, ui::SCALE_FACTOR_NONE },
 845 #if defined(OS_MACOSX)
 846   { "themeMac.css", IDR_UASTYLE_THEME_MAC_CSS, ui::SCALE_FACTOR_NONE },
 847 #endif
 848   { "themeWin.css", IDR_UASTYLE_THEME_WIN_CSS, ui::SCALE_FACTOR_NONE },
 849   { "themeWinQuirks.css", IDR_UASTYLE_THEME_WIN_QUIRKS_CSS,
 850     ui::SCALE_FACTOR_NONE },
 851   { "svg.css", IDR_UASTYLE_SVG_CSS, ui::SCALE_FACTOR_NONE},
 852   { "navigationTransitions.css", IDR_UASTYLE_NAVIGATION_TRANSITIONS_CSS,
 853     ui::SCALE_FACTOR_NONE },
 854   { "mathml.css", IDR_UASTYLE_MATHML_CSS, ui::SCALE_FACTOR_NONE},
 855   { "mediaControls.css", IDR_UASTYLE_MEDIA_CONTROLS_CSS,
 856     ui::SCALE_FACTOR_NONE },
 857   { "fullscreen.css", IDR_UASTYLE_FULLSCREEN_CSS, ui::SCALE_FACTOR_NONE},
 858   { "xhtmlmp.css", IDR_UASTYLE_XHTMLMP_CSS, ui::SCALE_FACTOR_NONE},
 859   { "viewportAndroid.css", IDR_UASTYLE_VIEWPORT_ANDROID_CSS,
 860     ui::SCALE_FACTOR_NONE},
 861   { "InspectorOverlayPage.html", IDR_INSPECTOR_OVERLAY_PAGE_HTML,
 862     ui::SCALE_FACTOR_NONE },
 863   { "InjectedScriptCanvasModuleSource.js",
 864     IDR_INSPECTOR_INJECTED_SCRIPT_CANVAS_MODULE_SOURCE_JS,
 865     ui::SCALE_FACTOR_NONE },
 866   { "InjectedScriptSource.js", IDR_INSPECTOR_INJECTED_SCRIPT_SOURCE_JS,
 867     ui::SCALE_FACTOR_NONE },
 868   { "DebuggerScriptSource.js", IDR_INSPECTOR_DEBUGGER_SCRIPT_SOURCE_JS,
 869     ui::SCALE_FACTOR_NONE },
 870   { "DocumentExecCommand.js", IDR_PRIVATE_SCRIPT_DOCUMENTEXECCOMMAND_JS,
 871     ui::SCALE_FACTOR_NONE },
 872   { "DocumentXMLTreeViewer.css", IDR_PRIVATE_SCRIPT_DOCUMENTXMLTREEVIEWER_CSS,
 873     ui::SCALE_FACTOR_NONE },
 874   { "DocumentXMLTreeViewer.js", IDR_PRIVATE_SCRIPT_DOCUMENTXMLTREEVIEWER_JS,
 875     ui::SCALE_FACTOR_NONE },
 876   { "HTMLMarqueeElement.js", IDR_PRIVATE_SCRIPT_HTMLMARQUEEELEMENT_JS,
 877     ui::SCALE_FACTOR_NONE },
 878   { "PluginPlaceholderElement.js",
 879     IDR_PRIVATE_SCRIPT_PLUGINPLACEHOLDERELEMENT_JS, ui::SCALE_FACTOR_NONE },
 880   { "PrivateScriptRunner.js", IDR_PRIVATE_SCRIPT_PRIVATESCRIPTRUNNER_JS,
 881     ui::SCALE_FACTOR_NONE },
 882 #ifdef IDR_PICKER_COMMON_JS
 883   { "pickerCommon.js", IDR_PICKER_COMMON_JS, ui::SCALE_FACTOR_NONE },
 884   { "pickerCommon.css", IDR_PICKER_COMMON_CSS, ui::SCALE_FACTOR_NONE },
 885   { "calendarPicker.js", IDR_CALENDAR_PICKER_JS, ui::SCALE_FACTOR_NONE },
 886   { "calendarPicker.css", IDR_CALENDAR_PICKER_CSS, ui::SCALE_FACTOR_NONE },
 887   { "listPicker.js", IDR_LIST_PICKER_JS, ui::SCALE_FACTOR_NONE },
 888   { "listPicker.css", IDR_LIST_PICKER_CSS, ui::SCALE_FACTOR_NONE },
 889   { "pickerButton.css", IDR_PICKER_BUTTON_CSS, ui::SCALE_FACTOR_NONE },
 890   { "suggestionPicker.js", IDR_SUGGESTION_PICKER_JS, ui::SCALE_FACTOR_NONE },
 891   { "suggestionPicker.css", IDR_SUGGESTION_PICKER_CSS, ui::SCALE_FACTOR_NONE },
 892   { "colorSuggestionPicker.js",
 893     IDR_COLOR_SUGGESTION_PICKER_JS, ui::SCALE_FACTOR_NONE },
 894   { "colorSuggestionPicker.css",
 895     IDR_COLOR_SUGGESTION_PICKER_CSS, ui::SCALE_FACTOR_NONE },
 896 #endif
 897 };
 898
 899 }  // namespace
 900
 901 WebData BlinkPlatformImpl::loadResource(const char* name) {
 902   // Some clients will call into this method with an empty |name| when they have
 903   // optional resources.  For example, the PopupMenuChromium code can have icons
 904   // for some Autofill items but not for others.
 905   if (!strlen(name))
 906     return WebData();
