Move basic operation components for Drive API to chrome/browser/google_apis directory

chrome/browser/google_apis/task_util.h

 // 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.
 
-#ifndef CHROME_BROWSER_CHROMEOS_GDATA_TASK_UTIL_H_
-#define CHROME_BROWSER_CHROMEOS_GDATA_TASK_UTIL_H_
+#ifndef CHROME_BROWSER_GOOGLE_APIS_TASK_UTIL_H_
+#define CHROME_BROWSER_GOOGLE_APIS_TASK_UTIL_H_
 
 #include "base/bind.h"
 #include "base/message_loop_proxy.h"
 
 namespace gdata {
 
 // Runs task on the thread to which |relay_proxy| belongs.
 void RunTaskOnThread(scoped_refptr<base::MessageLoopProxy> relay_proxy,
                      const base::Closure& task);
 
@@ skipping 94 matching lines @@
 // Returns callback which runs the given |callback| on the current thread.
 template<typename CallbackType>
 CallbackType CreateRelayCallback(const CallbackType& callback) {
   return base::Bind(&internal::RelayCallback<CallbackType>::Run,
                     base::MessageLoopProxy::current(),
                     callback);
 }
 
 }  // namespace gdata
 
-#endif  // CHROME_BROWSER_CHROMEOS_GDATA_TASK_UTIL_H_
+#endif  // CHROME_BROWSER_GOOGLE_APIS_TASK_UTIL_H_