Revert of Oilpan: Move MediaStreamSource, MediaStreamComponent and MediaStreamDescriptor

Source/platform/mediastream/MediaStreamComponent.h

Index: Source/platform/mediastream/MediaStreamComponent.h
diff --git a/Source/platform/mediastream/MediaStreamComponent.h b/Source/platform/mediastream/MediaStreamComponent.h
index 3cda7d91120383c6e830a44dcce94d5418a6da57..69f58b29b2e933b0b287c67c9b77afdc9f0bd119 100644
--- a/Source/platform/mediastream/MediaStreamComponent.h
+++ b/Source/platform/mediastream/MediaStreamComponent.h
@@ -33,9 +33,9 @@
 #define MediaStreamComponent_h
 
 #include "platform/audio/AudioSourceProvider.h"
-#include "platform/heap/Handle.h"
 #include "wtf/PassOwnPtr.h"
 #include "wtf/PassRefPtr.h"
+#include "wtf/RefCounted.h"
 #include "wtf/ThreadingPrimitives.h"
 #include "wtf/text/WTFString.h"
 
@@ -45,15 +45,15 @@
 class MediaStreamSource;
 class WebAudioSourceProvider;
 
-class PLATFORM_EXPORT MediaStreamComponent FINAL : public GarbageCollectedFinalized<MediaStreamComponent> {
+class PLATFORM_EXPORT MediaStreamComponent : public RefCounted<MediaStreamComponent> {
 public:
     class ExtraData {
     public:
         virtual ~ExtraData() { }
     };
 
-    static MediaStreamComponent* create(MediaStreamSource*);
-    static MediaStreamComponent* create(const String& id, MediaStreamSource*);
+    static PassRefPtr<MediaStreamComponent> create(PassRefPtr<MediaStreamSource>);
+    static PassRefPtr<MediaStreamComponent> create(const String& id, PassRefPtr<MediaStreamSource>);
 
     MediaStreamSource* source() const { return m_source.get(); }
 
@@ -70,10 +70,8 @@
     ExtraData* extraData() const { return m_extraData.get(); }
     void setExtraData(PassOwnPtr<ExtraData> extraData) { m_extraData = extraData; }
 
-    void trace(Visitor*);
-
 private:
-    MediaStreamComponent(const String& id, MediaStreamSource*);
+    MediaStreamComponent(const String& id, PassRefPtr<MediaStreamSource>);
 
 #if ENABLE(WEB_AUDIO)
     // AudioSourceProviderImpl wraps a WebAudioSourceProvider::provideInput()
@@ -102,14 +100,14 @@
     AudioSourceProviderImpl m_sourceProvider;
 #endif // ENABLE(WEB_AUDIO)
 
-    Member<MediaStreamSource> m_source;
+    RefPtr<MediaStreamSource> m_source;
     String m_id;
     bool m_enabled;
     bool m_muted;
     OwnPtr<ExtraData> m_extraData;
 };
 
-typedef HeapVector<Member<MediaStreamComponent> > MediaStreamComponentVector;
+typedef Vector<RefPtr<MediaStreamComponent> > MediaStreamComponentVector;
 
 } // namespace blink