 907
 908   // Check the name prefix to see if it's an audio resource.
 909   if (StartsWithASCII(name, "IRC_Composite", true) ||
 910       StartsWithASCII(name, "Composite", true))
 911     return loadAudioSpatializationResource(name);
 912
 913   // TODO(flackr): We should use a better than linear search here, a trie would
 914   // be ideal.
 915   for (size_t i = 0; i < arraysize(kDataResources); ++i) {
 916     if (!strcmp(name, kDataResources[i].name)) {
 917       base::StringPiece resource = GetContentClient()->GetDataResource(
 918           kDataResources[i].id, kDataResources[i].scale_factor);
 919       return WebData(resource.data(), resource.size());
 920     }
 921   }
 922
 923   NOTREACHED() << "Unknown image resource " << name;
 924   return WebData();
 925 }
 926
 927 WebString BlinkPlatformImpl::queryLocalizedString(
 928     WebLocalizedString::Name name) {
 929   int message_id = ToMessageID(name);
 930   if (message_id < 0)
 931     return WebString();
 932   return GetContentClient()->GetLocalizedString(message_id);
 933 }
 934
 935 WebString BlinkPlatformImpl::queryLocalizedString(
 936     WebLocalizedString::Name name, int numeric_value) {
 937   return queryLocalizedString(name, base::IntToString16(numeric_value));
 938 }
 939
 940 WebString BlinkPlatformImpl::queryLocalizedString(
 941     WebLocalizedString::Name name, const WebString& value) {
 942   int message_id = ToMessageID(name);
 943   if (message_id < 0)
 944     return WebString();
 945   return ReplaceStringPlaceholders(GetContentClient()->GetLocalizedString(
 946       message_id), value, NULL);
 947 }
 948
 949 WebString BlinkPlatformImpl::queryLocalizedString(
 950     WebLocalizedString::Name name,
 951     const WebString& value1,
 952     const WebString& value2) {
 953   int message_id = ToMessageID(name);
 954   if (message_id < 0)
 955     return WebString();
 956   std::vector<base::string16> values;
 957   values.reserve(2);
 958   values.push_back(value1);
 959   values.push_back(value2);
 960   return ReplaceStringPlaceholders(
 961       GetContentClient()->GetLocalizedString(message_id), values, NULL);
 962 }
 963
 964 double BlinkPlatformImpl::currentTime() {
 965   return base::Time::Now().ToDoubleT();
 966 }
 967
 968 double BlinkPlatformImpl::monotonicallyIncreasingTime() {
 969   return base::TimeTicks::Now().ToInternalValue() /
 970       static_cast<double>(base::Time::kMicrosecondsPerSecond);
 971 }
 972
 973 void BlinkPlatformImpl::cryptographicallyRandomValues(
 974     unsigned char* buffer, size_t length) {
 975   base::RandBytes(buffer, length);
 976 }
 977
 978 void BlinkPlatformImpl::setSharedTimerFiredFunction(void (*func)()) {
 979   shared_timer_func_ = func;
 980 }
 981
 982 void BlinkPlatformImpl::setSharedTimerFireInterval(
 983     double interval_seconds) {
 984   shared_timer_fire_time_ = interval_seconds + monotonicallyIncreasingTime();
 985   if (shared_timer_suspended_) {
 986     shared_timer_fire_time_was_set_while_suspended_ = true;
 987     return;
 988   }
 989
 990   // By converting between double and int64 representation, we run the risk
 991   // of losing precision due to rounding errors. Performing computations in
 992   // microseconds reduces this risk somewhat. But there still is the potential
 993   // of us computing a fire time for the timer that is shorter than what we
 994   // need.
