title: Android Google plus login button style in xml
body: <p>Is it possible to change the style of the Google+ sing-in button in the layout xml file? According to the Branding guidelines <a href="https://developers.google.com/+/branding-guidelines" rel="nofollow noreferrer">here</a> you have four options.
  I know it is possible to do it from code like in this <a href="https://stackoverflow.com/a/21111914">answer</a>, but I would like to avoid that if possible.</p>