[SyncFS] Add TaskLogger and wire up it.

chrome/chrome_browser.gypi

 # Copyright 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',
       'variables': { 'enable_wexit_time_destructors': 1, },
@@ skipping 2420 matching lines @@
         'browser/sync_file_system/sync_file_type.h',
         'browser/sync_file_system/sync_operation_type.cc',
         'browser/sync_file_system/sync_operation_type.h',
         'browser/sync_file_system/sync_process_runner.cc',
         'browser/sync_file_system/sync_process_runner.h',
         'browser/sync_file_system/sync_service_state.h',
         'browser/sync_file_system/sync_status_code.cc',
         'browser/sync_file_system/sync_status_code.h',
         'browser/sync_file_system/syncable_file_system_util.cc',
         'browser/sync_file_system/syncable_file_system_util.h',
+        'browser/sync_file_system/task_logger.cc',
+        'browser/sync_file_system/task_logger.h',
         'browser/tab_contents/background_contents.cc',
         'browser/tab_contents/background_contents.h',
         'browser/tab_contents/navigation_metrics_recorder.cc',
         'browser/tab_contents/navigation_metrics_recorder.h',
         'browser/tab_contents/retargeting_details.h',
         'browser/tab_contents/tab_util.cc',
         'browser/tab_contents/tab_util.h',
         'browser/task_manager/background_information.cc',
         'browser/task_manager/background_information.h',
         'browser/task_manager/browser_process_resource_provider.cc',
@@ skipping 1287 matching lines @@
             'package_name': 'org/chromium/chrome/browser',
             'template_deps': ['browser/android/tab_load_status.h'],
           },
           'includes': [ '../build/android/java_cpp_template.gypi' ],
         },
       ],
      },
     ],
   ],
 }