 995   // As the event loop will check event deadlines prior to actually firing
 996   // them, there is a risk of needlessly rescheduling events and of
 997   // needlessly looping if sleep times are too short even by small amounts.
 998   // This results in measurable performance degradation unless we use ceil() to
 999   // always round up the sleep times.
1000   int64 interval = static_cast<int64>(
1001       ceil(interval_seconds * base::Time::kMillisecondsPerSecond)
1002       * base::Time::kMicrosecondsPerMillisecond);
1003
1004   if (interval < 0)
1005     interval = 0;
1006
1007   shared_timer_.Stop();
1008   shared_timer_.Start(FROM_HERE, base::TimeDelta::FromMicroseconds(interval),
1009                       this, &BlinkPlatformImpl::DoTimeout);
1010   OnStartSharedTimer(base::TimeDelta::FromMicroseconds(interval));
1011 }
1012
1013 void BlinkPlatformImpl::stopSharedTimer() {
1014   shared_timer_.Stop();
1015 }
1016
1017 void BlinkPlatformImpl::callOnMainThread(
1018     void (*func)(void*), void* context) {
1019   main_thread_task_runner_->PostTask(FROM_HERE, base::Bind(func, context));
1020 }
1021
1022 blink::WebGestureCurve* BlinkPlatformImpl::createFlingAnimationCurve(
1023     blink::WebGestureDevice device_source,
1024     const blink::WebFloatPoint& velocity,
1025     const blink::WebSize& cumulative_scroll) {
1026   bool is_main_thread =
1027       main_thread_task_runner_.get() &&
1028       main_thread_task_runner_->BelongsToCurrentThread();
1029   return WebGestureCurveImpl::CreateFromDefaultPlatformCurve(
1030              gfx::Vector2dF(velocity.x, velocity.y),
1031              gfx::Vector2dF(cumulative_scroll.width, cumulative_scroll.height),
1032              is_main_thread).release();
1033 }
1034
1035 void BlinkPlatformImpl::didStartWorkerRunLoop() {
1036   WorkerTaskRunner* worker_task_runner = WorkerTaskRunner::Instance();
1037   worker_task_runner->OnWorkerRunLoopStarted();
1038 }
1039
1040 void BlinkPlatformImpl::didStopWorkerRunLoop() {
1041   WorkerTaskRunner* worker_task_runner = WorkerTaskRunner::Instance();
1042   worker_task_runner->OnWorkerRunLoopStopped();
1043 }
1044
1045 blink::WebCrypto* BlinkPlatformImpl::crypto() {
1046   return &web_crypto_;
1047 }
1048
1049 blink::WebGeofencingProvider* BlinkPlatformImpl::geofencingProvider() {
1050   return geofencing_provider_.get();
1051 }
1052
1053 blink::WebBluetooth* BlinkPlatformImpl::bluetooth() {
1054   return bluetooth_.get();
1055 }
1056
1057 blink::WebNotificationManager*
1058 BlinkPlatformImpl::notificationManager() {
1059   if (!thread_safe_sender_.get() || !notification_dispatcher_.get())
1060     return nullptr;
1061
1062   return NotificationManager::ThreadSpecificInstance(
1063       thread_safe_sender_.get(),
1064       main_thread_task_runner_.get(),
1065       notification_dispatcher_.get());
1066 }
1067
1068 blink::WebPushProvider* BlinkPlatformImpl::pushProvider() {
1069   if (!thread_safe_sender_.get() || !push_dispatcher_.get())
1070     return nullptr;
1071
1072   return PushProvider::ThreadSpecificInstance(thread_safe_sender_.get(),
1073                                               push_dispatcher_.get());
1074 }
1075
