GridLayout changes for API council

* Hide set/getPrinter methods. A change/addition like this should
  happen for all views if it happens, not just for one specific view.

* Follow Android style guidelines for fields.

Bug 10549037

Change-Id: I1823d7bbbd8bcc678c5be2358ca23a8dc6dbfd15
(cherry picked from commit 916159461bf17e13c245a709935a0d1133e0ed91)