title: Android ActionBar Backbutton Default Padding
body: <p>I am creating a custom <code>ActionBar</code> using a <code>RelativeLayout</code> with an <code>ImageButton</code> to the left to <strong>replace</strong> it. I have downloaded the Back icon from google's website to use on the <code>ImageButton</code></p>
  
  <p>The problem is that I need to create a Back button to replace the original <code>ActionBar</code>'s Back Button, and I need it to be exactly identical to the original <code>ActionBar</code>'s back button.</p>
  
  <p><strong>I am wondering what is the system's default padding for the Back button image?</strong>  </p>