title: Android SDK: source code of Contact ContentProvider
body: <p>I'm building a <code>ContentProvider</code> and I'm interesting in how Android Team builds <code>Contact ContentProvider</code>. But, when I browse <code>Android source code</code> (in <code>Android SDK\source</code> folder), I don't see something relate to my need. I just see the most relation is : <code>ContentProvider.java</code> (in folder <code>Android SDK\sources\android-15\android\content</code>), but It's just a class for custom build <code>Content Provider</code>.</p>
  
  <p>Who can point out for me, which file is it, please.</p>
  
  <p>thanks :)</p>