Add app hashes to feedback whitelist.

BUG=463552

Review URL: https://codereview.chromium.org/977583003

Cr-Commit-Position: refs/heads/master@{#318935}

chrome/browser/resources/feedback/js/event_handler.js

@@ -52,6 +52,10 @@ var whitelistedExtensionIds = [
   '0F42756099D914A026DADFA182871C015735DD95', // Hangouts Extension
   '1B7734733E207CCE5C33BFAA544CA89634BF881F', // GLS nightly
   'E2ACA3D943A3C96310523BCDFD8C3AF68387E6B7', // GLS stable
+  '11B478CEC461C766A2DC1E5BEEB7970AE06DC9C2', // http://crbug.com/463552
+  '0EFB879311E9EFBB7C45251F89EC655711B1F6ED', // http://crbug.com/463552
+  '9193D3A51E2FE33B496CDA53EA330423166E7F02', // http://crbug.com/463552
+  'F9119B8B18C7C82B51E7BC6FF816B694F2EC3E89', // http://crbug.com/463552
 ];