Oilpan: fix build after r200992.

Source/core/dom/ScriptedIdleTaskController.h

 // Copyright 2015 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 ScriptedIdleTaskController_h
 #define ScriptedIdleTaskController_h
 
 #include "core/dom/ActiveDOMObject.h"
 #include "core/dom/IdleCallbackDeadline.h"
 #include "platform/Timer.h"
 #include "platform/heap/Handle.h"
 #include "wtf/RefCounted.h"
 #include "wtf/RefPtr.h"
 #include "wtf/Vector.h"
 
 namespace blink {
 
 class ExecutionContext;
 class IdleRequestCallback;
 class DocumentLoadTiming;
 
-class ScriptedIdleTaskController : public RefCountedWillBeGarbageCollected<ScriptedIdleTaskController>, public ActiveDOMObject {
-    DECLARE_EMPTY_DESTRUCTOR_WILL_BE_REMOVED(ScriptedIdleTaskController);
+class ScriptedIdleTaskController : public RefCountedWillBeGarbageCollectedFinalized<ScriptedIdleTaskController>, public ActiveDOMObject {
+    WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(ScriptedIdleTaskController);
 public:
     static PassRefPtrWillBeRawPtr<ScriptedIdleTaskController> create(ExecutionContext* context, const DocumentLoadTiming& timing)
     {
         return adoptRefWillBeNoop(new ScriptedIdleTaskController(context, timing));
     }
+    ~ScriptedIdleTaskController();
+
     DECLARE_TRACE();
 
     using CallbackId = int;
 
     int registerCallback(IdleRequestCallback*, double timeoutMillis);
     void cancelCallback(CallbackId);
 
     // ActiveDOMObject interface.
     void stop() override;
     void suspend() override;
     void resume() override;
     bool hasPendingActivity() const override;
 
     void callbackFired(CallbackId, double deadlineSeconds, IdleCallbackDeadline::CallbackType);
 
 private:
     ScriptedIdleTaskController(ExecutionContext*, const DocumentLoadTiming&);
 
     void runCallback(CallbackId, double deadlineMillis, IdleCallbackDeadline::CallbackType);
 
     const DocumentLoadTiming& m_timing;

[sof, 2015/08/22 05:39:49]

This const reference to a part object (of a DocumentLoader) -- same for
IdleCallbackDeadline -- was left as-is, but is something that needs to be
addressed eventually.

     WebScheduler* m_scheduler; // Not owned.
     PersistentHeapHashMapWillBeHeapHashMap<CallbackId, Member<IdleRequestCallback>> m_callbacks;
     Vector<CallbackId> m_pendingTimeouts;
     CallbackId m_nextCallbackId;
     bool m_suspended;
 };
 
 } // namespace blink
 
 #endif // ScriptedIdleTaskController_h