Introduce mock test system for navigator content utils

Source/modules/navigatorcontentutils/NavigatorContentUtils.h

 /*
  * Copyright (C) 2011, Google Inc. All rights reserved.
  * Copyright (C) 2012, Samsung Electronics. 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
@@ skipping 29 matching lines @@
 
 class NavigatorContentUtils FINAL : public NoBaseWillBeGarbageCollectedFinalized<NavigatorContentUtils>, public WillBeHeapSupplement<Page> {
     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(NavigatorContentUtils);
 public:
     virtual ~NavigatorContentUtils();
 
     static NavigatorContentUtils* from(Page&);
     static const char* supplementName();
 
     static void registerProtocolHandler(Navigator&, const String& scheme, const String& url, const String& title, ExceptionState&);
-
     static String isProtocolHandlerRegistered(Navigator&, const String& scheme, const String& url, ExceptionState&);
     static void unregisterProtocolHandler(Navigator&, const String& scheme, const String& url, ExceptionState&);
 
     static PassOwnPtrWillBeRawPtr<NavigatorContentUtils> create(PassOwnPtr<NavigatorContentUtilsClient>);
 
     virtual void trace(Visitor* visitor) OVERRIDE { WillBeHeapSupplement<Page>::trace(visitor); }
 
+    void setClientForTest(PassOwnPtr<NavigatorContentUtilsClient> client) { m_client = client; }
+
 private:
     explicit NavigatorContentUtils(PassOwnPtr<NavigatorContentUtilsClient> client)
         : m_client(client)
     { }
 
     NavigatorContentUtilsClient* client() { return m_client.get(); }
 
     OwnPtr<NavigatorContentUtilsClient> m_client;
 };
 
 } // namespace WebCore
 
 #endif // NavigatorContentUtils_h