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/message_loop/message_loop.h"
  17 #include "base/metrics/histogram.h"
  18 #include "base/metrics/sparse_histogram.h"
  19 #include "base/metrics/stats_counters.h"
  20 #include "base/platform_file.h"
  21 #include "base/process/process_metrics.h"
  22 #include "base/rand_util.h"
  23 #include "base/strings/string_number_conversions.h"
  24 #include "base/strings/string_util.h"
  25 #include "base/strings/utf_string_conversions.h"
  26 #include "base/synchronization/lock.h"
  27 #include "base/sys_info.h"
  28 #include "base/time/time.h"
  29 #include "content/child/content_child_helpers.h"
  30 #include "content/child/web_socket_stream_handle_impl.h"
  31 #include "content/child/web_url_loader_impl.h"
  32 #include "content/public/common/content_client.h"
  33 #include "grit/blink_resources.h"
  34 #include "grit/webkit_resources.h"
  35 #include "grit/webkit_strings.h"
  36 #include "net/base/data_url.h"
  37 #include "net/base/mime_util.h"
  38 #include "net/base/net_errors.h"
  39 #include "third_party/WebKit/public/platform/WebData.h"
  40 #include "third_party/WebKit/public/platform/WebString.h"
  41 #include "ui/base/layout.h"
  42
  43 #if defined(OS_ANDROID)
  44 #include "base/android/sys_utils.h"
  45 #endif
  46
  47 #if !defined(NO_TCMALLOC) && defined(USE_TCMALLOC) && !defined(OS_WIN)
  48 #include "third_party/tcmalloc/chromium/src/gperftools/heap-profiler.h"
  49 #endif
  50
  51 using blink::WebData;
  52 using blink::WebLocalizedString;
  53 using blink::WebString;
  54 using blink::WebSocketStreamHandle;
  55 using blink::WebURL;
  56 using blink::WebURLError;
  57 using blink::WebURLLoader;
  58
  59 namespace {
  60
  61 // A simple class to cache the memory usage for a given amount of time.
  62 class MemoryUsageCache {
  63  public:
  64   // Retrieves the Singleton.
  65   static MemoryUsageCache* GetInstance() {
  66     return Singleton<MemoryUsageCache>::get();
  67   }
  68
  69   MemoryUsageCache() : memory_value_(0) { Init(); }
  70   ~MemoryUsageCache() {}
  71
  72   void Init() {
  73     const unsigned int kCacheSeconds = 1;
  74     cache_valid_time_ = base::TimeDelta::FromSeconds(kCacheSeconds);
  75   }
  76
  77   // Returns true if the cached value is fresh.
  78   // Returns false if the cached value is stale, or if |cached_value| is NULL.
  79   bool IsCachedValueValid(size_t* cached_value) {
  80     base::AutoLock scoped_lock(lock_);
  81     if (!cached_value)
  82       return false;
  83     if (base::Time::Now() - last_updated_time_ > cache_valid_time_)
  84       return false;
  85     *cached_value = memory_value_;
  86     return true;
  87   };
  88
  89   // Setter for |memory_value_|, refreshes |last_updated_time_|.
  90   void SetMemoryValue(const size_t value) {
  91     base::AutoLock scoped_lock(lock_);
  92     memory_value_ = value;
  93     last_updated_time_ = base::Time::Now();
  94   }
  95
  96  private:
  97   // The cached memory value.
  98   size_t memory_value_;
  99
 100   // How long the cached value should remain valid.
 101   base::TimeDelta cache_valid_time_;
 102
 103   // The last time the cached value was updated.
 104   base::Time last_updated_time_;
 105
 106   base::Lock lock_;
 107 };
 108
 109 }  // namespace
 110
 111 namespace content {
 112
 113 static int ToMessageID(WebLocalizedString::Name name) {
 114   switch (name) {
 115     case WebLocalizedString::AXAMPMFieldText:
 116       return IDS_AX_AM_PM_FIELD_TEXT;
 117     case WebLocalizedString::AXButtonActionVerb:
 118       return IDS_AX_BUTTON_ACTION_VERB;
 119     case WebLocalizedString::AXCheckedCheckBoxActionVerb:
 120       return IDS_AX_CHECKED_CHECK_BOX_ACTION_VERB;
 121     case WebLocalizedString::AXDateTimeFieldEmptyValueText:
 122       return IDS_AX_DATE_TIME_FIELD_EMPTY_VALUE_TEXT;
 123     case WebLocalizedString::AXDayOfMonthFieldText:
 124       return IDS_AX_DAY_OF_MONTH_FIELD_TEXT;
 125     case WebLocalizedString::AXHeadingText:
 126       return IDS_AX_ROLE_HEADING;
 127     case WebLocalizedString::AXHourFieldText:
 128       return IDS_AX_HOUR_FIELD_TEXT;
 129     case WebLocalizedString::AXImageMapText:
 130       return IDS_AX_ROLE_IMAGE_MAP;
 131     case WebLocalizedString::AXLinkActionVerb:
 132       return IDS_AX_LINK_ACTION_VERB;
 133     case WebLocalizedString::AXLinkText:
 134       return IDS_AX_ROLE_LINK;
 135     case WebLocalizedString::AXListMarkerText:
 136       return IDS_AX_ROLE_LIST_MARKER;
 137     case WebLocalizedString::AXMediaDefault:
 138       return IDS_AX_MEDIA_DEFAULT;
 139     case WebLocalizedString::AXMediaAudioElement:
 140       return IDS_AX_MEDIA_AUDIO_ELEMENT;
 141     case WebLocalizedString::AXMediaVideoElement:
 142       return IDS_AX_MEDIA_VIDEO_ELEMENT;
 143     case WebLocalizedString::AXMediaMuteButton:
 144       return IDS_AX_MEDIA_MUTE_BUTTON;
 145     case WebLocalizedString::AXMediaUnMuteButton:
 146       return IDS_AX_MEDIA_UNMUTE_BUTTON;
 147     case WebLocalizedString::AXMediaPlayButton:
 148       return IDS_AX_MEDIA_PLAY_BUTTON;
 149     case WebLocalizedString::AXMediaPauseButton:
 150       return IDS_AX_MEDIA_PAUSE_BUTTON;
 151     case WebLocalizedString::AXMediaSlider:
 152       return IDS_AX_MEDIA_SLIDER;
 153     case WebLocalizedString::AXMediaSliderThumb:
