Add LayoutTests for URL list of Response

third_party/WebKit/Source/modules/fetch/Response.cpp

Index: third_party/WebKit/Source/modules/fetch/Response.cpp
diff --git a/third_party/WebKit/Source/modules/fetch/Response.cpp b/third_party/WebKit/Source/modules/fetch/Response.cpp
index 58c2cd905cc078eec5f1b9d47c967dfbc8344912..c25be89f36609013615ae7689c5f2cd9cba574d4 100644
--- a/third_party/WebKit/Source/modules/fetch/Response.cpp
+++ b/third_party/WebKit/Source/modules/fetch/Response.cpp
@@ -446,6 +446,10 @@ String Response::internalMIMEType() const {
   return m_response->internalMIMEType();
 }
 
+const Vector<KURL>& Response::internalURLList() const {
+  return m_response->internalURLList();
+}
+
 void Response::installBody() {
   if (!internalBodyBuffer())
     return;