1076 blink::WebNavigatorConnectProvider*
1077 BlinkPlatformImpl::navigatorConnectProvider() {
1078   if (!thread_safe_sender_.get())
1079     return nullptr;
1080
1081   return NavigatorConnectProvider::ThreadSpecificInstance(
1082       thread_safe_sender_.get(), main_thread_task_runner_);
1083 }
1084
1085 WebThemeEngine* BlinkPlatformImpl::themeEngine() {
1086   return &native_theme_engine_;
1087 }
1088
1089 WebFallbackThemeEngine* BlinkPlatformImpl::fallbackThemeEngine() {
1090   return &fallback_theme_engine_;
1091 }
1092
1093 blink::Platform::FileHandle BlinkPlatformImpl::databaseOpenFile(
1094     const blink::WebString& vfs_file_name, int desired_flags) {
1095 #if defined(OS_WIN)
1096   return INVALID_HANDLE_VALUE;
1097 #elif defined(OS_POSIX)
1098   return -1;
1099 #endif
1100 }
1101
1102 int BlinkPlatformImpl::databaseDeleteFile(
1103     const blink::WebString& vfs_file_name, bool sync_dir) {
1104   return -1;
1105 }
1106
1107 long BlinkPlatformImpl::databaseGetFileAttributes(
1108     const blink::WebString& vfs_file_name) {
1109   return 0;
1110 }
1111
1112 long long BlinkPlatformImpl::databaseGetFileSize(
1113     const blink::WebString& vfs_file_name) {
1114   return 0;
1115 }
1116
1117 long long BlinkPlatformImpl::databaseGetSpaceAvailableForOrigin(
1118     const blink::WebString& origin_identifier) {
1119   return 0;
1120 }
1121
1122 blink::WebString BlinkPlatformImpl::signedPublicKeyAndChallengeString(
1123     unsigned key_size_index,
1124     const blink::WebString& challenge,
1125     const blink::WebURL& url) {
1126   return blink::WebString("");
1127 }
1128
1129 static scoped_ptr<base::ProcessMetrics> CurrentProcessMetrics() {
1130   using base::ProcessMetrics;
1131 #if defined(OS_MACOSX)
1132   return scoped_ptr<ProcessMetrics>(
1133       // The default port provider is sufficient to get data for the current
1134       // process.
1135       ProcessMetrics::CreateProcessMetrics(base::GetCurrentProcessHandle(),
1136                                            NULL));
1137 #else
1138   return scoped_ptr<ProcessMetrics>(
1139       ProcessMetrics::CreateProcessMetrics(base::GetCurrentProcessHandle()));
1140 #endif
1141 }
1142
1143 static size_t getMemoryUsageMB(bool bypass_cache) {
1144   size_t current_mem_usage = 0;
1145   MemoryUsageCache* mem_usage_cache_singleton = MemoryUsageCache::GetInstance();
1146   if (!bypass_cache &&
1147       mem_usage_cache_singleton->IsCachedValueValid(&current_mem_usage))
1148     return current_mem_usage;
1149
1150   current_mem_usage = GetMemoryUsageKB() >> 10;
1151   mem_usage_cache_singleton->SetMemoryValue(current_mem_usage);
1152   return current_mem_usage;
1153 }
1154
1155 size_t BlinkPlatformImpl::memoryUsageMB() {
1156   return getMemoryUsageMB(false);
1157 }
1158
1159 size_t BlinkPlatformImpl::actualMemoryUsageMB() {
1160   return getMemoryUsageMB(true);
1161 }
1162
1163 size_t BlinkPlatformImpl::physicalMemoryMB() {
1164   return static_cast<size_t>(base::SysInfo::AmountOfPhysicalMemoryMB());
1165 }
1166
1167 size_t BlinkPlatformImpl::virtualMemoryLimitMB() {
1168   return static_cast<size_t>(base::SysInfo::AmountOfVirtualMemoryMB());
1169 }
1170
