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The tests failed because of different graphics layer structures about
ChildContainmentLayer and AncestorClippingLayer which are intentionally
not created by BGPT, so rebaseline them.

Bug: 854196
Cq-Include-Trybots: luci.chromium.try:linux-blink-gen-property-trees;luci.chromium.try:linux_layout_tests_slimming_paint_v2;master.tryserver.blink:linux_trusty_blink_rel
Change-Id: I96223cc733ff0a1e792d4660e8e667a7d9e17460
Reviewed-on: https://chromium-review.googlesource.com/1178628Reviewed-by: Philip Rogers <pdr@chromium.org>
Commit-Queue: Xianzhu Wang <wangxianzhu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#583807}