Reland: [Oilpan] Move MediaStream{Source|Component|Descriptor} to Oilpan heap

third_party/WebKit/Source/platform/mediastream/MediaStreamComponent.cpp

 /*
  * Copyright (C) 2011 Ericsson AB. All rights reserved.
  * 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.
@@ skipping 21 matching lines @@
 #include "config.h"
 #include "platform/mediastream/MediaStreamComponent.h"
 
 #include "platform/UUID.h"
 #include "platform/audio/AudioBus.h"
 #include "platform/mediastream/MediaStreamSource.h"
 #include "public/platform/WebAudioSourceProvider.h"
 
 namespace blink {
 
-PassRefPtr<MediaStreamComponent> MediaStreamComponent::create(PassRefPtr<MediaStreamSource> source)
+MediaStreamComponent* MediaStreamComponent::create(MediaStreamSource* source)
 {
-    return adoptRef(new MediaStreamComponent(createCanonicalUUIDString(), source));
+    return new MediaStreamComponent(createCanonicalUUIDString(), source);
 }
 
-PassRefPtr<MediaStreamComponent> MediaStreamComponent::create(const String& id, PassRefPtr<MediaStreamSource> source)
+MediaStreamComponent* MediaStreamComponent::create(const String& id, MediaStreamSource* source)
 {
-    return adoptRef(new MediaStreamComponent(id, source));
+    return new MediaStreamComponent(id, source);
 }
 
-MediaStreamComponent::MediaStreamComponent(const String& id, PassRefPtr<MediaStreamSource> source)
+MediaStreamComponent::MediaStreamComponent(const String& id, MediaStreamSource* source)
     : m_source(source)
     , m_id(id)
     , m_enabled(true)
     , m_muted(false)
 {
     ASSERT(m_id.length());
 }
 
 #if ENABLE(WEB_AUDIO)
 void MediaStreamComponent::AudioSourceProviderImpl::wrap(WebAudioSourceProvider* provider)
@@ skipping 17 matching lines @@
     // Wrap the AudioBus channel data using WebVector.
     size_t n = bus->numberOfChannels();
     WebVector<float*> webAudioData(n);
     for (size_t i = 0; i < n; ++i)
         webAudioData[i] = bus->channel(i)->mutableData();
 
     m_webAudioSourceProvider->provideInput(webAudioData, framesToProcess);
 }
 #endif // #if ENABLE(WEB_AUDIO)
 
+DEFINE_TRACE(MediaStreamComponent)
+{
+    visitor->trace(m_source);
+}
+
 } // namespace blink
-