Move MediaMetadata timer to frame-specific TaskRunnerTimer.

third_party/WebKit/Source/modules/mediasession/MediaMetadata.cpp

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "modules/mediasession/MediaMetadata.h"
 
 #include "bindings/core/v8/ExceptionState.h"
 #include "bindings/core/v8/ScriptState.h"
 #include "bindings/core/v8/ToV8.h"
+#include "core/dom/TaskRunnerHelper.h"
 #include "modules/mediasession/MediaImage.h"
 #include "modules/mediasession/MediaMetadataInit.h"
 #include "modules/mediasession/MediaSession.h"
 
 namespace blink {
 
 // static
 MediaMetadata* MediaMetadata::create(ScriptState* scriptState,
                                      const MediaMetadataInit& metadata,
                                      ExceptionState& exceptionState) {
   return new MediaMetadata(scriptState, metadata, exceptionState);
 }
 
 MediaMetadata::MediaMetadata(ScriptState* scriptState,
                              const MediaMetadataInit& metadata,
                              ExceptionState& exceptionState)
-    : m_notifySessionTimer(this, &MediaMetadata::notifySessionTimerFired) {
+    : m_notifySessionTimer(
+          TaskRunnerHelper::get(TaskType::MiscPlatformAPI, scriptState),
+          this,
+          &MediaMetadata::notifySessionTimerFired) {
   m_title = metadata.title();
   m_artist = metadata.artist();
   m_album = metadata.album();
   setArtworkInternal(scriptState, metadata.artwork(), exceptionState);
 }
 
 String MediaMetadata::title() const {
   return m_title;
 }
 
@@ skipping 77 matching lines @@
   DCHECK(!exceptionState.hadException());
   m_artwork.swap(processedArtwork);
 }
 
 DEFINE_TRACE(MediaMetadata) {
   visitor->trace(m_artwork);
   visitor->trace(m_session);
 }
 
 }  // namespace blink