Add updated Test Support lib docs to reference. am: debd2a7d41 am: 59df5b8029
am: af5c50e1fa

* commit 'af5c50e1fa9bbe779e30f668301c3e5a6340ef82':
  Add updated Test Support lib docs to reference.

Change-Id: I41043e2796d1b7dc797b5bd3d8f296f86414eca2