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

base/task_scheduler/scheduler_worker_pool_impl_unittest.cc

 // Copyright 2016 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.
 
 #include "base/task_scheduler/scheduler_worker_pool_impl.h"
 
 #include <stddef.h>
 
 #include <memory>
 #include <unordered_set>
 #include <vector>
 
 #include "base/atomicops.h"
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/callback.h"
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
 #include "base/memory/ref_counted.h"
 #include "base/synchronization/condition_variable.h"
 #include "base/synchronization/lock.h"
 #include "base/synchronization/waitable_event.h"
 #include "base/task_runner.h"
 #include "base/task_scheduler/delayed_task_manager.h"
 #include "base/task_scheduler/scheduler_worker_pool_params.h"
 #include "base/task_scheduler/sequence.h"
 #include "base/task_scheduler/sequence_sort_key.h"
 #include "base/task_scheduler/task_tracker.h"
 #include "base/task_scheduler/test_task_factory.h"
-#include "base/task_scheduler/test_utils.h"
+#include "base/test/gtest_util.h"
 #include "base/threading/platform_thread.h"
 #include "base/threading/simple_thread.h"
 #include "base/threading/thread_checker_impl.h"
 #include "base/threading/thread_local_storage.h"
 #include "base/threading/thread_restrictions.h"
 #include "base/time/time.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace base {
 namespace internal {
@@ skipping 510 matching lines @@
     count_waiter->Wait();
 
   EXPECT_GT(subtle::NoBarrier_Load(&zero_tls_values_), 0);
 
   // Release tasks waiting on |waiter_|.
   waiter_.Signal();
 }
 
 }  // namespace internal
 }  // namespace base