Remove TaskRunnerHelper::Get except for WorkerThread

This is one step of all replacings at https://chromium-review.googlesource.com/c/chromium/src/+/743663

Bug: 777775
Change-Id: Ib388098d7a6f3d1baa3b144734f470b0263f74f7
Reviewed-on: https://chromium-review.googlesource.com/748741Reviewed-by: Kentaro Hara <haraken@chromium.org>
Commit-Queue: Hajime Hoshi <hajimehoshi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#513078}

third_party/WebKit/Source/core/dom/TaskRunnerHelper.cpp

@@ -4,40 +4,10 @@
 
 #include "core/dom/TaskRunnerHelper.h"
 
-#include "core/dom/Document.h"
-#include "core/dom/ExecutionContext.h"
-#include "core/frame/LocalFrame.h"
-#include "core/workers/WorkerOrWorkletGlobalScope.h"
 #include "core/workers/WorkerThread.h"
-#include "platform/WebFrameScheduler.h"
-#include "platform/WebTaskRunner.h"
-#include "public/platform/Platform.h"
-#include "public/platform/WebThread.h"
 
 namespace blink {
 
-scoped_refptr<WebTaskRunner> TaskRunnerHelper::Get(TaskType type,
-                                                   LocalFrame* frame) {
-  return frame->GetTaskRunner(type);
-}
-
-scoped_refptr<WebTaskRunner> TaskRunnerHelper::Get(TaskType type,
-                                                   Document* document) {
-  return document->GetTaskRunner(type);
-}
-
-scoped_refptr<WebTaskRunner> TaskRunnerHelper::Get(
-    TaskType type,
-    ExecutionContext* execution_context) {
-  return execution_context->GetTaskRunner(type);
-}
-
-scoped_refptr<WebTaskRunner> TaskRunnerHelper::Get(
-    TaskType type,
-    WorkerOrWorkletGlobalScope* global_scope) {
-  return global_scope->GetTaskRunner(type);
-}
-
 scoped_refptr<WebTaskRunner> TaskRunnerHelper::Get(
     TaskType type,
     WorkerThread* worker_thread) {

third_party/WebKit/Source/core/dom/TaskRunnerHelper.h

@@ -12,11 +12,7 @@
 
 namespace blink {
 
-class Document;
-class ExecutionContext;
-class LocalFrame;
 class WebTaskRunner;
-class WorkerOrWorkletGlobalScope;
 class WorkerThread;
 
 // A set of helper functions to get a WebTaskRunner for TaskType and a context
@@ -26,12 +22,6 @@ class CORE_EXPORT TaskRunnerHelper final {
   STATIC_ONLY(TaskRunnerHelper);
 
  public:
-  static scoped_refptr<WebTaskRunner> Get(TaskType, LocalFrame*);
-  static scoped_refptr<WebTaskRunner> Get(TaskType, Document*);
-  static scoped_refptr<WebTaskRunner> Get(TaskType, ExecutionContext*);
-  static scoped_refptr<WebTaskRunner> Get(TaskType,
-                                          WorkerOrWorkletGlobalScope*);
-
   // Returns a WebTaskRunner that is associated to the worker / worklet global
   // scope that corresponds to the given WorkerThread. Note that WorkerThread is
   // a per-global-scope object while the naming might sound differently.