title: Android cannot resolve play-services symbols
body: <p>When trying to compile, I get the following errors: </p>
  
  <pre><code>Error:(59, 13) error: cannot find symbol class InstanceID
  Error:(59, 37) error: cannot find symbol variable InstanceID
  Error:(60, 59) error: package R does not exist
  Error:(61, 21) error: cannot find symbol variable GoogleCloudMessaging
  Error:(88, 9) error: cannot find symbol variable LocalBroadcastManager
  Error:(117, 9) error: cannot find symbol class GcmPubSub
  Error:(117, 28) error: cannot find symbol variable GcmPubSub
  </code></pre>
  
  <p>This is in a module, which is compiled as dependent on play-services:</p>
  
  <pre><code>com.google.android.gms:play-services:7.8.0    compile
  </code></pre>
  
  <p>I have tried cleaning and building, invalidating the cache and restarting. What am I missing here? Why can't it find the <code>play-services</code> library?</p>