 154       return IDS_AX_MEDIA_SLIDER_THUMB;
 155     case WebLocalizedString::AXMediaCurrentTimeDisplay:
 156       return IDS_AX_MEDIA_CURRENT_TIME_DISPLAY;
 157     case WebLocalizedString::AXMediaTimeRemainingDisplay:
 158       return IDS_AX_MEDIA_TIME_REMAINING_DISPLAY;
 159     case WebLocalizedString::AXMediaStatusDisplay:
 160       return IDS_AX_MEDIA_STATUS_DISPLAY;
 161     case WebLocalizedString::AXMediaEnterFullscreenButton:
 162       return IDS_AX_MEDIA_ENTER_FULL_SCREEN_BUTTON;
 163     case WebLocalizedString::AXMediaExitFullscreenButton:
 164       return IDS_AX_MEDIA_EXIT_FULL_SCREEN_BUTTON;
 165     case WebLocalizedString::AXMediaShowClosedCaptionsButton:
 166       return IDS_AX_MEDIA_SHOW_CLOSED_CAPTIONS_BUTTON;
 167     case WebLocalizedString::AXMediaHideClosedCaptionsButton:
 168       return IDS_AX_MEDIA_HIDE_CLOSED_CAPTIONS_BUTTON;
 169     case WebLocalizedString::AXMediaAudioElementHelp:
 170       return IDS_AX_MEDIA_AUDIO_ELEMENT_HELP;
 171     case WebLocalizedString::AXMediaVideoElementHelp:
 172       return IDS_AX_MEDIA_VIDEO_ELEMENT_HELP;
 173     case WebLocalizedString::AXMediaMuteButtonHelp:
 174       return IDS_AX_MEDIA_MUTE_BUTTON_HELP;
 175     case WebLocalizedString::AXMediaUnMuteButtonHelp:
 176       return IDS_AX_MEDIA_UNMUTE_BUTTON_HELP;
 177     case WebLocalizedString::AXMediaPlayButtonHelp:
 178       return IDS_AX_MEDIA_PLAY_BUTTON_HELP;
 179     case WebLocalizedString::AXMediaPauseButtonHelp:
 180       return IDS_AX_MEDIA_PAUSE_BUTTON_HELP;
 181     case WebLocalizedString::AXMediaSliderHelp:
 182       return IDS_AX_MEDIA_SLIDER_HELP;
 183     case WebLocalizedString::AXMediaSliderThumbHelp:
 184       return IDS_AX_MEDIA_SLIDER_THUMB_HELP;
 185     case WebLocalizedString::AXMediaCurrentTimeDisplayHelp:
 186       return IDS_AX_MEDIA_CURRENT_TIME_DISPLAY_HELP;
 187     case WebLocalizedString::AXMediaTimeRemainingDisplayHelp:
 188       return IDS_AX_MEDIA_TIME_REMAINING_DISPLAY_HELP;
 189     case WebLocalizedString::AXMediaStatusDisplayHelp:
 190       return IDS_AX_MEDIA_STATUS_DISPLAY_HELP;
 191     case WebLocalizedString::AXMediaEnterFullscreenButtonHelp:
 192       return IDS_AX_MEDIA_ENTER_FULL_SCREEN_BUTTON_HELP;
 193     case WebLocalizedString::AXMediaExitFullscreenButtonHelp:
 194       return IDS_AX_MEDIA_EXIT_FULL_SCREEN_BUTTON_HELP;
 195     case WebLocalizedString::AXMediaShowClosedCaptionsButtonHelp:
 196       return IDS_AX_MEDIA_SHOW_CLOSED_CAPTIONS_BUTTON_HELP;
 197     case WebLocalizedString::AXMediaHideClosedCaptionsButtonHelp:
 198       return IDS_AX_MEDIA_HIDE_CLOSED_CAPTIONS_BUTTON_HELP;
 199     case WebLocalizedString::AXMillisecondFieldText:
 200       return IDS_AX_MILLISECOND_FIELD_TEXT;
 201     case WebLocalizedString::AXMinuteFieldText:
 202       return IDS_AX_MINUTE_FIELD_TEXT;
 203     case WebLocalizedString::AXMonthFieldText:
 204       return IDS_AX_MONTH_FIELD_TEXT;
 205     case WebLocalizedString::AXRadioButtonActionVerb:
 206       return IDS_AX_RADIO_BUTTON_ACTION_VERB;
 207     case WebLocalizedString::AXSecondFieldText:
 208       return IDS_AX_SECOND_FIELD_TEXT;
 209     case WebLocalizedString::AXTextFieldActionVerb:
 210       return IDS_AX_TEXT_FIELD_ACTION_VERB;
 211     case WebLocalizedString::AXUncheckedCheckBoxActionVerb:
 212       return IDS_AX_UNCHECKED_CHECK_BOX_ACTION_VERB;
 213     case WebLocalizedString::AXWebAreaText:
 214       return IDS_AX_ROLE_WEB_AREA;
 215     case WebLocalizedString::AXWeekOfYearFieldText:
 216       return IDS_AX_WEEK_OF_YEAR_FIELD_TEXT;
 217     case WebLocalizedString::AXYearFieldText:
 218       return IDS_AX_YEAR_FIELD_TEXT;
 219     case WebLocalizedString::CalendarClear:
 220       return IDS_FORM_CALENDAR_CLEAR;
 221     case WebLocalizedString::CalendarToday:
 222       return IDS_FORM_CALENDAR_TODAY;
 223     case WebLocalizedString::DateFormatDayInMonthLabel:
 224       return IDS_FORM_DATE_FORMAT_DAY_IN_MONTH;
 225     case WebLocalizedString::DateFormatMonthLabel:
 226       return IDS_FORM_DATE_FORMAT_MONTH;
 227     case WebLocalizedString::DateFormatYearLabel:
 228       return IDS_FORM_DATE_FORMAT_YEAR;
 229     case WebLocalizedString::DetailsLabel:
 230       return IDS_DETAILS_WITHOUT_SUMMARY_LABEL;
 231     case WebLocalizedString::FileButtonChooseFileLabel:
 232       return IDS_FORM_FILE_BUTTON_LABEL;
 233     case WebLocalizedString::FileButtonChooseMultipleFilesLabel:
 234       return IDS_FORM_MULTIPLE_FILES_BUTTON_LABEL;
 235     case WebLocalizedString::FileButtonNoFileSelectedLabel:
 236       return IDS_FORM_FILE_NO_FILE_LABEL;
 237     case WebLocalizedString::InputElementAltText:
 238       return IDS_FORM_INPUT_ALT;
 239     case WebLocalizedString::KeygenMenuHighGradeKeySize:
 240       return IDS_KEYGEN_HIGH_GRADE_KEY;
 241     case WebLocalizedString::KeygenMenuMediumGradeKeySize:
 242       return IDS_KEYGEN_MED_GRADE_KEY;
 243     case WebLocalizedString::MissingPluginText:
 244       return IDS_PLUGIN_INITIALIZATION_ERROR;
 245     case WebLocalizedString::MultipleFileUploadText:
 246       return IDS_FORM_FILE_MULTIPLE_UPLOAD;
 247     case WebLocalizedString::OtherColorLabel:
 248       return IDS_FORM_OTHER_COLOR_LABEL;
 249     case WebLocalizedString::OtherDateLabel:
 250         return IDS_FORM_OTHER_DATE_LABEL;
