Wire FileSystemOperation::TouchFile to Drive.

webkit/chromeos/fileapi/remote_file_system_operation.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 "webkit/chromeos/fileapi/remote_file_system_operation.h"
 
 #include "base/bind.h"
 #include "base/utf_string_conversions.h"
 #include "base/platform_file.h"
 #include "base/values.h"
@@ skipping 159 matching lines @@
     // been cancelled, report it, and report that the cancel has succeeded.
     DCHECK(cancel_callback_.is_null());
     cancel_callback_ = cancel_callback;
   }
 }
 
 void RemoteFileSystemOperation::TouchFile(const FileSystemURL& url,
                                           const base::Time& last_access_time,
                                           const base::Time& last_modified_time,
                                           const StatusCallback& callback) {
-  NOTIMPLEMENTED();
+  DCHECK(SetPendingOperationType(kOperationTouchFile));
+  remote_proxy_->TouchFile(
+      url,
+      last_access_time,
+      last_modified_time,
+      base::Bind(&RemoteFileSystemOperation::DidFinishFileOperation,
+                 base::Owned(this), callback));
 }
 
 void RemoteFileSystemOperation::OpenFile(const FileSystemURL& url,
                                          int file_flags,
                                          base::ProcessHandle peer_handle,
                                          const OpenFileCallback& callback) {
   DCHECK(SetPendingOperationType(kOperationOpenFile));
   remote_proxy_->OpenFile(
       url,
       file_flags,
@@ skipping 117 matching lines @@
 
 void RemoteFileSystemOperation::DidOpenFile(
     const OpenFileCallback& callback,
     base::PlatformFileError result,
     base::PlatformFile file,
     base::ProcessHandle peer_handle) {
   callback.Run(result, file, peer_handle);
 }
 
 }  // namespace chromeos