TaskScheduler: Remove base::ExecutionMode.

base/task_scheduler/scheduler_worker.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.h"
 
 #include <stddef.h>
 
 #include <utility>
 
@@ skipping 29 matching lines @@
 
     outer_->delegate_->OnMainEntry(outer_);
 
     // A SchedulerWorker starts out waiting for work.
     WaitForWork();
 
 #if defined(OS_WIN)
     // This is required as SequencedWorkerPool previously blindly CoInitialized
     // all of its threads.
     // TODO: Get rid of this broad COM scope and force tasks that care about a
-    // CoInitialized environment to request one (via an upcoming ExecutionMode).
+    // CoInitialized environment to request one (via an upcoming execution
+    // mode).
     win::ScopedCOMInitializer com_initializer;
 #endif
 
     while (!outer_->task_tracker_->IsShutdownComplete() &&
            !outer_->should_exit_for_testing_.IsSet()) {
       DCHECK(outer_);
 
 #if defined(OS_MACOSX)
       mac::ScopedNSAutoreleasePool autorelease_pool;
 #endif
@@ skipping 214 matching lines @@
   thread_ = Thread::Create(this);
 }
 
 void SchedulerWorker::CreateThreadAssertSynchronized() {
   thread_lock_.AssertAcquired();
   CreateThread();
 }
 
 }  // namespace internal
 }  // namespace base