 251     case WebLocalizedString::OtherMonthLabel:
 252       return IDS_FORM_OTHER_MONTH_LABEL;
 253     case WebLocalizedString::OtherTimeLabel:
 254       return IDS_FORM_OTHER_TIME_LABEL;
 255     case WebLocalizedString::OtherWeekLabel:
 256       return IDS_FORM_OTHER_WEEK_LABEL;
 257     case WebLocalizedString::PlaceholderForDayOfMonthField:
 258       return IDS_FORM_PLACEHOLDER_FOR_DAY_OF_MONTH_FIELD;
 259     case WebLocalizedString::PlaceholderForMonthField:
 260       return IDS_FORM_PLACEHOLDER_FOR_MONTH_FIELD;
 261     case WebLocalizedString::PlaceholderForYearField:
 262       return IDS_FORM_PLACEHOLDER_FOR_YEAR_FIELD;
 263     case WebLocalizedString::ResetButtonDefaultLabel:
 264       return IDS_FORM_RESET_LABEL;
 265     case WebLocalizedString::SearchableIndexIntroduction:
 266       return IDS_SEARCHABLE_INDEX_INTRO;
 267     case WebLocalizedString::SearchMenuClearRecentSearchesText:
 268       return IDS_RECENT_SEARCHES_CLEAR;
 269     case WebLocalizedString::SearchMenuNoRecentSearchesText:
 270       return IDS_RECENT_SEARCHES_NONE;
 271     case WebLocalizedString::SearchMenuRecentSearchesText:
 272       return IDS_RECENT_SEARCHES;
 273     case WebLocalizedString::SubmitButtonDefaultLabel:
 274       return IDS_FORM_SUBMIT_LABEL;
 275     case WebLocalizedString::ThisMonthButtonLabel:
 276       return IDS_FORM_THIS_MONTH_LABEL;
 277     case WebLocalizedString::ThisWeekButtonLabel:
 278       return IDS_FORM_THIS_WEEK_LABEL;
 279     case WebLocalizedString::ValidationBadInputForDateTime:
 280       return IDS_FORM_VALIDATION_BAD_INPUT_DATETIME;
 281     case WebLocalizedString::ValidationBadInputForNumber:
 282       return IDS_FORM_VALIDATION_BAD_INPUT_NUMBER;
 283     case WebLocalizedString::ValidationPatternMismatch:
 284       return IDS_FORM_VALIDATION_PATTERN_MISMATCH;
 285     case WebLocalizedString::ValidationRangeOverflow:
 286       return IDS_FORM_VALIDATION_RANGE_OVERFLOW;
 287     case WebLocalizedString::ValidationRangeOverflowDateTime:
 288       return IDS_FORM_VALIDATION_RANGE_OVERFLOW_DATETIME;
 289     case WebLocalizedString::ValidationRangeUnderflow:
 290       return IDS_FORM_VALIDATION_RANGE_UNDERFLOW;
 291     case WebLocalizedString::ValidationRangeUnderflowDateTime:
 292       return IDS_FORM_VALIDATION_RANGE_UNDERFLOW_DATETIME;
 293     case WebLocalizedString::ValidationStepMismatch:
 294       return IDS_FORM_VALIDATION_STEP_MISMATCH;
 295     case WebLocalizedString::ValidationStepMismatchCloseToLimit:
 296       return IDS_FORM_VALIDATION_STEP_MISMATCH_CLOSE_TO_LIMIT;
 297     case WebLocalizedString::ValidationTooLong:
 298       return IDS_FORM_VALIDATION_TOO_LONG;
 299     case WebLocalizedString::ValidationTypeMismatch:
 300       return IDS_FORM_VALIDATION_TYPE_MISMATCH;
 301     case WebLocalizedString::ValidationTypeMismatchForEmail:
 302       return IDS_FORM_VALIDATION_TYPE_MISMATCH_EMAIL;
 303     case WebLocalizedString::ValidationTypeMismatchForEmailEmpty:
 304       return IDS_FORM_VALIDATION_TYPE_MISMATCH_EMAIL_EMPTY;
 305     case WebLocalizedString::ValidationTypeMismatchForEmailEmptyDomain:
 306       return IDS_FORM_VALIDATION_TYPE_MISMATCH_EMAIL_EMPTY_DOMAIN;
 307     case WebLocalizedString::ValidationTypeMismatchForEmailEmptyLocal:
 308       return IDS_FORM_VALIDATION_TYPE_MISMATCH_EMAIL_EMPTY_LOCAL;
 309     case WebLocalizedString::ValidationTypeMismatchForEmailInvalidDomain:
 310       return IDS_FORM_VALIDATION_TYPE_MISMATCH_EMAIL_INVALID_DOMAIN;
 311     case WebLocalizedString::ValidationTypeMismatchForEmailInvalidDots:
 312       return IDS_FORM_VALIDATION_TYPE_MISMATCH_EMAIL_INVALID_DOTS;
 313     case WebLocalizedString::ValidationTypeMismatchForEmailInvalidLocal:
 314       return IDS_FORM_VALIDATION_TYPE_MISMATCH_EMAIL_INVALID_LOCAL;
 315     case WebLocalizedString::ValidationTypeMismatchForEmailNoAtSign:
 316       return IDS_FORM_VALIDATION_TYPE_MISMATCH_EMAIL_NO_AT_SIGN;
 317     case WebLocalizedString::ValidationTypeMismatchForMultipleEmail:
 318       return IDS_FORM_VALIDATION_TYPE_MISMATCH_MULTIPLE_EMAIL;
 319     case WebLocalizedString::ValidationTypeMismatchForURL:
 320       return IDS_FORM_VALIDATION_TYPE_MISMATCH_URL;
 321     case WebLocalizedString::ValidationValueMissing:
 322       return IDS_FORM_VALIDATION_VALUE_MISSING;
 323     case WebLocalizedString::ValidationValueMissingForCheckbox:
 324       return IDS_FORM_VALIDATION_VALUE_MISSING_CHECKBOX;
 325     case WebLocalizedString::ValidationValueMissingForFile:
 326       return IDS_FORM_VALIDATION_VALUE_MISSING_FILE;
 327     case WebLocalizedString::ValidationValueMissingForMultipleFile:
 328       return IDS_FORM_VALIDATION_VALUE_MISSING_MULTIPLE_FILE;
 329     case WebLocalizedString::ValidationValueMissingForRadio:
 330       return IDS_FORM_VALIDATION_VALUE_MISSING_RADIO;
 331     case WebLocalizedString::ValidationValueMissingForSelect:
 332       return IDS_FORM_VALIDATION_VALUE_MISSING_SELECT;
 333     case WebLocalizedString::WeekFormatTemplate:
 334       return IDS_FORM_INPUT_WEEK_TEMPLATE;
 335     case WebLocalizedString::WeekNumberLabel:
 336       return IDS_FORM_WEEK_NUMBER_LABEL;
 337     // This "default:" line exists to avoid compile warnings about enum
 338     // coverage when we add a new symbol to WebLocalizedString.h in WebKit.
