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

Source/modules/mediasource/SourceBuffer.h

Index: Source/modules/mediasource/SourceBuffer.h
diff --git a/Source/modules/mediasource/MediaSourceBase.h b/Source/modules/mediasource/SourceBuffer.h
similarity index 57%
copy from Source/modules/mediasource/MediaSourceBase.h
copy to Source/modules/mediasource/SourceBuffer.h
index 60a0ebf7a3aea7ca8ed8a72da01d2293e37cd1b5..464487a07de3de30ea2796951dec28206ca24a7a 100644
--- a/Source/modules/mediasource/MediaSourceBase.h
+++ b/Source/modules/mediasource/SourceBuffer.h
@@ -28,42 +28,41 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef MediaSourceBase_h
-#define MediaSourceBase_h
+#ifndef SourceBuffer_h
+#define SourceBuffer_h
 
+#include "bindings/v8/ScriptWrappable.h"
 #include "core/dom/ActiveDOMObject.h"
 #include "core/dom/EventTarget.h"
-#include "core/html/URLRegistry.h"
-#include "core/platform/graphics/MediaSourcePrivate.h"
-#include "wtf/PassOwnPtr.h"
+#include "core/dom/ExceptionCode.h"
+#include "core/platform/Timer.h"
+#include "wtf/PassRefPtr.h"
 #include "wtf/RefCounted.h"
+#include "wtf/text/WTFString.h"
 
 namespace WebCore {
-
 class GenericEventQueue;
+class MediaSource;
+class SourceBufferPrivate;
+class TimeRanges;
 
-class MediaSourceBase : public RefCounted<MediaSourceBase>, public ActiveDOMObject, public EventTarget, public URLRegistrable {
+class SourceBuffer : public RefCounted<SourceBuffer>, public ActiveDOMObject, public EventTarget, public ScriptWrappable {
 public:
-    static const AtomicString& openKeyword();
-    static const AtomicString& closedKeyword();
-    static const AtomicString& endedKeyword();
-
-    virtual ~MediaSourceBase();
+    static PassRefPtr<SourceBuffer> create(PassOwnPtr<SourceBufferPrivate>, MediaSource*, GenericEventQueue*);
 
-    void setPrivateAndOpen(PassOwnPtr<MediaSourcePrivate>);
-    void addedToRegistry();
-    void removedFromRegistry();
-    void openIfInEndedState();
-    bool isOpen() const;
-    bool isClosed() const;
-    void close();
+    virtual ~SourceBuffer();
 
-    double duration() const;
-    void setDuration(double, ExceptionCode&);
-    const AtomicString& readyState() const { return m_readyState; }
-    virtual void setReadyState(const AtomicString&);
-    void endOfStream(const AtomicString& error, ExceptionCode&);
+    // SourceBuffer.idl methods
+    bool updating() const { return m_updating; }
+    PassRefPtr<TimeRanges> buffered(ExceptionCode&) const;
+    double timestampOffset() const;
+    void setTimestampOffset(double, ExceptionCode&);
+    void appendBuffer(PassRefPtr<ArrayBuffer> data, ExceptionCode&);
+    void appendBuffer(PassRefPtr<ArrayBufferView> data, ExceptionCode&);
+    void abort(ExceptionCode&);
 
+    void abortIfUpdating();
+    void removedFromMediaSource();
 
     // ActiveDOMObject interface
     virtual bool hasPendingActivity() const OVERRIDE;
@@ -71,33 +70,39 @@ public:
 
     // EventTarget interface
     virtual ScriptExecutionContext* scriptExecutionContext() const OVERRIDE;
+    virtual const AtomicString& interfaceName() const OVERRIDE;
+
+    using RefCounted<SourceBuffer>::ref;
+    using RefCounted<SourceBuffer>::deref;
+
+protected:
+    // EventTarget interface
     virtual EventTargetData* eventTargetData() OVERRIDE;
     virtual EventTargetData* ensureEventTargetData() OVERRIDE;
     virtual void refEventTarget() OVERRIDE { ref(); }
     virtual void derefEventTarget() OVERRIDE { deref(); }
 
-    // URLRegistrable interface
-    virtual URLRegistry& registry() const OVERRIDE;
+private:
+    SourceBuffer(PassOwnPtr<SourceBufferPrivate>, MediaSource*, GenericEventQueue*);
 
-    virtual void reportMemoryUsage(MemoryObjectInfo*) const OVERRIDE;
+    bool isRemoved() const;
+    void scheduleEvent(const AtomicString& eventName);
 
-    using RefCounted<MediaSourceBase>::ref;
-    using RefCounted<MediaSourceBase>::deref;
+    void appendBufferInternal(unsigned char*, unsigned, ExceptionCode&);
+    void appendBufferTimerFired(Timer<SourceBuffer>*);
 
-protected:
-    explicit MediaSourceBase(ScriptExecutionContext*);
+    OwnPtr<SourceBufferPrivate> m_private;
+    MediaSource* m_source;
+    GenericEventQueue* m_asyncEventQueue;
+    EventTargetData m_eventTargetData;
 
-    PassOwnPtr<SourceBufferPrivate> createSourceBufferPrivate(const String& type, const MediaSourcePrivate::CodecsArray&, ExceptionCode&);
-    void scheduleEvent(const AtomicString& eventName);
-    GenericEventQueue* asyncEventQueue() const { return m_asyncEventQueue.get(); }
+    bool m_updating;
+    double m_timestampOffset;
 
-private:
-    OwnPtr<MediaSourcePrivate> m_private;
-    EventTargetData m_eventTargetData;
-    AtomicString m_readyState;
-    OwnPtr<GenericEventQueue> m_asyncEventQueue;
+    Vector<unsigned char> m_pendingAppendData;
+    Timer<SourceBuffer> m_appendBufferTimer;
 };
 
-}
+} // namespace WebCore
 
 #endif