Workaround for DXVA incorrectly claiming to be done with Decode() too soon.

media/filters/gpu_video_decoder.h

 // Copyright (c) 2012 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_FILTERS_GPU_VIDEO_DECODER_H_
 #define MEDIA_FILTERS_GPU_VIDEO_DECODER_H_
 
 #include <list>
 #include <map>
 #include <utility>
@@ skipping 84 matching lines @@
     // actually corresponds to VideoDecodeAccelerator::Reset(), confusingly
     // enough).
     kDrainingDecoder,
     kDecoderDrained,
   };
 
   // If no demuxer read is in flight and no bitstream buffers are in the
   // decoder, kick some off demuxing/decoding.
   void EnsureDemuxOrDecode();
 
+  // Return true if more decode work can be piled on to the VDA.
+  bool CanMoreDecodeWorkBeDone();
+
   // Callback to pass to demuxer_stream_->Read() for receiving encoded bits.
   void RequestBufferDecode(DemuxerStream::Status status,
                            const scoped_refptr<DecoderBuffer>& buffer);
 
   // Enqueue a frame for later delivery (or drop it on the floor if a
   // vda->Reset() is in progress) and trigger out-of-line delivery of the oldest
   // ready frame to the client if there is a pending read.  A NULL |frame|
   // merely triggers delivery, and requires the ready_video_frames_ queue not be
   // empty.
   void EnqueueFrameAndTriggerFrameDelivery(
@@ skipping 101 matching lines @@
 
   // Indicates decoding error occurred.
   bool error_occured_;
 
   DISALLOW_COPY_AND_ASSIGN(GpuVideoDecoder);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_FILTERS_GPU_VIDEO_DECODER_H_