Eliminate MediaPlayer & MediaPlayerClient abstractions

Source/modules/mediasource/MediaSource.cpp

 /*
  * 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
@@ skipping 424 matching lines @@
     if (newDuration < oldDuration) {
         for (size_t i = 0; i < m_sourceBuffers->length(); ++i)
             m_sourceBuffers->item(i)->remove(newDuration, oldDuration, ASSERT_NO_EXCEPTION);
     }
 
     // 5. If a user agent is unable to partially render audio frames or text cues that start before and end after the duration, then run the following steps:
     // NOTE: Currently we assume that the media engine is able to render partial frames/cues. If a media
     // engine gets added that doesn't support this, then we'll need to add logic to handle the substeps.
 
     // 6. Update the media controller duration to new duration and run the HTMLMediaElement duration change algorithm.
-    m_attachedElement->durationChanged(newDuration, requestSeek);
+    m_attachedElement->mediaPlayerDurationChanged(newDuration, requestSeek);
 }
 
 void MediaSource::setReadyState(const AtomicString& state)
 {
     ASSERT(state == openKeyword() || state == closedKeyword() || state == endedKeyword());
 
     AtomicString oldState = readyState();
     WTF_LOG(Media, "MediaSource::setReadyState() %p : %s -> %s", this, oldState.ascii().data(), state.ascii().data());
 
     if (state == closedKeyword()) {
@@ skipping 157 matching lines @@
 
     m_asyncEventQueue->enqueueEvent(event.release());
 }
 
 URLRegistry& MediaSource::registry() const
 {
     return MediaSourceRegistry::registry();
 }
 
 } // namespace blink