Deprecate media_task_runner() from FileSystemTaskRunners

chrome/browser/media_galleries/fileapi/native_media_file_util.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 "chrome/browser/media_galleries/fileapi/native_media_file_util.h"
 
 #include "base/bind.h"
 #include "base/file_util.h"
 #include "base/string_util.h"
 #include "base/task_runner_util.h"
@@ skipping 62 matching lines @@
       (base::strncasecmp(base_name.c_str(),
                          win_vista_recycle_bin_name,
                          strlen(win_vista_recycle_bin_name)) == 0))
     return true;
 #endif
   return false;
 }
 
 // Returns true if the current thread is capable of doing IO.
 bool IsOnTaskRunnerThread(fileapi::FileSystemOperationContext* context) {
-  return context->file_system_context()->task_runners()->
-      media_task_runner()->RunsTasksOnCurrentThread();
+  return context->task_runner()->RunsTasksOnCurrentThread();
 }
 
 MediaPathFilter* GetMediaPathFilter(
     fileapi::FileSystemOperationContext* context) {
   return context->GetUserValue<MediaPathFilter*>(
           MediaFileSystemMountPointProvider::kMediaPathFilterKey);
 }
 
 }  // namespace
 
@@ skipping 545 matching lines @@
                              &file_ref);
   if (callback.is_null())
     return;
   content::BrowserThread::PostTask(
       content::BrowserThread::IO,
       FROM_HERE,
       base::Bind(callback, error, file_info, platform_path, file_ref));
 }
 
 }  // namespace chrome