Move EXPECT_DCHECK_DEATH from base/task_scheduler and use it in relevant base/ tests

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 537 matching lines @@
         'synchronization/waitable_event_watcher_unittest.cc',
         'sys_byteorder_unittest.cc',
         'sys_info_unittest.cc',
         'system_monitor/system_monitor_unittest.cc',
         'task/cancelable_task_tracker_unittest.cc',
         'task_runner_util_unittest.cc',
         'task_scheduler/delayed_task_manager_unittest.cc',
         'task_scheduler/priority_queue_unittest.cc',
         'task_scheduler/scheduler_lock_unittest.cc',
         'task_scheduler/scheduler_service_thread_unittest.cc',
-        'task_scheduler/scheduler_worker_unittest.cc',
         'task_scheduler/scheduler_worker_pool_impl_unittest.cc',
         'task_scheduler/scheduler_worker_stack_unittest.cc',
+        'task_scheduler/scheduler_worker_unittest.cc',
         'task_scheduler/sequence_sort_key_unittest.cc',
         'task_scheduler/sequence_unittest.cc',
         'task_scheduler/task_scheduler_impl_unittest.cc',
         'task_scheduler/task_tracker_unittest.cc',
         'task_scheduler/test_task_factory.cc',
         'task_scheduler/test_task_factory.h',
-        'task_scheduler/test_utils.h',
         'template_util_unittest.cc',
         'test/histogram_tester_unittest.cc',
         'test/test_pending_task_unittest.cc',
         'test/test_reg_util_win_unittest.cc',
         'test/trace_event_analyzer_unittest.cc',
         'test/user_action_tester_unittest.cc',
         'threading/non_thread_safe_unittest.cc',
         'threading/platform_thread_unittest.cc',
         'threading/post_task_and_reply_impl_unittest.cc',
+        'threading/sequenced_task_runner_handle_unittest.cc',
         'threading/sequenced_worker_pool_unittest.cc',
-        'threading/sequenced_task_runner_handle_unittest.cc',
         'threading/simple_thread_unittest.cc',
         'threading/thread_checker_unittest.cc',
         'threading/thread_collision_warner_unittest.cc',
         'threading/thread_id_name_manager_unittest.cc',
         'threading/thread_local_storage_unittest.cc',
         'threading/thread_local_unittest.cc',
         'threading/thread_unittest.cc',
         'threading/watchdog_unittest.cc',
         'threading/worker_pool_posix_unittest.cc',
         'threading/worker_pool_unittest.cc',
@@ skipping 1207 matching lines @@
                 ['include', 'mac/bind_objc_block_unittest_arc\\.mm$'],
                 ['include', 'mac/scoped_nsobject_unittest_arc\\.mm$'],
               ],
             }]
           ],
         },
       ],
     }],
   ],
 }