Make new TaskRunner, SequencedTaskRunner, and SingleThreadTaskRunner interfaces

base/base.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.
 
 {
   'target_defaults': {
     'variables': {
       'base_target': 0,
     },
     'target_conditions': [
@@ skipping 169 matching lines @@
           'memory/scoped_nsobject.h',
           'memory/scoped_open_process.h',
           'memory/scoped_ptr.h',
           'memory/scoped_vector.h',
           'memory/singleton.cc',
           'memory/singleton.h',
           'memory/weak_ptr.cc',
           'memory/weak_ptr.h',
           'message_loop.cc',
           'message_loop.h',
+          'message_loop_helpers.h',
           'message_loop_proxy.cc',
           'message_loop_proxy.h',
           'message_loop_proxy_impl.cc',
           'message_loop_proxy_impl.h',
           'message_pump.cc',
           'message_pump.h',
           'message_pump_default.cc',
           'message_pump_default.h',
           'message_pump_win.cc',
           'message_pump_win.h',
@@ skipping 45 matching lines @@
           'rand_util.h',
           'rand_util_c.h',
           'rand_util_posix.cc',
           'rand_util_win.cc',
           'safe_strerror_posix.cc',
           'safe_strerror_posix.h',
           'scoped_native_library.cc',
           'scoped_native_library.h',
           'scoped_temp_dir.cc',
           'scoped_temp_dir.h',
+          'sequenced_task_runner.cc',
+          'sequenced_task_runner.h',
+          'sequenced_task_runner_helpers.h',
           'sha1.h',
           'sha1_portable.cc',
           'sha1_win.cc',
           'shared_memory.h',
           'shared_memory_android.cc',
           'shared_memory_posix.cc',
           'shared_memory_win.cc',
+          'single_thread_task_runner.h',
           'spin_wait.h',
           'stack_container.h',
           'stl_util.h',
           'string_number_conversions.cc',
           'string_number_conversions.h',
           'string_piece.cc',
           'string_piece.h',
           'string_split.cc',
           'string_split.h',
           'string_tokenizer.h',
@@ skipping 32 matching lines @@
           'sys_info_freebsd.cc',
           'sys_info_linux.cc',
           'sys_info_mac.cc',
           'sys_info_openbsd.cc',
           'sys_info_posix.cc',
           'sys_info_win.cc',
           'sys_string_conversions.h',
           'sys_string_conversions_mac.mm',
           'sys_string_conversions_posix.cc',
           'sys_string_conversions_win.cc',
+          'task_runner.cc',
+          'task_runner.h',
           'template_util.h',
           'threading/non_thread_safe.h',
           'threading/non_thread_safe_impl.cc',
           'threading/non_thread_safe_impl.h',
           'threading/platform_thread.h',
           'threading/platform_thread_mac.mm',
           'threading/platform_thread_posix.cc',
           'threading/platform_thread_win.cc',
           'threading/post_task_and_reply_impl.cc',
           'threading/post_task_and_reply_impl.h',
@@ skipping 563 matching lines @@
             'third_party/xdg_mime/xdgmimemagic.c',
             'third_party/xdg_mime/xdgmimemagic.h',
             'third_party/xdg_mime/xdgmimeparent.c',
             'third_party/xdg_mime/xdgmimeparent.h',
           ],
         },
       ],
     }],
   ],
 }