Make unprefixed EME APIs use platform and Chromium.

Source/modules/encryptedmedia/MediaKeys.h

 /*
  * Copyright (C) 2013 Apple 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 13 matching lines @@
  */
 
 #ifndef MediaKeys_h
 #define MediaKeys_h
 
 #if ENABLE(ENCRYPTED_MEDIA_V2)
 
 #include "bindings/v8/ScriptWrappable.h"
 #include "core/dom/EventTarget.h"
 #include "core/dom/ExceptionCode.h"
-#include "modules/encryptedmedia/CDM.h"
 #include "wtf/OwnPtr.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/RefCounted.h"
 #include "wtf/Uint8Array.h"
 #include "wtf/Vector.h"
 #include "wtf/text/WTFString.h"
 
 namespace WebCore {
 
+class CDM;
 class MediaKeySession;
 class HTMLMediaElement;
 
-class MediaKeys : public RefCounted<MediaKeys>, public ScriptWrappable, public CDMClient {
+// References are held by JS and HTMLMediaElement.
+// The CDM has the same lifetime as this object.
+// Maintains a reference to all MediaKeySessions created to ensure they live as
+// long as this object unless explicitly close()'d.
+class MediaKeys : public RefCounted<MediaKeys>, public ScriptWrappable {
 public:
     static PassRefPtr<MediaKeys> create(const String& keySystem, ExceptionCode&);
     ~MediaKeys();
 
     PassRefPtr<MediaKeySession> createSession(ScriptExecutionContext*, const String& mimeType, Uint8Array* initData, ExceptionCode&);
 
     const String& keySystem() const { return m_keySystem; }
-    CDM* cdm() { return m_cdm.get(); }
 
-    HTMLMediaElement* mediaElement() const { return m_mediaElement; }
     void setMediaElement(HTMLMediaElement*);
 
 protected:
-    // CDMClient:
-    virtual MediaPlayer* cdmMediaPlayer(const CDM*) const OVERRIDE;
-
     MediaKeys(const String& keySystem, PassOwnPtr<CDM>);
 
     Vector<RefPtr<MediaKeySession> > m_sessions;
 
     HTMLMediaElement* m_mediaElement;
-    String m_keySystem;
+    const String m_keySystem;
     OwnPtr<CDM> m_cdm;
 };
 
 }
 
 #endif // ENABLE(ENCRYPTED_MEDIA_V2)
 
 #endif // MediaKeys_h