Rename ChildScheduler to WebThreadScheduler.

Scheduler classes are being renamed as part of scheduler
architecture refactoring.

Bug: 826203
Change-Id: I1f59849cdb83bbc861cc3110b87d4f0bec901761
Reviewed-on: https://chromium-review.googlesource.com/989528Reviewed-by: Kentaro Hara <haraken@chromium.org>
Reviewed-by: Alexander Timin <altimin@chromium.org>
Commit-Queue: Yuta Kitamura <yutak@chromium.org>
Cr-Commit-Position: refs/heads/master@{#547756}

third_party/WebKit/Source/platform/scheduler/child/web_scheduler_impl.cc

@@ -17,10 +17,10 @@ namespace scheduler {
 
 // TODO(kraynov): Ditch kDeprecatedNone here.
 WebSchedulerImpl::WebSchedulerImpl(
-    ChildScheduler* child_scheduler,
+    WebThreadScheduler* thread_scheduler,
     scoped_refptr<SingleThreadIdleTaskRunner> idle_task_runner,
     scoped_refptr<TaskQueue> v8_task_runner)
-    : child_scheduler_(child_scheduler),
+    : thread_scheduler_(thread_scheduler),
       idle_task_runner_(idle_task_runner),
       v8_task_runner_(TaskRunnerImpl::Create(std::move(v8_task_runner),
                                              TaskType::kDeprecatedNone)) {}
@@ -28,15 +28,15 @@ WebSchedulerImpl::WebSchedulerImpl(
 WebSchedulerImpl::~WebSchedulerImpl() = default;
 
 void WebSchedulerImpl::Shutdown() {
-  child_scheduler_->Shutdown();
+  thread_scheduler_->Shutdown();
 }
 
 bool WebSchedulerImpl::ShouldYieldForHighPriorityWork() {
-  return child_scheduler_->ShouldYieldForHighPriorityWork();
+  return thread_scheduler_->ShouldYieldForHighPriorityWork();
 }
 
 bool WebSchedulerImpl::CanExceedIdleDeadlineIfRequired() {
-  return child_scheduler_->CanExceedIdleDeadlineIfRequired();
+  return thread_scheduler_->CanExceedIdleDeadlineIfRequired();
 }
 
 void WebSchedulerImpl::RunIdleTask(blink::WebThread::IdleTask task,

third_party/WebKit/Source/platform/scheduler/child/web_scheduler_impl.h

@@ -18,13 +18,13 @@
 namespace blink {
 namespace scheduler {
 
-class ChildScheduler;
 class SingleThreadIdleTaskRunner;
 class TaskRunnerImpl;
+class WebThreadScheduler;
 
 class PLATFORM_EXPORT WebSchedulerImpl : public WebScheduler {
  public:
-  WebSchedulerImpl(ChildScheduler* child_scheduler,
+  WebSchedulerImpl(WebThreadScheduler* thread_scheduler,
                    scoped_refptr<SingleThreadIdleTaskRunner> idle_task_runner,
                    scoped_refptr<TaskQueue> v8_task_runner);
   ~WebSchedulerImpl() override;
@@ -54,7 +54,7 @@ class PLATFORM_EXPORT WebSchedulerImpl : public WebScheduler {
  private:
   static void RunIdleTask(WebThread::IdleTask task, base::TimeTicks deadline);
 
-  ChildScheduler* child_scheduler_;  // NOT OWNED
+  WebThreadScheduler* thread_scheduler_;  // NOT OWNED
   scoped_refptr<SingleThreadIdleTaskRunner> idle_task_runner_;
   scoped_refptr<TaskRunnerImpl> v8_task_runner_;
 

third_party/WebKit/Source/platform/scheduler/public/non_main_thread_scheduler.h

@@ -22,7 +22,7 @@ namespace scheduler {
 class WorkerSchedulerProxy;
 
 // TODO(yutak): Rename this class to NonMainThreadScheduler.
-class PLATFORM_EXPORT WorkerScheduler : public ChildScheduler {
+class PLATFORM_EXPORT WorkerScheduler : public WebThreadScheduler {
  public:
   ~WorkerScheduler() override;
 

third_party/WebKit/public/platform/scheduler/web_main_thread_scheduler.h

@@ -44,7 +44,7 @@ enum class RendererProcessType;
 class RenderWidgetSchedulingState;
 
 // TODO(yutak): Rename this class to WebMainThreadScheduler.
-class BLINK_PLATFORM_EXPORT RendererScheduler : public ChildScheduler {
+class BLINK_PLATFORM_EXPORT RendererScheduler : public WebThreadScheduler {
  public:
   class BLINK_PLATFORM_EXPORT RAILModeObserver {
    public:

third_party/WebKit/public/platform/scheduler/web_thread_scheduler.h

@@ -18,10 +18,9 @@ class MessageLoop;
 namespace blink {
 namespace scheduler {
 
-// TODO(yutak): Rename this class to WebThreadScheduler.
-class BLINK_PLATFORM_EXPORT ChildScheduler {
+class BLINK_PLATFORM_EXPORT WebThreadScheduler {
  public:
-  virtual ~ChildScheduler() = default;
+  virtual ~WebThreadScheduler() = default;
 
   // Returns the default task runner.
   virtual scoped_refptr<base::SingleThreadTaskRunner> DefaultTaskRunner() = 0;
@@ -64,8 +63,8 @@ class BLINK_PLATFORM_EXPORT ChildScheduler {
   virtual void Shutdown() = 0;
 
  protected:
-  ChildScheduler() = default;
-  DISALLOW_COPY_AND_ASSIGN(ChildScheduler);
+  WebThreadScheduler() = default;
+  DISALLOW_COPY_AND_ASSIGN(WebThreadScheduler);
 };
 
 }  // namespace scheduler