Add a WorkerScheduler and a WebThreadImplForWorker

content/child/scheduler/worker_scheduler.cc

-// Copyright 2014 The Chromium Authors. All rights reserved.
+// Copyright 2015 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 "content/renderer/scheduler/renderer_scheduler.h"
+#include "content/child/scheduler/worker_scheduler.h"
 
 #include "base/command_line.h"
 #include "base/message_loop/message_loop.h"
+#include "content/child/scheduler/null_worker_scheduler.h"
 #include "content/child/scheduler/scheduler_message_loop_delegate.h"
+#include "content/child/scheduler/worker_scheduler_impl.h"
 #include "content/public/common/content_switches.h"
-#include "content/renderer/scheduler/null_renderer_scheduler.h"
-#include "content/renderer/scheduler/renderer_scheduler_impl.h"
 
 namespace content {
 
-RendererScheduler::RendererScheduler() {
+WorkerScheduler::WorkerScheduler() {
 }
 
-RendererScheduler::~RendererScheduler() {
+WorkerScheduler::~WorkerScheduler() {
 }
 
 // static
-scoped_ptr<RendererScheduler> RendererScheduler::Create() {
+scoped_ptr<WorkerScheduler> WorkerScheduler::Create(
+    base::MessageLoop* message_loop) {
   base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
   if (command_line->HasSwitch(switches::kDisableBlinkScheduler)) {
-    return make_scoped_ptr(new NullRendererScheduler());
+    return make_scoped_ptr(new NullWorkerScheduler());
   } else {
-    base::MessageLoop* message_loop = base::MessageLoop::current();
-    return make_scoped_ptr(new RendererSchedulerImpl(
+    return make_scoped_ptr(new WorkerSchedulerImpl(
         SchedulerMessageLoopDelegate::Create(message_loop)));
   }
 }
 
 }  // namespace content