Remove OwnPtr from Blink.

third_party/WebKit/Source/core/page/ContextMenuController.h

Index: third_party/WebKit/Source/core/page/ContextMenuController.h
diff --git a/third_party/WebKit/Source/core/page/ContextMenuController.h b/third_party/WebKit/Source/core/page/ContextMenuController.h
index fadbade7a8bd0b730df801ecbb0e0bcffbb8311a..3f62e0ad9ffab917a4ee76ca2a60489525b686f3 100644
--- a/third_party/WebKit/Source/core/page/ContextMenuController.h
+++ b/third_party/WebKit/Source/core/page/ContextMenuController.h
@@ -30,9 +30,9 @@
 #include "core/layout/HitTestResult.h"
 #include "platform/heap/Handle.h"
 #include "wtf/Noncopyable.h"
-#include "wtf/OwnPtr.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/RefPtr.h"
+#include <memory>
 
 namespace blink {
 
@@ -68,13 +68,13 @@ public:
 private:
     ContextMenuController(Page*, ContextMenuClient*);
 
-    PassOwnPtr<ContextMenu> createContextMenu(Event*);
-    PassOwnPtr<ContextMenu> createContextMenu(LocalFrame*, const LayoutPoint&);
+    std::unique_ptr<ContextMenu> createContextMenu(Event*);
+    std::unique_ptr<ContextMenu> createContextMenu(LocalFrame*, const LayoutPoint&);
     void populateCustomContextMenu(const Event&);
     void showContextMenu(Event*);
 
     ContextMenuClient* m_client;
-    OwnPtr<ContextMenu> m_contextMenu;
+    std::unique_ptr<ContextMenu> m_contextMenu;
     Member<ContextMenuProvider> m_menuProvider;
     HitTestResult m_hitTestResult;
 };