Add tests for hasOverlappingRendering methods

Added tests for View.hasOverlappingRendering() and the new
API in N, View.setHasOverlappingRendering() and the View
attribute hasOverlappingRendering.

Issue #16561361  Make hasOverlappingRendering settable from outside/XML

Change-Id: I693b8bcf65949f10ea6bb8bb55067f9dcdd087ab
2 files changed