Remove CloseFile from FileSystem.

chrome/browser/chromeos/drive/async_file_util.cc

 // Copyright 2013 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/chromeos/drive/async_file_util.h"
 
 #include "base/callback.h"
 #include "base/files/file_path.h"
 #include "base/logging.h"
 #include "base/platform_file.h"
@@ skipping 32 matching lines @@
                             base::MessageLoopProxy::current(),
                             on_error_callback)));
 }
 
 // Runs CreateOrOpenFile callback based on the given |error| and |file|.
 void RunCreateOrOpenFileCallback(
     const AsyncFileUtil::FileSystemGetter& file_system_getter,
     const base::FilePath& file_path,
     const AsyncFileUtil::CreateOrOpenCallback& callback,
     base::PlatformFileError error,
-    base::PlatformFile file) {
+    base::PlatformFile file,
+    const base::Closure& close_callback_on_ui_thread) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
 
   // It is necessary to make a closure, which runs on file closing here.
   // It will be provided as a FileSystem::OpenFileCallback's argument later.
   // (crbug.com/259184).
   callback.Run(
       error, base::PassPlatformFile(&file),
-      base::Bind(&PostFileSystemCallback,
-                 file_system_getter,
-                 base::Bind(&fileapi_internal::CloseFile, file_path),
-                 base::Closure()));
+      base::Bind(&google_apis::RunTaskOnThread,
+                 BrowserThread::GetMessageLoopProxyForThread(BrowserThread::UI),
+                 close_callback_on_ui_thread));
 }
 
 // Runs CreateOrOpenFile when the error happens.
 void RunCreateOrOpenFileCallbackOnError(
     const AsyncFileUtil::CreateOrOpenCallback& callback,
     base::PlatformFileError error) {
   // Because the |callback| takes PassPlatformFile as its argument, and
   // it is necessary to garantee the pointer passed to PassPlatformFile is
   // alive during the |callback| invocation, here we prepare a thin adapter
   // to have PlatformFile on stack frame.
@@ skipping 347 matching lines @@
                      base::Bind(&RunCreateSnapshotFileCallback, callback))),
       base::Bind(callback,
                  base::PLATFORM_FILE_ERROR_FAILED,
                  base::PlatformFileInfo(),
                  base::FilePath(),
                  scoped_refptr<webkit_blob::ShareableFileReference>()));
 }
 
 }  // namespace internal
 }  // namespace drive