1171 size_t BlinkPlatformImpl::numberOfProcessors() {
1172   return static_cast<size_t>(base::SysInfo::NumberOfProcessors());
1173 }
1174
1175 bool BlinkPlatformImpl::processMemorySizesInBytes(
1176     size_t* private_bytes,
1177     size_t* shared_bytes) {
1178   return CurrentProcessMetrics()->GetMemoryBytes(private_bytes, shared_bytes);
1179 }
1180
1181 bool BlinkPlatformImpl::memoryAllocatorWasteInBytes(size_t* size) {
1182   return base::allocator::GetAllocatorWasteSize(size);
1183 }
1184
1185 blink::WebDiscardableMemory*
1186 BlinkPlatformImpl::allocateAndLockDiscardableMemory(size_t bytes) {
1187   base::DiscardableMemoryType type =
1188       base::DiscardableMemory::GetPreferredType();
1189   if (type == base::DISCARDABLE_MEMORY_TYPE_EMULATED)
1190     return NULL;
1191   return content::WebDiscardableMemoryImpl::CreateLockedMemory(bytes).release();
1192 }
1193
1194 size_t BlinkPlatformImpl::maxDecodedImageBytes() {
1195 #if defined(OS_ANDROID)
1196   if (base::SysInfo::IsLowEndDevice()) {
1197     // Limit image decoded size to 3M pixels on low end devices.
1198     // 4 is maximum number of bytes per pixel.
1199     return 3 * 1024 * 1024 * 4;
1200   }
1201   // For other devices, limit decoded image size based on the amount of physical
1202   // memory.
1203   // In some cases all physical memory is not accessible by Chromium, as it can
1204   // be reserved for direct use by certain hardware. Thus, we set the limit so
1205   // that 1.6GB of reported physical memory on a 2GB device is enough to set the
1206   // limit at 16M pixels, which is a desirable value since 4K*4K is a relatively
1207   // common texture size.
1208   return base::SysInfo::AmountOfPhysicalMemory() / 25;
1209 #else
1210   return noDecodedImageByteLimit;
1211 #endif
1212 }
1213
1214 void BlinkPlatformImpl::SuspendSharedTimer() {
1215   ++shared_timer_suspended_;
1216 }
1217
1218 void BlinkPlatformImpl::ResumeSharedTimer() {
1219   DCHECK_GT(shared_timer_suspended_, 0);
1220
1221   // The shared timer may have fired or been adjusted while we were suspended.
1222   if (--shared_timer_suspended_ == 0 &&
1223       (!shared_timer_.IsRunning() ||
1224        shared_timer_fire_time_was_set_while_suspended_)) {
1225     shared_timer_fire_time_was_set_while_suspended_ = false;
1226     setSharedTimerFireInterval(
1227         shared_timer_fire_time_ - monotonicallyIncreasingTime());
1228   }
1229 }
1230
1231 scoped_refptr<base::SingleThreadTaskRunner>
1232 BlinkPlatformImpl::MainTaskRunnerForCurrentThread() {
1233   if (main_thread_task_runner_.get() &&
1234       main_thread_task_runner_->BelongsToCurrentThread()) {
1235     return main_thread_task_runner_;
1236   } else {
1237     return base::MessageLoopProxy::current();
1238   }
1239 }
1240
1241 WebString BlinkPlatformImpl::domCodeStringFromEnum(int dom_code) {
1242   return WebString::fromUTF8(ui::KeycodeConverter::DomCodeToCodeString(
1243       static_cast<ui::DomCode>(dom_code)));
1244 }
1245
1246 int BlinkPlatformImpl::domEnumFromCodeString(const WebString& code) {
1247   return static_cast<int>(ui::KeycodeConverter::CodeStringToDomCode(
1248       code.utf8().data()));
1249 }
1250
1251 }  // namespace content