Replace size_t with int in a few media classes.

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 63 matching lines @@
   MockDataSource();
 
   virtual void set_host(DataSourceHost* data_source_host);
 
   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());
 
   // DataSource implementation.
-  MOCK_METHOD4(Read, void(int64 position, size_t size, uint8* data,
+  MOCK_METHOD4(Read, void(int64 position, int 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());
 
   // Sets the TotalBytes & BufferedBytes values to be sent to host() when
   // the set_host() is called.
   void SetTotalAndBufferedBytes(int64 total_bytes, int64 buffered_bytes);
 
@@ skipping 250 matching lines @@
  public:
   MockStatisticsCB();
   ~MockStatisticsCB();
 
   MOCK_METHOD1(OnStatistics, void(const media::PipelineStatistics& statistics));
 };
 
 }  // namespace media
 
 #endif  // MEDIA_BASE_MOCK_FILTERS_H_