title: Receiving "Unknown Uri" message when using managedQuery with registered ContentProvider
body: <p>I'm working on Sony GTV and the Logitech revue GTV.</p>
  
  <p>I want to run managedQuery for the Google <code>quicksearchbox</code>.
  I found after running <code>dumpstate</code>, in the "Registered ContentProviders" section,
  that the Content_Uri is : "com.android.quicksearchbox.google".</p>
  
  <p>But when I use that URI in a query:</p>
  
  <pre><code>Uri uri = Uri.parse("content://com.android.quicksearchbox.google");   
  Cursor mCursor = managedQuery(uri, null, null, null, null);
  </code></pre>
  
  <p>I receive an "Unknown URI" error message.</p>
  
  <p>It works with a YouTube content_uri:</p>
  
  <pre><code>Uri uri = Uri.parse("content://com.google.android.youtube.googletv.SuggestionProvider");  
  Cursor mCursor = managedQuery(uri, null, null, null, null);
  </code></pre>
  
  <p>Where did I go wrong?</p>