Must mask request_uri

analytics/index.js

diff --git a/analytics/index.js b/analytics/index.js
index 05d2133..175ca09 100644
--- a/analytics/index.js
+++ b/analytics/index.js
@@ -10,8 +10,8 @@
       record.apiproxy_revision = res.proxy.revision;
     }
 
-    if(config.mask_request_url) {
-      record.request_url = config.mask_request_url;  
+    if(config.mask_request_uri) {
+      record.request_uri = config.mask_request_uri;  
     }
 
     if(config.mask_request_path) {