GitLab

Previously PaintTimingDetector depended the painter not to paint
opacity:0 contents to avoid detect timing of them, which didn't work
for composited layers and CompositeAfterPaint where we always paint
opacity:0.

Bug: 957674
Change-Id: Ie5530f5a4c00d5e350b6dc2d1922f58e3953e7f0
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2106341
Commit-Queue: Xianzhu Wang <wangxianzhu@chromium.org>
Reviewed-by: Philip Rogers <pdr@chromium.org>
Reviewed-by: Nicolás Peña Moreno <npm@chromium.org>
Cr-Commit-Position: refs/heads/master@{#751105}