Introduce WorkerBackingThread

third_party/WebKit/Source/bindings/core/v8/V8IdleTaskRunner.h

 /*
  * Copyright (C) 2015 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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 14 matching lines @@
 
 #ifndef V8IdleTaskRunner_h
 #define V8IdleTaskRunner_h
 
 #include "core/CoreExport.h"
 #include "gin/public/v8_idle_task_runner.h"
 #include "platform/RuntimeEnabledFeatures.h"
 #include "public/platform/Platform.h"
 #include "public/platform/WebScheduler.h"
 #include "public/platform/WebThread.h"
+#include "public/platform/WebTraceLocation.h"

[kinuko, 2016/04/04 16:18:16]

Do we need this change here?

[yhirano, 2016/04/06 01:51:40]

BLINK_FROM_HERE is used in this file. As this file lacks this include directive,
removing an unnecessary including directive in another file leads to a build
failure.

 #include "wtf/OwnPtr.h"
 
 namespace blink {
 
 class V8IdleTaskAdapter : public WebThread::IdleTask {
     USING_FAST_MALLOC(V8IdleTaskAdapter);
     WTF_MAKE_NONCOPYABLE(V8IdleTaskAdapter);
 public:
     V8IdleTaskAdapter(v8::IdleTask* task) : m_task(adoptPtr(task)) { }
     ~V8IdleTaskAdapter() override { }
@@ skipping 17 matching lines @@
         m_scheduler->postIdleTask(BLINK_FROM_HERE, new V8IdleTaskAdapter(task));
     }
 private:
     WebScheduler* m_scheduler;
 };
 
 
 } // namespace blink
 
 #endif // V8Initializer_h