Create RenderSurface on Effect Tree

Move RenderSurface creation reason to effect tree. Update LayerImpl's
API to include SetForceRenderSurface. Update unittests.

R=enne
BUG=557160
CQ_INCLUDE_TRYBOTS=tryserver.blink:linux_blink_rel

Committed: https://crrev.com/4374c2cc231a7e5b6ae65d0e0814b5dccf445200
Cr-Commit-Position: refs/heads/master@{#363544}

Review URL: https://codereview.chromium.org/1491033002

Cr-Commit-Position: refs/heads/master@{#363967}
33 files changed