commit fc2f116c0d0edbc90ae5902eb5fd691e068d584b
author Philip Rogers <pdr@chromium.org> Wed Oct 17 18:28:31 2018
committer Commit Bot <commit-bot@chromium.org> Wed Oct 17 18:28:31 2018
tree 2865cbec0b6ee061e2e6cbd208b5cf5175f4918b
parent b799c06641e2726f4a34daadc1e37e08bddcd259

[BlinkGenPropertyTrees] Use blink feature instead of layer list flag

This patch makes the renderer's compositor use blink runtime feature
flags to initialize the layer list setting. With this change we no
longer need to separately plumb both a blink feature (i.e., BGPT or
SPV2) and a layer list setting. This prevents the confusion situation of
having the blink feature flags not match the compositor's layer list
setting. This also simplifies the release of Blink Generated Property
Trees because we can use the existing processes for transitioning a
blink feature from test to experimental to stable.

The primary code change is to remove the --enable-layer-lists flag and
instead have render_widget.cc initialize the use_layer_lists setting
from blink feature flags. This patch also cleans up some plumbing for
the --enable-slimming-paint-v2 flag and adds TODOs to remove both
--enable-slimming-paint-v2 and --enable-blink-gen-property-trees.

Bug: 836884
Cq-Include-Trybots: luci.chromium.try:linux-blink-gen-property-trees;luci.chromium.try:android_optional_gpu_tests_rel;luci.chromium.try:linux_layout_tests_slimming_paint_v2;master.tryserver.blink:linux_trusty_blink_rel
Change-Id: Iffdefc896abb00e6692a0d77b4fde5f628cb8ff5
Reviewed-on: https://chromium-review.googlesource.com/c/1278988
Reviewed-by: enne <enne@chromium.org>
Reviewed-by: Avi Drissman <avi@chromium.org>
Commit-Queue: Philip Rogers <pdr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#600486}