Removing DataSource from Filter hierarchy

media/filters/file_data_source.cc

 // Copyright (c) 2011 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 31 matching lines @@
   }
   if (!file_) {
     file_size_ = 0;
     return PIPELINE_ERROR_URL_NOT_FOUND;
   }
   UpdateHostBytes();
 
   return PIPELINE_OK;
 }
 
-void FileDataSource::set_host(FilterHost* filter_host) {
-  DataSource::set_host(filter_host);
+void FileDataSource::set_host(DataSourceHost* host) {
+  DataSource::set_host(host);
   UpdateHostBytes();
 }
 
 void FileDataSource::UpdateHostBytes() {
   if (host() && file_) {
     host()->SetTotalBytes(file_size_);
     host()->SetBufferedBytes(file_size_);
   }
 }
 
@@ skipping 48 matching lines @@
   return false;
 }
 
 void FileDataSource::SetPreload(Preload preload) {
 }
 
 void FileDataSource::SetBitrate(int bitrate) {
 }
 
 }  // namespace media