Adds the new URLRequest::OnBeforeNetworkStart hook to the

content/browser/loader/stream_resource_handler.cc

Index: content/browser/loader/stream_resource_handler.cc
diff --git a/content/browser/loader/stream_resource_handler.cc b/content/browser/loader/stream_resource_handler.cc
index 67309e8189d72785a1318b4b9c03b621aeffc9c7..7c241bda5f256ffa9e429dd8d780a8524179ddf9 100644
--- a/content/browser/loader/stream_resource_handler.cc
+++ b/content/browser/loader/stream_resource_handler.cc
@@ -57,6 +57,12 @@ bool StreamResourceHandler::OnWillStart(int request_id,
   return true;
 }
 
+bool StreamResourceHandler::OnBeforeNetworkStart(int request_id,
+                                                 const GURL& url,
+                                                 bool* defer) {
+  return true;
+}
+
 bool StreamResourceHandler::OnWillRead(int request_id,
                                        scoped_refptr<net::IOBuffer>* buf,
                                        int* buf_size,