XMLHttpRequest#responseText should use a rope

Source/core/inspector/InspectorConsoleAgent.cpp

Index: Source/core/inspector/InspectorConsoleAgent.cpp
diff --git a/Source/core/inspector/InspectorConsoleAgent.cpp b/Source/core/inspector/InspectorConsoleAgent.cpp
index 7ead66e5c667e3af7938ed038393c65fb4b2c18a..c09dd7718d5f66f543940f409a0f7f09d646d27e 100644
--- a/Source/core/inspector/InspectorConsoleAgent.cpp
+++ b/Source/core/inspector/InspectorConsoleAgent.cpp
@@ -264,7 +264,7 @@ void InspectorConsoleAgent::didCommitLoad(Frame* frame, DocumentLoader* loader)
     reset();
 }
 
-void InspectorConsoleAgent::didFinishXHRLoading(ThreadableLoaderClient*, unsigned long requestIdentifier, const String&, const String& url, const String& sendURL, unsigned sendLineNumber)
+void InspectorConsoleAgent::didFinishXHRLoading(ThreadableLoaderClient*, unsigned long requestIdentifier, ScriptString, const String& url, const String& sendURL, unsigned sendLineNumber)
 {
     if (m_frontend && m_state->getBoolean(ConsoleAgentState::monitoringXHR)) {
         String message = "XHR finished loading: \"" + url + "\".";