title: Package com.unity3d.player does not exist
body: <p>I tried to make Android (google) project from Unity (to obfuscate some dlls and then make apk by hands). </p>
  
  <p>My project uses facebook sdk.
  The problem is to make project without this error in facebook source files: 
  "<em>package com.unity3d.player does not exist</em>".</p>
  
  <p>It happens on:</p>
  
  <pre><code>import com.unity3d.player.UnityPlayer;
  </code></pre>
  
  <p>I can't figure out how to solve this issue. What do I do wrong? any facebook settings wrong? missing some libraries? what is going on?</p>