[CompositeAfterPaint] Update test expectations

- Skip virtual/binary-for-devtools/http/tests/devtools
- Mark css3/masking/mask-composite-missing-image.html failing
- Rebaseline 5 tests:
  - gradient, rounded edges and anti-alias differences
  - invalidation rect changes (no image failure)
  All because of base test rebaselines

TBR=pdr@chromium.org

Bug: 524134
Change-Id: I171f3eaff7e78649903441c142ebc9c25171ad2f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1525681
Reviewed-by: Xianzhu Wang <wangxianzhu@chromium.org>
Commit-Queue: Xianzhu Wang <wangxianzhu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#641093}
6 files changed