HTML UI implementation for the Google Feedback client for Chrome/ChromeOS....

chrome/browser/userfeedback/proto/common.proto

 // Copyright 2009 Google Inc. All Rights Reserved.
 // Author: morgwai@google.com (Morgwai Kotarbinski)
 //
 // Basic messages used by all systems (extension, feedbackserver,
 // silver-bullet clustering, android etc).
 
 syntax = "proto2";
 
 package userfeedback;
 
 // Data present in all kinds of feedbacks, regardless of source (Web, Android,
 // other).
 message CommonData {
   optional fixed64 gaia_id = 1;
 
   // Description of the problem entered by user.
   optional string description = 2;
   optional string description_translated = 4;
-  optional string source_descripton_language = 5 [ default = "en" ];
+  optional string source_description_language = 5 [ default = "en" ];
+  optional string ui_language = 6 [ default = "en_US" ];
 
   optional string user_email = 3;
+  
+  // Unique identifier of feedback report. If set than only one report
+  // with the same identifier is stored in the system.
+  // If you are not sure how to use it leave it not set.
+  optional string unique_report_identifier = 7;
 };