Add a trivial logging wrapper around console.log, and add some useful log

chrome/browser/resources/hotword/logging.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', function() {
+  'use strict';
+
+  var DEBUG = false;

[Dan Beam, 2014/09/30 03:42:58]

nit: just remove this

[Anand Mistry (off Chromium), 2014/09/30 04:14:03]

Done.

+
+  /**
+   * Wrapper around console.log allowing debug log message to be enabled during
+   * development.
+   */
+  function debug() {
+    if (hotword.DEBUG || window.localStorage['hotword.DEBUG'])
+      console.log.apply(console, arguments);
+  }
+
+  return {
+    DEBUG: DEBUG,

[Dan Beam, 2014/09/30 03:42:58]

DEBUG: false,

[Anand Mistry (off Chromium), 2014/09/30 04:14:03]

Done.

+    debug: debug
+  };
+});