Replace size_t with int in a few media classes.

media/base/data_buffer.cc

 // 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.
 
 #include "base/logging.h"
 #include "media/base/data_buffer.h"
 #include "media/base/decrypt_config.h"
 #if !defined(OS_ANDROID)
 #include "media/ffmpeg/ffmpeg_common.h"
 #endif
 
 namespace media {
 
-DataBuffer::DataBuffer(scoped_array<uint8> buffer, size_t buffer_size)
+DataBuffer::DataBuffer(scoped_array<uint8> buffer, int buffer_size)
     : Buffer(base::TimeDelta(), base::TimeDelta()),
       data_(buffer.Pass()),
       buffer_size_(buffer_size),
       data_size_(buffer_size) {
 }
 
-DataBuffer::DataBuffer(size_t buffer_size)
+DataBuffer::DataBuffer(int buffer_size)
     : Buffer(base::TimeDelta(), base::TimeDelta()),
       data_(new uint8[buffer_size]),
       buffer_size_(buffer_size),
       data_size_(0) {
   CHECK(data_.get()) << "DataBuffer ctor failed to allocate memory";
 
   // Prevent arbitrary pointers.
   if (buffer_size == 0)
     data_.reset(NULL);
 }
 
 DataBuffer::~DataBuffer() {}
 
 scoped_refptr<DataBuffer> DataBuffer::CopyFrom(const uint8* data,
-                                               size_t data_size) {
-  size_t padding_size = 0;
+                                               int data_size) {
+  int padding_size = 0;
 #if !defined(OS_ANDROID)
   // Why FF_INPUT_BUFFER_PADDING_SIZE? FFmpeg assumes all input buffers are
   // padded with this value.
   padding_size = FF_INPUT_BUFFER_PADDING_SIZE;
 #endif
 
   scoped_refptr<DataBuffer> data_buffer(
       new DataBuffer(data_size + padding_size));
   memcpy(data_buffer->data_.get(), data, data_size);
   memset(data_buffer->data_.get() + data_size, 0, padding_size);
   data_buffer->SetDataSize(data_size);
   return data_buffer;
 }
 
 const uint8* DataBuffer::GetData() const {
   return data_.get();
 }
 
-size_t DataBuffer::GetDataSize() const {
+int DataBuffer::GetDataSize() const {
   return data_size_;
 }
 
 const DecryptConfig* DataBuffer::GetDecryptConfig() const {
   return decrypt_config_.get();
 }
 
 uint8* DataBuffer::GetWritableData() {
   return data_.get();
 }
 
 
-void DataBuffer::SetDataSize(size_t data_size) {
+void DataBuffer::SetDataSize(int data_size) {
   DCHECK_LE(data_size, buffer_size_);
   data_size_ = data_size;
 }
 
-size_t DataBuffer::GetBufferSize() const {
+int DataBuffer::GetBufferSize() const {
   return buffer_size_;
 }
 
 void DataBuffer::SetDecryptConfig(scoped_ptr<DecryptConfig> decrypt_config) {
   decrypt_config_ = decrypt_config.Pass();
 }
 
 }  // namespace media