Fix issue with invalid aspect ratio causing issues resizing

- If the app doesn't have an aspect ratio, we should use the default
  aspect ratio otherwise we'll use 0 which generates a bunch of wrong
  bounds

Change-Id: I2eb4114474cc1ab948a9142d67cbe04ad00d32aa
Bug: 159908926
Test: Enter pip from movies as the movie is loading (the aspect ratio
      is not set up to that point)