 339     // After a planned WebKit patch is landed, we need to add a case statement
 340     // for the added symbol here.
 341     default:
 342       break;
 343   }
 344   return -1;
 345 }
 346
 347 BlinkPlatformImpl::BlinkPlatformImpl()
 348     : main_loop_(base::MessageLoop::current()),
 349       shared_timer_func_(NULL),
 350       shared_timer_fire_time_(0.0),
 351       shared_timer_fire_time_was_set_while_suspended_(false),
 352       shared_timer_suspended_(0) {}
 353
 354 BlinkPlatformImpl::~BlinkPlatformImpl() {
 355 }
 356
 357 WebURLLoader* BlinkPlatformImpl::createURLLoader() {
 358   return new WebURLLoaderImpl(this);
 359 }
 360
 361 WebSocketStreamHandle* BlinkPlatformImpl::createSocketStreamHandle() {
 362   return new WebSocketStreamHandleImpl(this);
 363 }
 364
 365 WebString BlinkPlatformImpl::userAgent() {
 366   return WebString::fromUTF8(GetContentClient()->GetUserAgent());
 367 }
 368
 369 WebString BlinkPlatformImpl::userAgent(const WebURL& url) {
 370   return userAgent();
 371 }
 372
 373 WebData BlinkPlatformImpl::parseDataURL(const WebURL& url,
 374                                         WebString& mimetype_out,
 375                                         WebString& charset_out) {
 376   std::string mime_type, char_set, data;
 377   if (net::DataURL::Parse(url, &mime_type, &char_set, &data)
 378       && net::IsSupportedMimeType(mime_type)) {
 379     mimetype_out = WebString::fromUTF8(mime_type);
 380     charset_out = WebString::fromUTF8(char_set);
 381     return data;
 382   }
 383   return WebData();
 384 }
 385
 386 WebURLError BlinkPlatformImpl::cancelledError(
 387     const WebURL& unreachableURL) const {
 388   return WebURLLoaderImpl::CreateError(unreachableURL, false, net::ERR_ABORTED);
 389 }
 390
 391 void BlinkPlatformImpl::decrementStatsCounter(const char* name) {
 392   base::StatsCounter(name).Decrement();
 393 }
 394
 395 void BlinkPlatformImpl::incrementStatsCounter(const char* name) {
 396   base::StatsCounter(name).Increment();
 397 }
 398
 399 void BlinkPlatformImpl::histogramCustomCounts(
 400     const char* name, int sample, int min, int max, int bucket_count) {
 401   // Copied from histogram macro, but without the static variable caching
 402   // the histogram because name is dynamic.
 403   base::HistogramBase* counter =
 404       base::Histogram::FactoryGet(name, min, max, bucket_count,
 405           base::HistogramBase::kUmaTargetedHistogramFlag);
 406   DCHECK_EQ(name, counter->histogram_name());
 407   counter->Add(sample);
 408 }
 409
 410 void BlinkPlatformImpl::histogramEnumeration(
 411     const char* name, int sample, int boundary_value) {
 412   // Copied from histogram macro, but without the static variable caching
 413   // the histogram because name is dynamic.
 414   base::HistogramBase* counter =
 415       base::LinearHistogram::FactoryGet(name, 1, boundary_value,
 416           boundary_value + 1, base::HistogramBase::kUmaTargetedHistogramFlag);
 417   DCHECK_EQ(name, counter->histogram_name());
 418   counter->Add(sample);
 419 }
 420
 421 void BlinkPlatformImpl::histogramSparse(const char* name, int sample) {
 422   // For sparse histograms, we can use the macro, as it does not incorporate a
 423   // static.
