Don't mark a WebMediaPlayer as idle until it has size and first frame.

media/blink/webmediaplayer_delegate.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef MEDIA_BLINK_WEBMEDIAPLAYER_DELEGATE_H_
 #define MEDIA_BLINK_WEBMEDIAPLAYER_DELEGATE_H_
 
 namespace blink {
 class WebMediaPlayer;
 }
@@ skipping 25 matching lines @@
   virtual int AddObserver(Observer* observer) = 0;
   virtual void RemoveObserver(int delegate_id) = 0;
 
   // The specified player started playing media.
   virtual void DidPlay(int delegate_id,
                        bool has_video,
                        bool has_audio,
                        bool is_remote,
                        base::TimeDelta duration) = 0;
 
-  // The specified player stopped playing media.
+  // The specified player stopped playing media. This may be called at any time
+  // with or without a DidPlay() having previously occurred. Calling this will
+  // cause the delegate to be registered for idle suspension. I.e., after some
+  // time elapses without a DidPlay(), OnSuspendRequested() will be issued.
   virtual void DidPause(int delegate_id, bool reached_end_of_stream) = 0;
 
   // The specified player was destroyed or suspended.  This may be called
   // multiple times in row. Note: Clients must still call RemoveObserver() to
   // unsubscribe from callbacks.
   virtual void PlayerGone(int delegate_id) = 0;
 
   // Returns whether the render frame is currently hidden.
   virtual bool IsHidden() = 0;
 
  protected:
   virtual ~WebMediaPlayerDelegate() {}
 };
 
 }  // namespace media
 
 #endif  // MEDIA_BLINK_WEBMEDIAPLAYER_DELEGATE_H_