Implement a second version of the credentials passing API

chrome/browser/resources/gaia_auth/background.js

 // Copyright 2013 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.
 
 /**
  * @fileoverview
  * A background script of the auth extension that bridges the communication
  * between the main and injected scripts.
  *
  * Here is an overview of the communication flow when SAML is being used:
@@ skipping 145 matching lines @@
         'setGaiaUrl', this.onSetGaiaUrl_.bind(this));
     this.channelMain_.registerMessage(
         'setBlockInsecureContent', this.onSetBlockInsecureContent_.bind(this));
     this.channelMain_.registerMessage(
         'resetAuth', this.onResetAuth_.bind(this));
     this.channelMain_.registerMessage(
         'startAuth', this.onAuthStarted_.bind(this));
     this.channelMain_.registerMessage(
         'getScrapedPasswords',
         this.onGetScrapedPasswords_.bind(this));
+    this.channelMain_.registerMessage(
+        'apiResponse', this.onAPIResponse_.bind(this));
 
     this.channelMain_.send({
       'name': 'channelConnected'
     });
   },
 
   /**
    * Sets up the communication channel with the injected script.
    */
   setupForInjected: function(port) {
@@ skipping 158 matching lines @@
    * @return {Array.<string>} The array with de-duped scraped passwords.
    */
   onGetScrapedPasswords_: function() {
     var passwords = {};
     for (var property in this.passwordStore_) {
       passwords[this.passwordStore_[property]] = true;
     }
     return Object.keys(passwords);
   },
 
+  /**
+   * Handler for 'apiResponse' signal sent from the main script. Passes on the
+   * |msg| to the injected script.
+   */
+  onAPIResponse_: function(msg) {
+    this.channelInjected_.send(msg);
+  },
+
   onAPICall_: function(msg) {
     this.channelMain_.send(msg);
   },
 
   onUpdatePassword_: function(msg) {
     if (!this.authStarted_)
       return;
 
     this.passwordStore_[msg.id] = msg.password;
   },
 
   onPageLoaded_: function(msg) {
     if (this.channelMain_)
       this.channelMain_.send({name: 'onAuthPageLoaded', url: msg.url});
   }
 };
 
 var backgroundBridgeManager = new BackgroundBridgeManager();
 backgroundBridgeManager.run();