Replace size_t with int in a few media classes.

media/filters/file_data_source.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 <limits>
 
 #include "base/file_util.h"
 #include "base/logging.h"
 #include "base/utf_string_conversions.h"
 #include "media/base/filter_host.h"
@@ skipping 54 matching lines @@
   base::AutoLock l(lock_);
   if (file_) {
     file_util::CloseFile(file_);
     file_ = NULL;
     file_size_ = 0;
   }
   if (!callback.is_null())
     callback.Run();
 }
 
-void FileDataSource::Read(int64 position, size_t size, uint8* data,
+void FileDataSource::Read(int64 position, int size, uint8* data,
                           const DataSource::ReadCB& read_cb) {
   DCHECK(file_);
   base::AutoLock l(lock_);
   if (file_) {
 #if defined(OS_WIN)
     if (_fseeki64(file_, position, SEEK_SET)) {
       read_cb.Run(DataSource::kReadError);
       return;
     }
 #else
     CHECK(position <= std::numeric_limits<int32>::max());
     // TODO(hclam): Change fseek() to support 64-bit position.
     if (fseek(file_, static_cast<int32>(position), SEEK_SET)) {
       read_cb.Run(DataSource::kReadError);
       return;
     }
 #endif
-    size_t size_read = fread(data, 1, size, file_);
+    int size_read = fread(data, 1, size, file_);
     if (size_read == size || !ferror(file_)) {
       read_cb.Run(size_read);
       return;
     }
   }
 
   read_cb.Run(kReadError);
 }
 
 bool FileDataSource::GetSize(int64* size_out) {
   DCHECK(size_out);
   DCHECK(file_);
   base::AutoLock l(lock_);
   *size_out = file_size_;
   return (NULL != file_ && !disable_file_size_);
 }
 
 bool FileDataSource::IsStreaming() {
   return false;
 }
 
 void FileDataSource::SetPreload(Preload preload) {
 }
 
 void FileDataSource::SetBitrate(int bitrate) {
 }
 
 }  // namespace media