Adds the new URLRequest::OnBeforeNetworkStart hook to the

content/browser/download/save_file_resource_handler.cc

Index: content/browser/download/save_file_resource_handler.cc
diff --git a/content/browser/download/save_file_resource_handler.cc b/content/browser/download/save_file_resource_handler.cc
index d6405ffdb7a436e2b1b6834caeefafd545c32266..18abc7dfd79f6d62dec0e21a26ac48e755f11b5c 100644
--- a/content/browser/download/save_file_resource_handler.cc
+++ b/content/browser/download/save_file_resource_handler.cc
@@ -74,6 +74,12 @@ bool SaveFileResourceHandler::OnWillStart(int request_id,
   return true;
 }
 
+bool SaveFileResourceHandler::OnBeforeNetworkStart(int request_id,
+                                                   const GURL& url,
+                                                   bool* defer) {
+  return true;
+}
+
 bool SaveFileResourceHandler::OnWillRead(int request_id,
                                          scoped_refptr<net::IOBuffer>* buf,
                                          int* buf_size,