 424   UMA_HISTOGRAM_SPARSE_SLOWLY(name, sample);
 425 }
 426
 427 const unsigned char* BlinkPlatformImpl::getTraceCategoryEnabledFlag(
 428     const char* category_group) {
 429   return TRACE_EVENT_API_GET_CATEGORY_GROUP_ENABLED(category_group);
 430 }
 431
 432 long* BlinkPlatformImpl::getTraceSamplingState(
 433     const unsigned thread_bucket) {
 434   switch (thread_bucket) {
 435     case 0:
 436       return reinterpret_cast<long*>(&TRACE_EVENT_API_THREAD_BUCKET(0));
 437     case 1:
 438       return reinterpret_cast<long*>(&TRACE_EVENT_API_THREAD_BUCKET(1));
 439     case 2:
 440       return reinterpret_cast<long*>(&TRACE_EVENT_API_THREAD_BUCKET(2));
 441     default:
 442       NOTREACHED() << "Unknown thread bucket type.";
 443   }
 444   return NULL;
 445 }
 446
 447 COMPILE_ASSERT(
 448     sizeof(blink::Platform::TraceEventHandle) ==
 449         sizeof(base::debug::TraceEventHandle),
 450     TraceEventHandle_types_must_be_same_size);
 451
 452 blink::Platform::TraceEventHandle BlinkPlatformImpl::addTraceEvent(
 453     char phase,
 454     const unsigned char* category_group_enabled,
 455     const char* name,
 456     unsigned long long id,
 457     int num_args,
 458     const char** arg_names,
 459     const unsigned char* arg_types,
 460     const unsigned long long* arg_values,
 461     unsigned char flags) {
 462   base::debug::TraceEventHandle handle = TRACE_EVENT_API_ADD_TRACE_EVENT(
 463       phase, category_group_enabled, name, id,
 464       num_args, arg_names, arg_types, arg_values, NULL, flags);
 465   blink::Platform::TraceEventHandle result;
 466   memcpy(&result, &handle, sizeof(result));
 467   return result;
 468 }
 469
 470 void BlinkPlatformImpl::updateTraceEventDuration(
 471     const unsigned char* category_group_enabled,
 472     const char* name,
 473     TraceEventHandle handle) {
 474   base::debug::TraceEventHandle traceEventHandle;
 475   memcpy(&traceEventHandle, &handle, sizeof(handle));
 476   TRACE_EVENT_API_UPDATE_TRACE_EVENT_DURATION(
 477       category_group_enabled, name, traceEventHandle);
 478 }
 479
 480 namespace {
 481
 482 WebData loadAudioSpatializationResource(BlinkPlatformImpl* platform,
 483                                         const char* name) {
 484 #ifdef IDR_AUDIO_SPATIALIZATION_COMPOSITE
 485   if (!strcmp(name, "Composite")) {
 486     base::StringPiece resource =
 487         platform->GetDataResource(IDR_AUDIO_SPATIALIZATION_COMPOSITE,
 488                                   ui::SCALE_FACTOR_NONE);
 489     return WebData(resource.data(), resource.size());
 490   }
 491 #endif
 492
 493 #ifdef IDR_AUDIO_SPATIALIZATION_T000_P000
 494   const size_t kExpectedSpatializationNameLength = 31;
 495   if (strlen(name) != kExpectedSpatializationNameLength) {
 496     return WebData();
 497   }
 498
 499   // Extract the azimuth and elevation from the resource name.
 500   int azimuth = 0;
 501   int elevation = 0;
 502   int values_parsed =
 503       sscanf(name, "IRC_Composite_C_R0195_T%3d_P%3d", &azimuth, &elevation);
 504   if (values_parsed != 2) {
 505     return WebData();
 506   }
 507
 508   // The resource index values go through the elevations first, then azimuths.
 509   const int kAngleSpacing = 15;
 510
 511   // 0 <= elevation <= 90 (or 315 <= elevation <= 345)
 512   // in increments of 15 degrees.
 513   int elevation_index =
 514       elevation <= 90 ? elevation / kAngleSpacing :
 515       7 + (elevation - 315) / kAngleSpacing;
 516   bool is_elevation_index_good = 0 <= elevation_index && elevation_index < 10;
 517
 518   // 0 <= azimuth < 360 in increments of 15 degrees.
 519   int azimuth_index = azimuth / kAngleSpacing;
 520   bool is_azimuth_index_good = 0 <= azimuth_index && azimuth_index < 24;
 521
 522   const int kNumberOfElevations = 10;
 523   const int kNumberOfAudioResources = 240;
 524   int resource_index = kNumberOfElevations * azimuth_index + elevation_index;
 525   bool is_resource_index_good = 0 <= resource_index &&
 526       resource_index < kNumberOfAudioResources;
 527
 528   if (is_azimuth_index_good && is_elevation_index_good &&
 529       is_resource_index_good) {
 530     const int kFirstAudioResourceIndex = IDR_AUDIO_SPATIALIZATION_T000_P000;
 531     base::StringPiece resource =
 532         platform->GetDataResource(kFirstAudioResourceIndex + resource_index,
 533                                   ui::SCALE_FACTOR_NONE);
 534     return WebData(resource.data(), resource.size());
 535   }
 536 #endif  // IDR_AUDIO_SPATIALIZATION_T000_P000
 537
 538   NOTREACHED();
 539   return WebData();
 540 }
 541
 542 struct DataResource {
 543   const char* name;
 544   int id;
 545   ui::ScaleFactor scale_factor;
 546 };
 547
 548 const DataResource kDataResources[] = {
 549   { "missingImage", IDR_BROKENIMAGE, ui::SCALE_FACTOR_100P },
 550   { "missingImage@2x", IDR_BROKENIMAGE, ui::SCALE_FACTOR_200P },
 551   { "mediaplayerPause", IDR_MEDIAPLAYER_PAUSE_BUTTON, ui::SCALE_FACTOR_100P },
 552   { "mediaplayerPauseHover",
 553     IDR_MEDIAPLAYER_PAUSE_BUTTON_HOVER, ui::SCALE_FACTOR_100P },
 554   { "mediaplayerPauseDown",
 555     IDR_MEDIAPLAYER_PAUSE_BUTTON_DOWN, ui::SCALE_FACTOR_100P },
 556   { "mediaplayerPlay", IDR_MEDIAPLAYER_PLAY_BUTTON, ui::SCALE_FACTOR_100P },
