unregisterProtocolHandler  196 Source/modules/navigatorcontentutils/NavigatorContentUtils.cpp void NavigatorContentUtils::unregisterProtocolHandler(Navigator& navigator, const String& scheme, const String& url, ExceptionState& exceptionState)
unregisterProtocolHandler  967 Source/web/ChromeClientImpl.cpp void NavigatorContentUtilsClientImpl::unregisterProtocolHandler(const String& scheme, const WebCore::KURL& baseURL, const WebCore::KURL& url)