Stop playing/recording when not needed.

chrome/browser/resources/whispernet_proxy/js/init.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.
 
 'use strict';
 
 // Globals holding our encoder and decoder. We will never have more than one
 // Global variable that will be used to access this Nacl bridge.
 var whispernetNacl = null;
 
@@ skipping 24 matching lines @@
   chrome.copresencePrivate.sendInitialized(true);
 }
 
 /**
  * Sends a request to whispernet to encode a token.
  * @param {string} token Token to encode. This needs to be a base64 string.
  * @param {boolean} audible Whether we should use encode audible samples.
  */
 function encodeTokenRequest(token, audible) {
   if (whisperEncoder) {
+    console.log('Got encoding request');

[xiyuan, 2014/08/12 18:57:50]

nit: remove debugging log?

[rkc, 2014/08/13 00:28:59]

Done.

     whisperEncoder.encode(atob(token), audible, true);
   } else {
     console.error('encodeTokenRequest: Whisper not initialized!');
   }
 }
 
 /**
  * Sends a request to whispernet to decode samples.
  * @param {ArrayBuffer} samples Array of samples to decode.
  */
@@ skipping 41 matching lines @@
  */
 function initWhispernet() {
   console.log('init: Starting Nacl bridge.');
   // TODO(rkc): Figure out how to embed the .nmf and the .pexe into component
   // resources without having to rename them to .js.
   whispernetNacl = new NaclBridge('whispernet_proxy.nmf.png',
                                   onWhispernetLoaded);
 }
 
 window.addEventListener('DOMContentLoaded', initWhispernet);