Revert "Remove OwnPtr from Blink."

third_party/WebKit/Source/wtf/OwnPtrCommon.h

 /*
  * Copyright (C) 2009 Apple Inc. All rights reserved.
+ * Copyright (C) 2009 Torch Mobile, Inc.
+ * Copyright (C) 2010 Company 100 Inc.
+ * Copyright (C) 2013 Intel Corporation. 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
  *    documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef PageTransitionEvent_h
-#define PageTransitionEvent_h
+#ifndef WTF_OwnPtrCommon_h
+#define WTF_OwnPtrCommon_h
 
-#include "core/events/Event.h"
-#include "core/events/PageTransitionEventInit.h"
+#include "wtf/Assertions.h"
+#include "wtf/TypeTraits.h"
 
-namespace blink {
+namespace WTF {
 
-class PageTransitionEvent final : public Event {
-    DEFINE_WRAPPERTYPEINFO();
-public:
-    static PageTransitionEvent* create()
-    {
-        return new PageTransitionEvent;
-    }
-    static PageTransitionEvent* create(const AtomicString& type, bool persisted)
-    {
-        return new PageTransitionEvent(type, persisted);
-    }
-    static PageTransitionEvent* create(const AtomicString& type, const PageTransitionEventInit& initializer)
-    {
-        return new PageTransitionEvent(type, initializer);
-    }
+class RefCountedBase;
+class ThreadSafeRefCountedBase;
 
-    ~PageTransitionEvent() override;
-
-    const AtomicString& interfaceName() const override;
-
-    bool persisted() const { return m_persisted; }
-
-    DECLARE_VIRTUAL_TRACE();
-
-private:
-    PageTransitionEvent();
-    PageTransitionEvent(const AtomicString& type, bool persisted);
-    PageTransitionEvent(const AtomicString&, const PageTransitionEventInit&);
-
-    bool m_persisted;
+template<typename T>
+struct IsRefCounted {
+    STATIC_ONLY(IsRefCounted);
+    static const bool value = IsSubclass<T, RefCountedBase>::value
+        || IsSubclass<T, ThreadSafeRefCountedBase>::value;
 };
 
-} // namespace blink
+template <typename T>
+struct OwnedPtrDeleter {
+    STATIC_ONLY(OwnedPtrDeleter);
+    static void deletePtr(T* ptr)
+    {
+        static_assert(!IsRefCounted<T>::value, "use RefPtr for RefCounted objects");
+        static_assert(sizeof(T) > 0, "type must be complete");
+        delete ptr;
+    }
+};
 
-#endif // PageTransitionEvent_h
+template <typename T>
+struct OwnedPtrDeleter<T[]> {
+    STATIC_ONLY(OwnedPtrDeleter);
+    static void deletePtr(T* ptr)
+    {
+        static_assert(!IsRefCounted<T>::value, "use RefPtr for RefCounted objects");
+        static_assert(sizeof(T) > 0, "type must be complete");
+        delete[] ptr;
+    }
+};
+
+template <class T, int n>
+struct OwnedPtrDeleter<T[n]> {
+    STATIC_ONLY(OwnedPtrDeleter);
+    static_assert(sizeof(T) < 0, "do not use array with size as type");
+};
+
+} // namespace WTF
+
+#endif // WTF_OwnPtrCommon_h