Remove sync button from chrome://serviceworker-internals page

This removes the button, and the code supporting it, from
chrome://serviceworker-internals.

The sync event itself is unchanged, but it will soon require that the details of
the specific sync registration be passed with it (see crbug/482066) so the
button is no longer useful.

BUG=507280

Review URL: https://codereview.chromium.org/1222313007

Cr-Commit-Position: refs/heads/master@{#337548}

1 files changed, 1 insertions, 1 deletions

diff --git a/content/browser/resources/service_worker/serviceworker_internals.js b/content/browser/resources/service_worker/serviceworker_internals.js
index b5c85ee..ff382dd 100644
--- a/content/browser/resources/service_worker/serviceworker_internals.js
+++ b/content/browser/resources/service_worker/serviceworker_internals.js
@@ -42,7 +42,7 @@ cr.define('serviceworker', function() {
   }
 
   // All commands are completed with 'onOperationComplete'.
-  var COMMANDS = ['stop', 'sync', 'push', 'inspect', 'unregister', 'start'];
+  var COMMANDS = ['stop', 'push', 'inspect', 'unregister', 'start'];
   function commandHandler(command) {
     return function(event) {
       var link = event.target;