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

Source/modules/mediasource/SourceBufferList.h

 /*
- * 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
  * 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
  * copyright notice, this list of conditions and the following disclaimer
  * in the documentation and/or other materials provided with the
  * distribution.
  *     * Neither the name of Google Inc. nor the names of its
  * contributors may be used to endorse or promote products derived from
  * this software without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * 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"
 #include "wtf/RefCounted.h"
 #include "wtf/Vector.h"
 
 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;
+    unsigned long length() const { return m_list.size(); }
+    SourceBuffer* item(unsigned long index) const { return (index < m_list.size()) ? m_list[index].get() : 0; }
 
-    void add(PassRefPtr<WebKitSourceBuffer>);
-    bool remove(WebKitSourceBuffer*);
+    void add(PassRefPtr<SourceBuffer>);
+    void remove(SourceBuffer*);
+    bool contains(SourceBuffer* buffer) { return m_list.find(buffer) != notFound; }
     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&);
+    void scheduleEvent(const AtomicString&);
 
     virtual void refEventTarget() OVERRIDE { ref(); }
     virtual void derefEventTarget() OVERRIDE { deref(); }
 
     EventTargetData m_eventTargetData;
     ScriptExecutionContext* m_scriptExecutionContext;
     GenericEventQueue* m_asyncEventQueue;
 
-    Vector<RefPtr<WebKitSourceBuffer> > m_list;
+    Vector<RefPtr<SourceBuffer> > m_list;
 };
 
 } // namespace WebCore
 
 #endif