Move DataSource::SetPreload() to BufferedDataSource.

media/base/mock_filters.h

Index: media/base/mock_filters.h
diff --git a/media/base/mock_filters.h b/media/base/mock_filters.h
index 152619d48665f4fe2ea3157d6450b78ea9c81b8c..c63d1d8cc8533cd49d5f373ea2faedc2a8760138 100644
--- a/media/base/mock_filters.h
+++ b/media/base/mock_filters.h
@@ -84,7 +84,6 @@ class MockDataSource : public DataSource {
   MOCK_METHOD4(Read, void(int64 position, size_t size, uint8* data,
                           const DataSource::ReadCB& callback));
   MOCK_METHOD1(GetSize, bool(int64* size_out));
-  MOCK_METHOD1(SetPreload, void(Preload preload));
   MOCK_METHOD1(SetBitrate, void(int bitrate));
   MOCK_METHOD0(IsStreaming, bool());
 
@@ -109,7 +108,6 @@ class MockDemuxer : public Demuxer {
   virtual void set_host(DemuxerHost* demuxer_host);
   MOCK_METHOD1(Stop, void(const base::Closure& callback));
   MOCK_METHOD1(SetPlaybackRate, void(float playback_rate));
-  MOCK_METHOD1(SetPreload, void(Preload preload));
   MOCK_METHOD2(Seek, void(base::TimeDelta time, const PipelineStatusCB& cb));
   MOCK_METHOD0(OnAudioRendererDisabled, void());
   MOCK_METHOD0(GetBitrate, int());