Schetch changes required to support URLFetcher saving response to a file

chrome/browser/extensions/extension_updater.h

Index: chrome/browser/extensions/extension_updater.h
diff --git a/chrome/browser/extensions/extension_updater.h b/chrome/browser/extensions/extension_updater.h
index 3baaf2e81fc3c5d32a45cf0240d49dc7709ff8dd..e968cede886b7f484057315052d41446ed484257 100644
--- a/chrome/browser/extensions/extension_updater.h
+++ b/chrome/browser/extensions/extension_updater.h
@@ -236,12 +236,24 @@ class ExtensionUpdater : public URLFetcher::Delegate {
   base::TimeDelta DetermineFirstCheckDelay();
 
   // URLFetcher::Delegate interface.
-  virtual void OnURLFetchComplete(const URLFetcher* source,
-                                  const GURL& url,
-                                  const net::URLRequestStatus& status,
-                                  int response_code,
-                                  const ResponseCookies& cookies,
-                                  const std::string& data);
+  virtual void OnURLFetchComplete(
+      const URLFetcher* source,
+      const GURL& url,
+      const net::URLRequestStatus& status,
+      int response_code,
+      const ResponseCookies& cookies,
+      const std::string& data);
+
+  virtual void OnURLFetchCompleteNew(
+      const URLFetcher* source,
+      const GURL& url,
+      const net::URLRequestStatus& status,
+      int response_code,
+      const ResponseCookies& cookies,
+      const URLFetcher::ResponseBodyContainerInterface& response_body);
+
+  virtual URLFetcher::ResponseBodyContainerInterface*
+      CreateResponseBodyContainer();
 
   // These do the actual work when a URL fetch completes.
   virtual void OnManifestFetchComplete(const GURL& url,