 557   { "mediaplayerPlayHover",
 558     IDR_MEDIAPLAYER_PLAY_BUTTON_HOVER, ui::SCALE_FACTOR_100P },
 559   { "mediaplayerPlayDown",
 560     IDR_MEDIAPLAYER_PLAY_BUTTON_DOWN, ui::SCALE_FACTOR_100P },
 561   { "mediaplayerPlayDisabled",
 562     IDR_MEDIAPLAYER_PLAY_BUTTON_DISABLED, ui::SCALE_FACTOR_100P },
 563   { "mediaplayerSoundLevel3",
 564     IDR_MEDIAPLAYER_SOUND_LEVEL3_BUTTON, ui::SCALE_FACTOR_100P },
 565   { "mediaplayerSoundLevel3Hover",
 566     IDR_MEDIAPLAYER_SOUND_LEVEL3_BUTTON_HOVER, ui::SCALE_FACTOR_100P },
 567   { "mediaplayerSoundLevel3Down",
 568     IDR_MEDIAPLAYER_SOUND_LEVEL3_BUTTON_DOWN, ui::SCALE_FACTOR_100P },
 569   { "mediaplayerSoundLevel2",
 570     IDR_MEDIAPLAYER_SOUND_LEVEL2_BUTTON, ui::SCALE_FACTOR_100P },
 571   { "mediaplayerSoundLevel2Hover",
 572     IDR_MEDIAPLAYER_SOUND_LEVEL2_BUTTON_HOVER, ui::SCALE_FACTOR_100P },
 573   { "mediaplayerSoundLevel2Down",
 574     IDR_MEDIAPLAYER_SOUND_LEVEL2_BUTTON_DOWN, ui::SCALE_FACTOR_100P },
 575   { "mediaplayerSoundLevel1",
 576     IDR_MEDIAPLAYER_SOUND_LEVEL1_BUTTON, ui::SCALE_FACTOR_100P },
 577   { "mediaplayerSoundLevel1Hover",
 578     IDR_MEDIAPLAYER_SOUND_LEVEL1_BUTTON_HOVER, ui::SCALE_FACTOR_100P },
 579   { "mediaplayerSoundLevel1Down",
 580     IDR_MEDIAPLAYER_SOUND_LEVEL1_BUTTON_DOWN, ui::SCALE_FACTOR_100P },
 581   { "mediaplayerSoundLevel0",
 582     IDR_MEDIAPLAYER_SOUND_LEVEL0_BUTTON, ui::SCALE_FACTOR_100P },
 583   { "mediaplayerSoundLevel0Hover",
 584     IDR_MEDIAPLAYER_SOUND_LEVEL0_BUTTON_HOVER, ui::SCALE_FACTOR_100P },
 585   { "mediaplayerSoundLevel0Down",
 586     IDR_MEDIAPLAYER_SOUND_LEVEL0_BUTTON_DOWN, ui::SCALE_FACTOR_100P },
 587   { "mediaplayerSoundDisabled",
 588     IDR_MEDIAPLAYER_SOUND_DISABLED, ui::SCALE_FACTOR_100P },
 589   { "mediaplayerSliderThumb",
 590     IDR_MEDIAPLAYER_SLIDER_THUMB, ui::SCALE_FACTOR_100P },
 591   { "mediaplayerSliderThumbHover",
 592     IDR_MEDIAPLAYER_SLIDER_THUMB_HOVER, ui::SCALE_FACTOR_100P },
 593   { "mediaplayerSliderThumbDown",
 594     IDR_MEDIAPLAYER_SLIDER_THUMB_DOWN, ui::SCALE_FACTOR_100P },
 595   { "mediaplayerVolumeSliderThumb",
 596     IDR_MEDIAPLAYER_VOLUME_SLIDER_THUMB, ui::SCALE_FACTOR_100P },
 597   { "mediaplayerVolumeSliderThumbHover",
 598     IDR_MEDIAPLAYER_VOLUME_SLIDER_THUMB_HOVER, ui::SCALE_FACTOR_100P },
 599   { "mediaplayerVolumeSliderThumbDown",
 600     IDR_MEDIAPLAYER_VOLUME_SLIDER_THUMB_DOWN, ui::SCALE_FACTOR_100P },
 601   { "mediaplayerVolumeSliderThumbDisabled",
 602     IDR_MEDIAPLAYER_VOLUME_SLIDER_THUMB_DISABLED, ui::SCALE_FACTOR_100P },
 603   { "mediaplayerClosedCaption",
 604     IDR_MEDIAPLAYER_CLOSEDCAPTION_BUTTON, ui::SCALE_FACTOR_100P },
 605   { "mediaplayerClosedCaptionHover",
 606     IDR_MEDIAPLAYER_CLOSEDCAPTION_BUTTON_HOVER, ui::SCALE_FACTOR_100P },
 607   { "mediaplayerClosedCaptionDown",
 608     IDR_MEDIAPLAYER_CLOSEDCAPTION_BUTTON_DOWN, ui::SCALE_FACTOR_100P },
 609   { "mediaplayerClosedCaptionDisabled",
 610     IDR_MEDIAPLAYER_CLOSEDCAPTION_BUTTON_DISABLED, ui::SCALE_FACTOR_100P },
 611   { "mediaplayerFullscreen",
 612     IDR_MEDIAPLAYER_FULLSCREEN_BUTTON, ui::SCALE_FACTOR_100P },
 613   { "mediaplayerFullscreenHover",
 614     IDR_MEDIAPLAYER_FULLSCREEN_BUTTON_HOVER, ui::SCALE_FACTOR_100P },
 615   { "mediaplayerFullscreenDown",
 616     IDR_MEDIAPLAYER_FULLSCREEN_BUTTON_DOWN, ui::SCALE_FACTOR_100P },
 617   { "mediaplayerFullscreenDisabled",
 618     IDR_MEDIAPLAYER_FULLSCREEN_BUTTON_DISABLED, ui::SCALE_FACTOR_100P },
 619 #if defined(OS_ANDROID)
 620   { "mediaplayerOverlayPlay",
 621     IDR_MEDIAPLAYER_OVERLAY_PLAY_BUTTON, ui::SCALE_FACTOR_100P },
 622 #endif
 623 #if defined(OS_MACOSX)
 624   { "overhangPattern", IDR_OVERHANG_PATTERN, ui::SCALE_FACTOR_100P },
 625   { "overhangShadow", IDR_OVERHANG_SHADOW, ui::SCALE_FACTOR_100P },
 626 #endif
 627   { "panIcon", IDR_PAN_SCROLL_ICON, ui::SCALE_FACTOR_100P },
 628   { "searchCancel", IDR_SEARCH_CANCEL, ui::SCALE_FACTOR_100P },
 629   { "searchCancelPressed", IDR_SEARCH_CANCEL_PRESSED, ui::SCALE_FACTOR_100P },
 630   { "searchMagnifier", IDR_SEARCH_MAGNIFIER, ui::SCALE_FACTOR_100P },
 631   { "searchMagnifierResults",
 632     IDR_SEARCH_MAGNIFIER_RESULTS, ui::SCALE_FACTOR_100P },
 633   { "textAreaResizeCorner", IDR_TEXTAREA_RESIZER, ui::SCALE_FACTOR_100P },
 634   { "textAreaResizeCorner@2x", IDR_TEXTAREA_RESIZER, ui::SCALE_FACTOR_200P },
 635   { "inputSpeech", IDR_INPUT_SPEECH, ui::SCALE_FACTOR_100P },
 636   { "inputSpeechRecording", IDR_INPUT_SPEECH_RECORDING, ui::SCALE_FACTOR_100P },
 637   { "inputSpeechWaiting", IDR_INPUT_SPEECH_WAITING, ui::SCALE_FACTOR_100P },
 638   { "generatePassword", IDR_PASSWORD_GENERATION_ICON, ui::SCALE_FACTOR_100P },
 639   { "generatePasswordHover",
 640     IDR_PASSWORD_GENERATION_ICON_HOVER, ui::SCALE_FACTOR_100P },
 641   { "syntheticTouchCursor",
 642     IDR_SYNTHETIC_TOUCH_CURSOR, ui::SCALE_FACTOR_100P },
 643 };
 644
 645 }  // namespace
 646
 647 WebData BlinkPlatformImpl::loadResource(const char* name) {
 648   // Some clients will call into this method with an empty |name| when they have
 649   // optional resources.  For example, the PopupMenuChromium code can have icons
 650   // for some Autofill items but not for others.
