Clean up redundant header files in navigatorcontentutils

Source/modules/navigatorcontentutils/testing/NavigatorContentUtilsClientMock.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "config.h"
 #include "NavigatorContentUtilsClientMock.h"
 
 #include "modules/navigatorcontentutils/NavigatorContentUtilsClient.h"
-#include "wtf/PassOwnPtr.h"
+#include "platform/weborigin/KURL.h"
 #include "wtf/text/StringHash.h"
 
 namespace WebCore {
 
 void NavigatorContentUtilsClientMock::registerProtocolHandler(const String& scheme, const WebCore::KURL& baseURL,
     const WebCore::KURL& url, const String& title)
 {
     ProtocolInfo info;
     info.scheme = scheme;
     info.baseURL = baseURL;
@@ skipping 13 matching lines @@
     return NavigatorContentUtilsClient::CustomHandlersNew;
 }
 
 void NavigatorContentUtilsClientMock::unregisterProtocolHandler(const String& scheme, const WebCore::KURL& baseURL,
     const WebCore::KURL& url)
 {
     m_protocolMap.remove(scheme);
 }
 
 } // WebCore