mstensho@, are you looking into this? We're trying to avoid leaving expectations sitting in TestExpectations for long periods because it removes test coverage. Standard practice would be to rebaseline to the incorrect result and leave the bug open.

@schenney, No, not looking into it at the moment, so rebaselining sounds like a plan? Shall I do it?

Thanks. I will do it. I'm working through rebaselining everything paint and invalidation related, and I'm in the best place to avoid merge conflicts.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/959aa7f6f37c53cd282c7e4a9495a648f43847e2

commit 959aa7f6f37c53cd282c7e4a9495a648f43847e2
Author: schenney <schenney@chromium.org>
Date: Wed Mar 22 19:40:10 2017

Rebaseline paint/invalidation/paged-with-overflowing-block-rl.html

The result regressed when a more serious issue was fixed. It's not
likely to get fixed real soon, so rebaseline the result to get coverage
of other changes but leave th ebug open so we know we're failing.

TBR=mstensho@opera.com
BUG= 683339 

Review-Url: https://codereview.chromium.org/2762943005
Cr-Commit-Position: refs/heads/master@{#458844}

[modify] https://crrev.com/959aa7f6f37c53cd282c7e4a9495a648f43847e2/third_party/WebKit/LayoutTests/TestExpectations
[modify] https://crrev.com/959aa7f6f37c53cd282c7e4a9495a648f43847e2/third_party/WebKit/LayoutTests/platform/linux/paint/invalidation/paged-with-overflowing-block-rl-expected.png
[add] https://crrev.com/959aa7f6f37c53cd282c7e4a9495a648f43847e2/third_party/WebKit/LayoutTests/platform/linux/virtual/disable-spinvalidation/paint/invalidation/paged-with-overflowing-block-rl-expected.png
[modify] https://crrev.com/959aa7f6f37c53cd282c7e4a9495a648f43847e2/third_party/WebKit/LayoutTests/platform/mac-mac10.9/paint/invalidation/paged-with-overflowing-block-rl-expected.png
[add] https://crrev.com/959aa7f6f37c53cd282c7e4a9495a648f43847e2/third_party/WebKit/LayoutTests/platform/mac-mac10.9/virtual/disable-spinvalidation/paint/invalidation/paged-with-overflowing-block-rl-expected.png
[modify] https://crrev.com/959aa7f6f37c53cd282c7e4a9495a648f43847e2/third_party/WebKit/LayoutTests/platform/mac/paint/invalidation/paged-with-overflowing-block-rl-expected.png
[add] https://crrev.com/959aa7f6f37c53cd282c7e4a9495a648f43847e2/third_party/WebKit/LayoutTests/platform/mac/virtual/disable-spinvalidation/paint/invalidation/paged-with-overflowing-block-rl-expected.png
[modify] https://crrev.com/959aa7f6f37c53cd282c7e4a9495a648f43847e2/third_party/WebKit/LayoutTests/platform/win/paint/invalidation/paged-with-overflowing-block-rl-expected.png
[add] https://crrev.com/959aa7f6f37c53cd282c7e4a9495a648f43847e2/third_party/WebKit/LayoutTests/platform/win/virtual/disable-spinvalidation/paint/invalidation/paged-with-overflowing-block-rl-expected.png

Chris, apparently you're fixing this with https://chromium-review.googlesource.com/c/chromium/src/+/646700 :)

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/c3a3481c4b1b08775b477144d1d2873a2a3d9900

commit c3a3481c4b1b08775b477144d1d2873a2a3d9900
Author: Chris Harrelson <chrishtr@chromium.org>
Date: Sat Sep 09 06:46:57 2017

Implement fragmentation in the pre-paint tree walk.

Compute fragments, fragment clips, pagination offset, and paint offset that
includes fragmentation. Store fragment clips in the clip paint property tree.
Fragment clips sit above other clips, effects and transforms that belong
to a LayoutObject. They also contribute to LocalBorderBoxProperties.
However, fragment clips have no children in the clip tree, and hence only apply
to that specific LayoutObject. This is because every LayoutObject (which has a
PaintLayer) fragments itself, and does not inherit fragment clips from any
ancestor.

Paint offsets for fragments are currently stored separately from paint offsets
for LayoutObjects. The latter are unchanged in this patch, and hence do not
take fragmentation into account (see #1 below).

Still to be done in future patches:

