Use OwnPtr|PassOwnPtr to pass a pointer of NavigatorContentUtilsClient instance

Source/modules/navigatorcontentutils/NavigatorContentUtils.h

Index: Source/modules/navigatorcontentutils/NavigatorContentUtils.h
diff --git a/Source/modules/navigatorcontentutils/NavigatorContentUtils.h b/Source/modules/navigatorcontentutils/NavigatorContentUtils.h
index b1195872d1a1477c04ffa89d915e41551657589d..c4971b773893f1736397401cc797750746a47882 100644
--- a/Source/modules/navigatorcontentutils/NavigatorContentUtils.h
+++ b/Source/modules/navigatorcontentutils/NavigatorContentUtils.h
@@ -50,16 +50,16 @@ public:
     static String isProtocolHandlerRegistered(Navigator&, const String& scheme, const String& url, ExceptionState&);
     static void unregisterProtocolHandler(Navigator&, const String& scheme, const String& url, ExceptionState&);
 
-    static PassRefPtr<NavigatorContentUtils> create(NavigatorContentUtilsClient*);
+    static PassRefPtr<NavigatorContentUtils> create(PassOwnPtr<NavigatorContentUtilsClient>);
 
 private:
-    explicit NavigatorContentUtils(NavigatorContentUtilsClient* client)
+    explicit NavigatorContentUtils(PassOwnPtr<NavigatorContentUtilsClient> client)
         : m_client(client)
     { }
 
-    NavigatorContentUtilsClient* client() { return m_client; }
+    NavigatorContentUtilsClient* client() { return m_client.get(); }
 
-    NavigatorContentUtilsClient* m_client;
+    OwnPtr<NavigatorContentUtilsClient> m_client;
 };
 
 } // namespace WebCore