Fix VideoRendererBase to allow the decoder to be flushed with a pending read.

media/base/mock_filters.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.
 //
 // A new breed of mock media filters, this time using gmock!  Feel free to add
 // actions if you need interesting side-effects (i.e., copying data to the
 // buffer passed into MockDataSource::Read()).
 //
 // Don't forget you can use StrictMock<> and NiceMock<> if you want the mock
 // filters to fail the test or do nothing when an unexpected method is called.
@@ skipping 129 matching lines @@
 
  private:
   DISALLOW_COPY_AND_ASSIGN(MockDemuxerStream);
 };
 
 class MockVideoDecoder : public VideoDecoder {
  public:
   MockVideoDecoder();
 
   // Filter implementation.
+  MOCK_METHOD1(Flush, void(const base::Closure& callback));
   MOCK_METHOD1(Stop, void(const base::Closure& callback));
   MOCK_METHOD1(SetPlaybackRate, void(float playback_rate));
   MOCK_METHOD2(Seek, void(base::TimeDelta time, const PipelineStatusCB& cb));
   MOCK_METHOD0(OnAudioRendererDisabled, void());
 
   // VideoDecoder implementation.
   MOCK_METHOD3(Initialize, void(DemuxerStream* stream,
                                 const PipelineStatusCB& status_cb,
                                 const StatisticsCB& statistics_cb));
   MOCK_METHOD1(Read, void(const ReadCB& read_cb));
@@ skipping 148 matching lines @@
  public:
   MockStatisticsCB();
   ~MockStatisticsCB();
 
   MOCK_METHOD1(OnStatistics, void(const media::PipelineStatistics& statistics));
 };
 
 }  // namespace media
 
 #endif  // MEDIA_BASE_MOCK_FILTERS_H_