Adds a Training Manager to the hotword extension.

chrome/browser/resources/hotword/constants.js

 // Copyright 2014 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.
 
 cr.define('hotword.constants', function() {
 'use strict';
 
 /**
  * Hotword data shared module extension's ID.
  * @const {string}
@@ skipping 103 matching lines @@
   WAKE_UP_HELPER: 'wuh'
 };
 
 /**
  * Source of a hotwording session request.
  * @enum {string}
  */
 var SessionSource = {
   LAUNCHER: 'launcher',
   NTP: 'ntp',
-  ALWAYS: 'always'
+  ALWAYS: 'always',
+  TRAINING: 'training'
 };
 
 /**
  * MediaStream open success/errors to be reported via UMA.
  * DO NOT remove or renumber values in this enum. Only add new ones.
  * @enum {number}
  */
 var UmaMediaStreamOpenResult = {
   SUCCESS: 0,
   UNKNOWN: 1,
@@ skipping 72 matching lines @@
   NaClPlugin: NaClPlugin,
   SessionSource: SessionSource,
   TimeoutMs: TimeoutMs,
   UmaMediaStreamOpenResult: UmaMediaStreamOpenResult,
   UmaMetrics: UmaMetrics,
   UmaNaClMessageTimeout: UmaNaClMessageTimeout,
   UmaNaClPluginLoadResult: UmaNaClPluginLoadResult
 };
 
 });