 651   if (!strlen(name))
 652     return WebData();
 653
 654   // Check the name prefix to see if it's an audio resource.
 655   if (StartsWithASCII(name, "IRC_Composite", true) ||
 656       StartsWithASCII(name, "Composite", true))
 657     return loadAudioSpatializationResource(this, name);
 658
 659   // TODO(flackr): We should use a better than linear search here, a trie would
 660   // be ideal.
 661   for (size_t i = 0; i < arraysize(kDataResources); ++i) {
 662     if (!strcmp(name, kDataResources[i].name)) {
 663       base::StringPiece resource =
 664           GetDataResource(kDataResources[i].id,
 665                           kDataResources[i].scale_factor);
 666       return WebData(resource.data(), resource.size());
 667     }
 668   }
 669
 670   NOTREACHED() << "Unknown image resource " << name;
 671   return WebData();
 672 }
 673
 674 WebString BlinkPlatformImpl::queryLocalizedString(
 675     WebLocalizedString::Name name) {
 676   int message_id = ToMessageID(name);
 677   if (message_id < 0)
 678     return WebString();
 679   return GetLocalizedString(message_id);
 680 }
 681
 682 WebString BlinkPlatformImpl::queryLocalizedString(
 683     WebLocalizedString::Name name, int numeric_value) {
 684   return queryLocalizedString(name, base::IntToString16(numeric_value));
 685 }
 686
 687 WebString BlinkPlatformImpl::queryLocalizedString(
 688     WebLocalizedString::Name name, const WebString& value) {
 689   int message_id = ToMessageID(name);
 690   if (message_id < 0)
 691     return WebString();
 692   return ReplaceStringPlaceholders(GetLocalizedString(message_id), value, NULL);
 693 }
 694
 695 WebString BlinkPlatformImpl::queryLocalizedString(
 696     WebLocalizedString::Name name,
 697     const WebString& value1,
 698     const WebString& value2) {
 699   int message_id = ToMessageID(name);
 700   if (message_id < 0)
 701     return WebString();
 702   std::vector<base::string16> values;
 703   values.reserve(2);
 704   values.push_back(value1);
 705   values.push_back(value2);
 706   return ReplaceStringPlaceholders(
 707       GetLocalizedString(message_id), values, NULL);
 708 }
 709
 710 double BlinkPlatformImpl::currentTime() {
 711   return base::Time::Now().ToDoubleT();
 712 }
 713
 714 double BlinkPlatformImpl::monotonicallyIncreasingTime() {
 715   return base::TimeTicks::Now().ToInternalValue() /
 716       static_cast<double>(base::Time::kMicrosecondsPerSecond);
 717 }
 718
 719 void BlinkPlatformImpl::cryptographicallyRandomValues(
 720     unsigned char* buffer, size_t length) {
 721   base::RandBytes(buffer, length);
 722 }
 723
 724 void BlinkPlatformImpl::setSharedTimerFiredFunction(void (*func)()) {
 725   shared_timer_func_ = func;
 726 }
 727
 728 void BlinkPlatformImpl::setSharedTimerFireInterval(
 729     double interval_seconds) {
 730   shared_timer_fire_time_ = interval_seconds + monotonicallyIncreasingTime();
 731   if (shared_timer_suspended_) {
 732     shared_timer_fire_time_was_set_while_suspended_ = true;
 733     return;
 734   }
 735
 736   // By converting between double and int64 representation, we run the risk
 737   // of losing precision due to rounding errors. Performing computations in
 738   // microseconds reduces this risk somewhat. But there still is the potential
 739   // of us computing a fire time for the timer that is shorter than what we
 740   // need.
 741   // As the event loop will check event deadlines prior to actually firing
 742   // them, there is a risk of needlessly rescheduling events and of
 743   // needlessly looping if sleep times are too short even by small amounts.
 744   // This results in measurable performance degradation unless we use ceil() to
 745   // always round up the sleep times.
