Merge M51: "Disable idle suspend for GpuVideoDecoder produced frames on OSX, Win."

media/blink/webmediaplayer_impl.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_IMPL_H_
 #define MEDIA_BLINK_WEBMEDIAPLAYER_IMPL_H_
 
 #include <stdint.h>
 
 #include <string>
@@ skipping 472 matching lines @@
 
   // For requesting surfaces on behalf of the Android H/W decoder in fullscreen.
   // This will be null everywhere but Android.
   SurfaceManager* surface_manager_;
 
   // Suppresses calls to OnPipelineError() after destruction / shutdown has been
   // started; prevents us from spuriously logging errors that are transient or
   // unimportant.
   bool suppress_destruction_errors_;
 
+  // State indicating if it's okay to suspend or not. Updated on the first time
+  // OnSuspendRequested() is called. If the state is UNKNOWN, the current frame
+  // from the compositor will be queried to see if suspend is supported; the
+  // state will be set to YES or NO respectively if a frame is available.
+  enum class CanSuspendState { UNKNOWN, YES, NO };
+  CanSuspendState can_suspend_state_;
+
   DISALLOW_COPY_AND_ASSIGN(WebMediaPlayerImpl);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_BLINK_WEBMEDIAPLAYER_IMPL_H_