Use the scheduling mechanism provided by the platform

Source/platform/scheduler/TracedTask.h

Index: Source/platform/scheduler/TracedTask.h
diff --git a/Source/platform/scheduler/TracedTask.h b/Source/platform/scheduler/TracedTask.h
deleted file mode 100644
index 1a3296e594281e3993923da8c65b67702af17abf..0000000000000000000000000000000000000000
--- a/Source/platform/scheduler/TracedTask.h
+++ /dev/null
@@ -1,72 +0,0 @@
-// Copyright 2014 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.
-
-#ifndef TracedTask_h
-#define TracedTask_h
-
-#include "platform/Task.h"
-#include "platform/TraceEvent.h"
-#include "platform/TraceLocation.h"
-
-namespace blink {
-namespace internal {
-
-#ifdef MANGLE_COMPILES_ON_WIN_OK
-// TODO: Once win version compiles correctly when using TRACE_ID_MANGLE remove
-// the ifdef to always mangle
-#define MANGLE(id) TRACE_ID_MANGLE(id)
-#else
-#define MANGLE(id) (id)
-#endif
-
-class TracedTask {
-public:
-    virtual void run() const = 0;
-    virtual ~TracedTask();
-
-protected:
-    TracedTask(const TraceLocation&, const char* traceName);
-    TraceLocation getLocation() const;
-    const char* getTraceName() const;
-    void endFlowTraceEvent() const;
-
-private:
-    // Declared volatile as it is atomically incremented.
-    static volatile int s_nextFlowTraceID;
-
-    uint64_t m_flowTraceID;
-    TraceLocation m_location;
-    const char* m_traceName;
-};
-
-class TracedStandardTask : public TracedTask {
-public:
-    typedef Function<void()> Task;
-
-    static PassOwnPtr<TracedStandardTask> Create(const Task&, const TraceLocation&, const char* traceName);
-    virtual void run() const;
-    virtual ~TracedStandardTask();
-
-private:
-    TracedStandardTask(const Task&, const TraceLocation&, const char* traceName);
-    Task m_task;
-};
-
-class TracedIdleTask : public TracedTask {
-public:
-    typedef Function<void(double deadlineSeconds)> IdleTask;
-
-    static PassOwnPtr<TracedIdleTask> Create(const IdleTask&, const TraceLocation&, const char* traceName);
-    virtual void run() const;
-    virtual ~TracedIdleTask();
-
-private:
-    TracedIdleTask(const IdleTask&, const TraceLocation&, const char* traceName);
-    IdleTask m_idleTask;
-};
-
-} // namespace internal
-} // namespace blink
-
-#endif // TracedTask_h