Replace size_t with int in a few media classes.

media/base/buffers.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.
 
 // Defines a base class for representing timestamped media data. Every buffer
 // contains a timestamp in microseconds describing the relative position of
 // the buffer within the media stream, and the duration in microseconds for
 // the length of time the buffer will be rendered.
 //
 // Timestamps are derived directly from the encoded media file and are commonly
@@ skipping 33 matching lines @@
 MEDIA_EXPORT extern inline base::TimeDelta kInfiniteDuration() {
   return base::TimeDelta::FromMicroseconds(kint64max);
 }
 
 class MEDIA_EXPORT Buffer : public base::RefCountedThreadSafe<Buffer> {
  public:
   // Returns a read only pointer to the buffer data.
   virtual const uint8* GetData() const = 0;
 
   // Returns the size of valid data in bytes.
-  virtual size_t GetDataSize() const = 0;
+  virtual int GetDataSize() const = 0;
 
   // If there's no data in this buffer, it represents end of stream.
   bool IsEndOfStream() const;
 
   // Return DecryptConfig if buffer is encrypted, or NULL otherwise.
   virtual const DecryptConfig* GetDecryptConfig() const;
 
   base::TimeDelta GetTimestamp() const {
     return timestamp_;
   }
@@ skipping 16 matching lines @@
  private:
   base::TimeDelta timestamp_;
   base::TimeDelta duration_;
 
   DISALLOW_COPY_AND_ASSIGN(Buffer);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_BASE_BUFFERS_H_