title: how to open the developer tools for a webview in chrome packaged apps?
body: <p>In chrome packged apps, i was able to to open the Developer Tools for a webview by right-clicking until a few weeks ago . However, after the chrome has been updated , it is impossible. (Chrome version is 29.0.1547.66)</p>
  
  <p>Is it possible to enable the right click of webview as before ?  Or is there any api to open the developer tools for a webview?</p>