Add minimal implementation of unprefixed MediaSource API that has feature parity with prefixed API

Source/modules/mediasource/SourceBufferList.h

Index: Source/modules/mediasource/SourceBufferList.h
diff --git a/Source/modules/mediasource/WebKitSourceBufferList.h b/Source/modules/mediasource/SourceBufferList.h
similarity index 73%
copy from Source/modules/mediasource/WebKitSourceBufferList.h
copy to Source/modules/mediasource/SourceBufferList.h
index c8a4b5cc08510dbe0558e9df2f948f5a107f0ea8..753b3aab1c48961cf10c7965d551be55831ed676 100644
--- a/Source/modules/mediasource/WebKitSourceBufferList.h
+++ b/Source/modules/mediasource/SourceBufferList.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2012 Google Inc. 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
@@ -28,8 +28,8 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef WebKitSourceBufferList_h
-#define WebKitSourceBufferList_h
+#ifndef SourceBufferList_h
+#define SourceBufferList_h
 
 #include "bindings/v8/ScriptWrappable.h"
 #include "core/dom/EventTarget.h"
@@ -38,37 +38,38 @@
 
 namespace WebCore {
 
-class WebKitSourceBuffer;
+class SourceBuffer;
 class GenericEventQueue;
 
-class WebKitSourceBufferList : public RefCounted<WebKitSourceBufferList>, public ScriptWrappable, public EventTarget {
+class SourceBufferList : public RefCounted<SourceBufferList>, public ScriptWrappable, public EventTarget {
 public:
-    static PassRefPtr<WebKitSourceBufferList> create(ScriptExecutionContext* context, GenericEventQueue* asyncEventQueue)
+    static PassRefPtr<SourceBufferList> create(ScriptExecutionContext* context, GenericEventQueue* asyncEventQueue)
     {
-        return adoptRef(new WebKitSourceBufferList(context, asyncEventQueue));
+        return adoptRef(new SourceBufferList(context, asyncEventQueue));
     }
-    virtual ~WebKitSourceBufferList() { }
+    virtual ~SourceBufferList();
 
     unsigned long length() const;
-    WebKitSourceBuffer* item(unsigned index) const;
+    SourceBuffer* item(unsigned index) const;
 
-    void add(PassRefPtr<WebKitSourceBuffer>);
-    bool remove(WebKitSourceBuffer*);
+    void add(PassRefPtr<SourceBuffer>);
+    void remove(SourceBuffer*);
+    bool contains(SourceBuffer*);
     void clear();
 
     // EventTarget interface
     virtual const AtomicString& interfaceName() const OVERRIDE;
     virtual ScriptExecutionContext* scriptExecutionContext() const OVERRIDE;
 
-    using RefCounted<WebKitSourceBufferList>::ref;
-    using RefCounted<WebKitSourceBufferList>::deref;
+    using RefCounted<SourceBufferList>::ref;
+    using RefCounted<SourceBufferList>::deref;
 
 protected:
     virtual EventTargetData* eventTargetData() OVERRIDE;
     virtual EventTargetData* ensureEventTargetData() OVERRIDE;
 
 private:
-    WebKitSourceBufferList(ScriptExecutionContext*, GenericEventQueue*);
+    SourceBufferList(ScriptExecutionContext*, GenericEventQueue*);
 
     void createAndFireEvent(const AtomicString&);
 
@@ -79,7 +80,7 @@ private:
     ScriptExecutionContext* m_scriptExecutionContext;
     GenericEventQueue* m_asyncEventQueue;
 
-    Vector<RefPtr<WebKitSourceBuffer> > m_list;
+    Vector<RefPtr<SourceBuffer> > m_list;
 };
 
 } // namespace WebCore