1. Remove the slow path in PaintInvalidator for fragmentation, and remove the
paint offset field from LayoutObject.

2. Change other callsites to FirstFragment() that ignore other fragments
to be fragmentation-aware.

Bug:  648274 , 683339 
Cq-Include-Trybots: master.tryserver.chromium.linux:linux_layout_tests_slimming_paint_v2
Change-Id: I32b093091172878c21163b66923cac88c5176597
Reviewed-on: https://chromium-review.googlesource.com/646700
Commit-Queue: Chris Harrelson <chrishtr@chromium.org>
Reviewed-by: Tien-Ren Chen <trchen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#500792}
[modify] https://crrev.com/c3a3481c4b1b08775b477144d1d2873a2a3d9900/third_party/WebKit/LayoutTests/FlagExpectations/enable-slimming-paint-v2
[modify] https://crrev.com/c3a3481c4b1b08775b477144d1d2873a2a3d9900/third_party/WebKit/LayoutTests/fast/multicol/transform-inside-opacity-expected.png
[add] https://crrev.com/c3a3481c4b1b08775b477144d1d2873a2a3d9900/third_party/WebKit/LayoutTests/fast/multicol/transform-inside-opacity-expected.txt
[modify] https://crrev.com/c3a3481c4b1b08775b477144d1d2873a2a3d9900/third_party/WebKit/LayoutTests/fast/multicol/transform-inside-opacity.html
[modify] https://crrev.com/c3a3481c4b1b08775b477144d1d2873a2a3d9900/third_party/WebKit/LayoutTests/platform/linux/paint/invalidation/paged-with-overflowing-block-rl-expected.png
[modify] https://crrev.com/c3a3481c4b1b08775b477144d1d2873a2a3d9900/third_party/WebKit/LayoutTests/platform/mac-mac10.9/paint/invalidation/paged-with-overflowing-block-rl-expected.png
[modify] https://crrev.com/c3a3481c4b1b08775b477144d1d2873a2a3d9900/third_party/WebKit/LayoutTests/platform/mac/paint/invalidation/paged-with-overflowing-block-rl-expected.png
[modify] https://crrev.com/c3a3481c4b1b08775b477144d1d2873a2a3d9900/third_party/WebKit/LayoutTests/platform/win/paint/invalidation/paged-with-overflowing-block-rl-expected.png
[modify] https://crrev.com/c3a3481c4b1b08775b477144d1d2873a2a3d9900/third_party/WebKit/Source/core/exported/WebViewTest.cpp
[modify] https://crrev.com/c3a3481c4b1b08775b477144d1d2873a2a3d9900/third_party/WebKit/Source/core/layout/LayoutObject.cpp
[modify] https://crrev.com/c3a3481c4b1b08775b477144d1d2873a2a3d9900/third_party/WebKit/Source/core/layout/LayoutObject.h
[modify] https://crrev.com/c3a3481c4b1b08775b477144d1d2873a2a3d9900/third_party/WebKit/Source/core/layout/LayoutTreeAsText.cpp
[modify] https://crrev.com/c3a3481c4b1b08775b477144d1d2873a2a3d9900/third_party/WebKit/Source/core/paint/FragmentData.cpp
[modify] https://crrev.com/c3a3481c4b1b08775b477144d1d2873a2a3d9900/third_party/WebKit/Source/core/paint/FragmentData.h
[modify] https://crrev.com/c3a3481c4b1b08775b477144d1d2873a2a3d9900/third_party/WebKit/Source/core/paint/ObjectPaintProperties.h
[modify] https://crrev.com/c3a3481c4b1b08775b477144d1d2873a2a3d9900/third_party/WebKit/Source/core/paint/PaintInvalidator.cpp
[modify] https://crrev.com/c3a3481c4b1b08775b477144d1d2873a2a3d9900/third_party/WebKit/Source/core/paint/PaintLayer.cpp
[modify] https://crrev.com/c3a3481c4b1b08775b477144d1d2873a2a3d9900/third_party/WebKit/Source/core/paint/PaintLayer.h
[modify] https://crrev.com/c3a3481c4b1b08775b477144d1d2873a2a3d9900/third_party/WebKit/Source/core/paint/PaintLayerClipper.cpp
[modify] https://crrev.com/c3a3481c4b1b08775b477144d1d2873a2a3d9900/third_party/WebKit/Source/core/paint/PaintLayerClipper.h
[modify] https://crrev.com/c3a3481c4b1b08775b477144d1d2873a2a3d9900/third_party/WebKit/Source/core/paint/PaintLayerClipperTest.cpp
[modify] https://crrev.com/c3a3481c4b1b08775b477144d1d2873a2a3d9900/third_party/WebKit/Source/core/paint/PaintLayerPainter.cpp
[modify] https://crrev.com/c3a3481c4b1b08775b477144d1d2873a2a3d9900/third_party/WebKit/Source/core/paint/PaintPropertyTreeBuilder.cpp
[modify] https://crrev.com/c3a3481c4b1b08775b477144d1d2873a2a3d9900/third_party/WebKit/Source/core/paint/PaintPropertyTreeBuilder.h
[modify] https://crrev.com/c3a3481c4b1b08775b477144d1d2873a2a3d9900/third_party/WebKit/Source/core/paint/PaintPropertyTreeBuilderTest.cpp
[modify] https://crrev.com/c3a3481c4b1b08775b477144d1d2873a2a3d9900/third_party/WebKit/Source/core/paint/PaintPropertyTreeUpdateTests.cpp
[modify] https://crrev.com/c3a3481c4b1b08775b477144d1d2873a2a3d9900/third_party/WebKit/Source/core/paint/README.md
[modify] https://crrev.com/c3a3481c4b1b08775b477144d1d2873a2a3d9900/third_party/WebKit/Source/core/paint/RarePaintData.h
[modify] https://crrev.com/c3a3481c4b1b08775b477144d1d2873a2a3d9900/third_party/WebKit/Source/core/scheduler/FrameThrottlingTest.cpp
[modify] https://crrev.com/c3a3481c4b1b08775b477144d1d2873a2a3d9900/third_party/WebKit/Source/core/svg/graphics/SVGImage.cpp