Reduce SuspendableObjects

third_party/WebKit/Source/modules/mediasource/MediaSource.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 89 matching lines @@
   DEFINE_STATIC_LOCAL(const AtomicString, closed, ("closed"));
   return closed;
 }
 
 const AtomicString& MediaSource::endedKeyword() {
   DEFINE_STATIC_LOCAL(const AtomicString, ended, ("ended"));
   return ended;
 }
 
 MediaSource* MediaSource::create(ExecutionContext* context) {
-  MediaSource* mediaSource = new MediaSource(context);
-  mediaSource->suspendIfNeeded();
-  return mediaSource;
+  return new MediaSource(context);
 }
 
 MediaSource::MediaSource(ExecutionContext* context)
-    : SuspendableObject(context),
+    : ContextLifecycleObserver(context),
       m_readyState(closedKeyword()),
       m_asyncEventQueue(GenericEventQueue::create(this)),
       m_attachedElement(nullptr),
       m_sourceBuffers(SourceBufferList::create(getExecutionContext(),
                                                m_asyncEventQueue.get())),
       m_activeSourceBuffers(SourceBufferList::create(getExecutionContext(),
                                                      m_asyncEventQueue.get())),
       m_liveSeekableRange(TimeRanges::create()),
       m_addedToRegistryCounter(0) {
   BLINK_MSLOG << __func__ << " this=" << this;
@@ skipping 185 matching lines @@
   BLINK_MSLOG << __func__ << "(" << type << ") -> "
               << (result ? "true" : "false");
   return result;
 }
 
 const AtomicString& MediaSource::interfaceName() const {
   return EventTargetNames::MediaSource;
 }
 
 ExecutionContext* MediaSource::getExecutionContext() const {
-  return SuspendableObject::getExecutionContext();
+  return ContextLifecycleObserver::getExecutionContext();
 }
 
 DEFINE_TRACE(MediaSource) {
   visitor->trace(m_asyncEventQueue);
   visitor->trace(m_attachedElement);
   visitor->trace(m_sourceBuffers);
   visitor->trace(m_activeSourceBuffers);
   visitor->trace(m_liveSeekableRange);
   EventTargetWithInlineData::trace(visitor);
-  SuspendableObject::trace(visitor);
+  ContextLifecycleObserver::trace(visitor);
 }
 
 void MediaSource::setWebMediaSourceAndOpen(
     std::unique_ptr<WebMediaSource> webMediaSource) {
   TRACE_EVENT_ASYNC_END0("media", "MediaSource::attachToElement", this);
   DCHECK(webMediaSource);
   DCHECK(!m_webMediaSource);
   DCHECK(m_attachedElement);
   m_webMediaSource = std::move(webMediaSource);
   setReadyState(openKeyword());
@@ skipping 471 matching lines @@
   event->setTarget(this);
 
   m_asyncEventQueue->enqueueEvent(event);
 }
 
 URLRegistry& MediaSource::registry() const {
   return MediaSourceRegistry::registry();
 }
 
 }  // namespace blink