gdata: Move task related functions like RunTaskOnUIThread from gdata_file_system.cc to task_util.cc

chrome/chrome_browser.gypi

 # 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.
 
 {
   'targets': [
     {
       'target_name': 'browser',
       'type': 'static_library',
@@ skipping 596 matching lines @@
         'browser/chromeos/gdata/gdata_util.cc',
         'browser/chromeos/gdata/gdata_util.h',
         'browser/chromeos/gdata/gdata_wapi_feed_loader.cc',
         'browser/chromeos/gdata/gdata_wapi_feed_loader.h',
         'browser/chromeos/gdata/gdata_wapi_feed_processor.cc',
         'browser/chromeos/gdata/gdata_wapi_feed_processor.h',
         'browser/chromeos/gdata/gdata_wapi_parser.cc',
         'browser/chromeos/gdata/gdata_wapi_parser.h',
         'browser/chromeos/gdata/operations_base.cc',
         'browser/chromeos/gdata/operations_base.h',
+        'browser/chromeos/gdata/task_util.cc',
+        'browser/chromeos/gdata/task_util.h',
         'browser/chromeos/gview_request_interceptor.cc',
         'browser/chromeos/gview_request_interceptor.h',
         'browser/chromeos/imageburner/burn_controller.cc',
         'browser/chromeos/imageburner/burn_controller.h',
         'browser/chromeos/imageburner/burn_manager.cc',
         'browser/chromeos/imageburner/burn_manager.h',
         'browser/chromeos/input_method/browser_state_monitor.cc',
         'browser/chromeos/input_method/browser_state_monitor.h',
         'browser/chromeos/input_method/candidate_window.cc',
         'browser/chromeos/input_method/candidate_window.h',
@@ skipping 4978 matching lines @@
           'includes': [ '../build/jni_generator.gypi' ],
           'dependencies': [
             'android_jar_jni_headers',
           ],
         },
       ],
      },
     ],
   ],
 }