Fix memory leak with ScriptedIdleTaskController

third_party/WebKit/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/IdleDeadline.h"
 #include "core/dom/SuspendableObject.h"
 #include "platform/Timer.h"
 #include "platform/heap/Handle.h"
 #include "wtf/Vector.h"
+#include "wtf/WeakPtr.h"
 
 namespace blink {
 
 class ExecutionContext;
 class IdleRequestCallback;
 class IdleRequestOptions;
 
 class ScriptedIdleTaskController
     : public GarbageCollectedFinalized<ScriptedIdleTaskController>,
       public SuspendableObject {
@@ skipping 33 matching lines @@
   }
 
   void runCallback(CallbackId,
                    double deadlineSeconds,
                    IdleDeadline::CallbackType);
 
   WebScheduler* m_scheduler;  // Not owned.
   HeapHashMap<CallbackId, Member<IdleRequestCallback>> m_callbacks;
   Vector<CallbackId> m_pendingTimeouts;
   CallbackId m_nextCallbackId;
+  WTF::WeakPtrFactory<ScriptedIdleTaskController> m_weakPtrFactory;
   bool m_suspended;
 };
 
 }  // namespace blink
 
 #endif  // ScriptedIdleTaskController_h