tree 40b554ece6ad2253c4176abc151e3c0d46d8db24
parent ede7d958ab54a0701baa8ae8b494e8ea905c61c6
author Chris Craik <ccraik@google.com> 1459194847 -0700
committer Chris Craik <ccraik@google.com> 1459283415 -0700

Overdraw avoidance in new pipeline

bug:27873093

Adds the simple overdraw avoidance optimization to the new
pipeline. This means when LayerBuilder defers draws that are opaque over
the full area of the repaint region, it will discard all drawing content
beneth.

Also moves a lot of complexity out of BakedOpState's header.

Change-Id: Iffca6d8e1b170ef31a5d6c83d25592670e02323d