Move PostTaskAndReplyWithStatus into task_runner_helpers.h

base/base.gyp

 # 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.
 
 {
   'variables': {
     'chromium_code': 1,
   },
   'includes': [
     '../build/win_precompile.gypi',
@@ skipping 240 matching lines @@
         'stringprintf_unittest.cc',
         'synchronization/cancellation_flag_unittest.cc',
         'synchronization/condition_variable_unittest.cc',
         'synchronization/lock_unittest.cc',
         'synchronization/waitable_event_unittest.cc',
         'synchronization/waitable_event_watcher_unittest.cc',
         'sys_info_unittest.cc',
         'sys_string_conversions_mac_unittest.mm',
         'sys_string_conversions_unittest.cc',
         'system_monitor/system_monitor_unittest.cc',
+        'task_runner_unittest.cc',
         'template_util_unittest.cc',
         'test/trace_event_analyzer_unittest.cc',
         'threading/non_thread_safe_unittest.cc',
         'threading/platform_thread_unittest.cc',
         'threading/sequenced_worker_pool_unittest.cc',
         'threading/simple_thread_unittest.cc',
         'threading/thread_checker_unittest.cc',
         'threading/thread_collision_warner_unittest.cc',
         'threading/thread_local_storage_unittest.cc',
         'threading/thread_local_unittest.cc',
@@ skipping 378 matching lines @@
              # treated as weak imports in dependents, who still must
              # #include closure_blocks_leopard_compat.h to get weak imports.
              'type': 'none',
            }],
          ],
        },
      ],
    }],
   ],
 }