Remove use of WebTaskRunner::Task and SameThreadTask from Microtask

third_party/WebKit/Source/bindings/core/v8/Microtask.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 27 matching lines @@
 
 void Microtask::performCheckpoint(v8::Isolate* isolate)
 {
     if (ScriptForbiddenScope::isScriptForbidden())
         return;
     v8::MicrotasksScope::PerformCheckpoint(isolate);
 }
 
 static void microtaskFunctionCallback(void* data)
 {
-    OwnPtr<WebTaskRunner::Task> task = adoptPtr(static_cast<WebTaskRunner::Task*>(data));
-    task->run();
-}
-
-void Microtask::enqueueMicrotask(std::unique_ptr<WebTaskRunner::Task> callback)
-{
-    v8::Isolate* isolate = v8::Isolate::GetCurrent();
-    isolate->EnqueueMicrotask(&microtaskFunctionCallback, callback.release());
+    std::unique_ptr<SameThreadClosure> task = wrapUnique(static_cast<SameThreadClosure*>(data));
+    (*task)();
 }
 
 void Microtask::enqueueMicrotask(std::unique_ptr<SameThreadClosure> callback)
 {
-    enqueueMicrotask(wrapUnique(new SameThreadTask(std::move(callback))));
+    v8::Isolate* isolate = v8::Isolate::GetCurrent();
+    isolate->EnqueueMicrotask(&microtaskFunctionCallback, static_cast<void*>(callback.release()));
 }
 
 } // namespace blink