 746   int64 interval = static_cast<int64>(
 747       ceil(interval_seconds * base::Time::kMillisecondsPerSecond)
 748       * base::Time::kMicrosecondsPerMillisecond);
 749
 750   if (interval < 0)
 751     interval = 0;
 752
 753   shared_timer_.Stop();
 754   shared_timer_.Start(FROM_HERE, base::TimeDelta::FromMicroseconds(interval),
 755                       this, &BlinkPlatformImpl::DoTimeout);
 756   OnStartSharedTimer(base::TimeDelta::FromMicroseconds(interval));
 757 }
 758
 759 void BlinkPlatformImpl::stopSharedTimer() {
 760   shared_timer_.Stop();
 761 }
 762
 763 void BlinkPlatformImpl::callOnMainThread(
 764     void (*func)(void*), void* context) {
 765   main_loop_->PostTask(FROM_HERE, base::Bind(func, context));
 766 }
 767
 768 base::PlatformFile BlinkPlatformImpl::databaseOpenFile(
 769     const blink::WebString& vfs_file_name, int desired_flags) {
 770   return base::kInvalidPlatformFileValue;
 771 }
 772
 773 int BlinkPlatformImpl::databaseDeleteFile(
 774     const blink::WebString& vfs_file_name, bool sync_dir) {
 775   return -1;
 776 }
 777
 778 long BlinkPlatformImpl::databaseGetFileAttributes(
 779     const blink::WebString& vfs_file_name) {
 780   return 0;
 781 }
 782
 783 long long BlinkPlatformImpl::databaseGetFileSize(
 784     const blink::WebString& vfs_file_name) {
 785   return 0;
 786 }
 787
 788 long long BlinkPlatformImpl::databaseGetSpaceAvailableForOrigin(
 789     const blink::WebString& origin_identifier) {
 790   return 0;
 791 }
 792
 793 blink::WebString BlinkPlatformImpl::signedPublicKeyAndChallengeString(
 794     unsigned key_size_index,
 795     const blink::WebString& challenge,
 796     const blink::WebURL& url) {
 797   return blink::WebString("");
 798 }
 799
 800 static scoped_ptr<base::ProcessMetrics> CurrentProcessMetrics() {
 801   using base::ProcessMetrics;
 802 #if defined(OS_MACOSX)
 803   return scoped_ptr<ProcessMetrics>(
 804       // The default port provider is sufficient to get data for the current
 805       // process.
 806       ProcessMetrics::CreateProcessMetrics(base::GetCurrentProcessHandle(),
 807                                            NULL));
 808 #else
 809   return scoped_ptr<ProcessMetrics>(
 810       ProcessMetrics::CreateProcessMetrics(base::GetCurrentProcessHandle()));
 811 #endif
 812 }
 813
 814 static size_t getMemoryUsageMB(bool bypass_cache) {
 815   size_t current_mem_usage = 0;
 816   MemoryUsageCache* mem_usage_cache_singleton = MemoryUsageCache::GetInstance();
 817   if (!bypass_cache &&
 818       mem_usage_cache_singleton->IsCachedValueValid(&current_mem_usage))
 819     return current_mem_usage;
 820
 821   current_mem_usage = GetMemoryUsageKB() >> 10;
 822   mem_usage_cache_singleton->SetMemoryValue(current_mem_usage);
 823   return current_mem_usage;
 824 }
 825
 826 size_t BlinkPlatformImpl::memoryUsageMB() {
 827   return getMemoryUsageMB(false);
 828 }
 829
 830 size_t BlinkPlatformImpl::actualMemoryUsageMB() {
 831   return getMemoryUsageMB(true);
 832 }
 833
 834 size_t BlinkPlatformImpl::physicalMemoryMB() {
 835   return static_cast<size_t>(base::SysInfo::AmountOfPhysicalMemoryMB());
 836 }
 837
 838 size_t BlinkPlatformImpl::numberOfProcessors() {
 839   return static_cast<size_t>(base::SysInfo::NumberOfProcessors());
 840 }
 841
 842 void BlinkPlatformImpl::startHeapProfiling(
 843   const blink::WebString& prefix) {
 844   // FIXME(morrita): Make this built on windows.
 845 #if !defined(NO_TCMALLOC) && defined(USE_TCMALLOC) && !defined(OS_WIN)
 846   HeapProfilerStart(prefix.utf8().data());
 847 #endif
 848 }
 849
 850 void BlinkPlatformImpl::stopHeapProfiling() {
 851 #if !defined(NO_TCMALLOC) && defined(USE_TCMALLOC) && !defined(OS_WIN)
 852   HeapProfilerStop();
 853 #endif
 854 }
 855
 856 void BlinkPlatformImpl::dumpHeapProfiling(
 857   const blink::WebString& reason) {
 858 #if !defined(NO_TCMALLOC) && defined(USE_TCMALLOC) && !defined(OS_WIN)
 859   HeapProfilerDump(reason.utf8().data());
 860 #endif
 861 }
 862
 863 WebString BlinkPlatformImpl::getHeapProfile() {
 864 #if !defined(NO_TCMALLOC) && defined(USE_TCMALLOC) && !defined(OS_WIN)
 865   char* data = GetHeapProfile();
 866   WebString result = WebString::fromUTF8(std::string(data));
 867   free(data);
 868   return result;
 869 #else
 870   return WebString();
 871 #endif
 872 }
 873
 874 bool BlinkPlatformImpl::processMemorySizesInBytes(
 875     size_t* private_bytes,
 876     size_t* shared_bytes) {
 877   return CurrentProcessMetrics()->GetMemoryBytes(private_bytes, shared_bytes);
 878 }
 879
 880 bool BlinkPlatformImpl::memoryAllocatorWasteInBytes(size_t* size) {
 881   return base::allocator::GetAllocatorWasteSize(size);
 882 }
 883
 884 size_t BlinkPlatformImpl::maxDecodedImageBytes() {
 885 #if defined(OS_ANDROID)
 886   if (base::android::SysUtils::IsLowEndDevice()) {
 887     // Limit image decoded size to 3M pixels on low end devices.
 888     // 4 is maximum number of bytes per pixel.
 889     return 3 * 1024 * 1024 * 4;
 890   }
 891   // For other devices, limit decoded image size based on the amount of physical
 892   // memory. For a device with 2GB physical memory the limit is 16M pixels.
 893   return base::SysInfo::AmountOfPhysicalMemory() / 32;
 894 #else
 895   return noDecodedImageByteLimit;
 896 #endif
 897 }
 898
 899 void BlinkPlatformImpl::SuspendSharedTimer() {
 900   ++shared_timer_suspended_;
 901 }
 902
 903 void BlinkPlatformImpl::ResumeSharedTimer() {
 904   DCHECK_GT(shared_timer_suspended_, 0);
 905
 906   // The shared timer may have fired or been adjusted while we were suspended.
 907   if (--shared_timer_suspended_ == 0 &&
 908       (!shared_timer_.IsRunning() ||
 909        shared_timer_fire_time_was_set_while_suspended_)) {
 910     shared_timer_fire_time_was_set_while_suspended_ = false;
 911     setSharedTimerFireInterval(
 912         shared_timer_fire_time_ - monotonicallyIncreasingTime());
 913   }
 914 }
 915
 916 }  // namespace content