Revert "Remove OwnPtr from Blink."

third_party/WebKit/Source/core/loader/NavigationScheduler.h

 /*
  * Copyright (C) 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2009 Adam Barth. 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
@@ skipping 19 matching lines @@
 
 #ifndef NavigationScheduler_h
 #define NavigationScheduler_h
 
 #include "core/CoreExport.h"
 #include "platform/heap/Handle.h"
 #include "public/platform/WebScheduler.h"
 #include "wtf/Forward.h"
 #include "wtf/HashMap.h"
 #include "wtf/Noncopyable.h"
+#include "wtf/OwnPtr.h"
+#include "wtf/PassOwnPtr.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/text/WTFString.h"
-#include <memory>
 
 namespace blink {
 
 class CancellableTaskFactory;
 class Document;
 class FormSubmission;
 class LocalFrame;
 class ScheduledNavigation;
 
 class CORE_EXPORT NavigationScheduler final : public GarbageCollectedFinalized<NavigationScheduler> {
@@ skipping 25 matching lines @@
 
     bool shouldScheduleReload() const;
     bool shouldScheduleNavigation(const String& url) const;
 
     void navigateTask();
     void schedule(ScheduledNavigation*);
 
     static bool mustReplaceCurrentItem(LocalFrame* targetFrame);
 
     Member<LocalFrame> m_frame;
-    std::unique_ptr<CancellableTaskFactory> m_navigateTaskFactory;
+    OwnPtr<CancellableTaskFactory> m_navigateTaskFactory;
     Member<ScheduledNavigation> m_redirect;
     WebScheduler::NavigatingFrameType m_frameType; // Exists because we can't deref m_frame in destructor.
 };
 
 class NavigationDisablerForBeforeUnload {
     WTF_MAKE_NONCOPYABLE(NavigationDisablerForBeforeUnload);
     STACK_ALLOCATED();
 public:
     NavigationDisablerForBeforeUnload()
     {
@@ skipping 25 matching lines @@
     }
     static bool inUnloadHandler() { return !!s_inUnloadHandler; }
 
 private:
     static unsigned s_inUnloadHandler;
 };
 
 } // namespace blink
 
 #endif // NavigationScheduler_h