Added support for multiple urls in the component updater.

chrome/browser/component_updater/update_response.h

Index: chrome/browser/component_updater/update_response.h
diff --git a/chrome/browser/component_updater/update_response.h b/chrome/browser/component_updater/update_response.h
index 495fef4114d0f6104e708b5215ef17898d7a8172..6e174ec69dbbc2fe6f387f4cfdcae1b51b543066 100644
--- a/chrome/browser/component_updater/update_response.h
+++ b/chrome/browser/component_updater/update_response.h
@@ -90,6 +90,7 @@ class UpdateResponse {
     std::string extension_id;
 
     // The list of fallback urls, for full and diff updates respectively.
+    // These urls are base urls; they don't include the filename.
     std::vector<GURL> crx_urls;
     std::vector<GURL> crx_diffurls;