Introduce url_list to the Response scheme of CacheStorage.

third_party/WebKit/Source/core/loader/ThreadableLoaderClient.h

Index: third_party/WebKit/Source/core/loader/ThreadableLoaderClient.h
diff --git a/third_party/WebKit/Source/core/loader/ThreadableLoaderClient.h b/third_party/WebKit/Source/core/loader/ThreadableLoaderClient.h
index 87b2cb9b71b61ee3535f5f679b79676f231756f4..942db1fb9b97213e1d86f70a71882c6d148e724d 100644
--- a/third_party/WebKit/Source/core/loader/ThreadableLoaderClient.h
+++ b/third_party/WebKit/Source/core/loader/ThreadableLoaderClient.h
@@ -39,6 +39,7 @@
 
 namespace blink {
 
+class KURL;
 class ResourceError;
 class ResourceResponse;
 class ResourceTimingInfo;
@@ -49,7 +50,7 @@ class CORE_EXPORT ThreadableLoaderClient {
  public:
   virtual void didSendData(unsigned long long /*bytesSent*/,
                            unsigned long long /*totalBytesToBeSent*/) {}
-
+  virtual void didReceiveRedirectTo(const KURL&) {}
   virtual void didReceiveResponse(unsigned long /*identifier*/,
                                   const ResourceResponse&,
                                   std::unique_ptr<WebDataConsumerHandle>) {}