Add a Javascript wrapper around ServiceRegistry and expose it to WebUI.

chrome/browser/resources/omnibox/omnibox.js

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 /**
  * Javascript for omnibox.html, served from chrome://omnibox/
  * This is used to debug omnibox ranking.  The user enters some text
  * into a box, submits it, and then sees lots of debug information
  * from the autocompleter that shows what omnibox would do with that
  * input.
  *
  * The simple object defined in this javascript file listens for
  * certain events on omnibox.html, sends (when appropriate) the
  * input text to C++ code to start the omnibox autcomplete controller
  * working, and listens from callbacks from the C++ code saying that
  * results are available.  When results (possibly intermediate ones)
  * are available, the Javascript formats them and displays them.
  */
 define('main', [
     'mojo/public/js/bindings/connection',
     'chrome/browser/ui/webui/omnibox/omnibox.mojom',
-], function(connector, browser) {
+    'content/public/renderer/service_registry',
+], function(connector, browser, serviceRegistry) {
   'use strict';
 
   var connection;
   var page;
 
   /**
    * Register our event handlers.
    */
   function initialize() {
     $('omnibox-input-form').addEventListener(
@@ skipping 391 matching lines @@
   }
 
   OmniboxPageImpl.prototype =
       Object.create(browser.OmniboxPageStub.prototype);
 
   OmniboxPageImpl.prototype.handleNewAutocompleteResult = function(result) {
     progressiveAutocompleteResults.push(result);
     refresh();
   };
 
-  return function(handle) {
-    connection = new connector.Connection(handle, OmniboxPageImpl,
-                                          browser.OmniboxUIHandlerMojoProxy);
+  return function() {
+    connection = new connector.Connection(
+        serviceRegistry.getInterface(browser.OmniboxUIHandlerMojoProxy.NAME_),

[darin (slow to review), 2014/06/21 04:44:15]

I think it would be nice to avoid having to use the NAME_ variable here. The
trailing "_" indicates a private field.

[Sam McNally, 2014/06/24 08:45:01]

Added a TODO.

+        OmniboxPageImpl,
+        browser.OmniboxUIHandlerMojoProxy);
   };
 });