Introduce url_list to the Response scheme of CacheStorage.

third_party/WebKit/Source/modules/serviceworkers/FetchEvent.cpp

Index: third_party/WebKit/Source/modules/serviceworkers/FetchEvent.cpp
diff --git a/third_party/WebKit/Source/modules/serviceworkers/FetchEvent.cpp b/third_party/WebKit/Source/modules/serviceworkers/FetchEvent.cpp
index 6e77abc4061cd7a92b73a8de21d1f0dafc12f1ab..e72a9988e5e8a181f8a2361901110ffae09aed12 100644
--- a/third_party/WebKit/Source/modules/serviceworkers/FetchEvent.cpp
+++ b/third_party/WebKit/Source/modules/serviceworkers/FetchEvent.cpp
@@ -121,7 +121,12 @@ void FetchEvent::onNavigationPreloadResponse(
           m_scriptState.get(), new BytesConsumerForDataConsumerHandle(
                                    m_scriptState->getExecutionContext(),
                                    std::move(dataConsumeHandle))));
-  responseData->setURL(response->url());
+  const WebVector<WebURL>& webURLList = response->urlList();
+  // Navigation preload doesn't support redirect.
+  DCHECK_EQ(1u, webURLList.size());
+  Vector<KURL> urlList(1);
+  urlList[0] = webURLList[0];
+  responseData->setURLList(urlList);
   responseData->setStatus(response->status());
   responseData->setStatusMessage(response->statusText());
   responseData->setResponseTime(response->responseTime());