I will label this test as failing because I am not familiar with webkit tests.

I observed that
https://build.chromium.org/p/chromium.webkit/builders/WebKit%20Win10/builds/10960
is the first build in which the tests failed, which contains a rebaselining https://chromium.googlesource.com/chromium/src/+/d3fafe01982462138b0f82e75649e65370ca9111

For windows bots, sometimes NeedsRebaseLine can be skipped. I think this test just needs another rebaseline. I will file a CL.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/51ddb081cea0371a8dd329a7cfe2a6973f11b661

commit 51ddb081cea0371a8dd329a7cfe2a6973f11b661
Author: battre <battre@chromium.org>
Date: Wed Jun 08 13:51:49 2016

Mark printing/thead-repeats-at-top-of-each-page.html as failing on Win10

BUG= 618082 , 24826 
TBR=robhogan@gmail.com
NOTRY=true

Review-Url: https://codereview.chromium.org/2049013002
Cr-Commit-Position: refs/heads/master@{#398540}

[modify] https://crrev.com/51ddb081cea0371a8dd329a7cfe2a6973f11b661/third_party/WebKit/LayoutTests/TestExpectations

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/67a46a72b12d0a556cf0ccec546b08be058771ea

commit 67a46a72b12d0a556cf0ccec546b08be058771ea
Author: xidachen <xidachen@chromium.org>
Date: Wed Jun 08 14:14:23 2016

Rebaseline printing/thead-repeats-at-top-of-each-page.html again

It seems that after this rebaseline CL:
https://codereview.chromium.org/2042583002

This test is still missing its expected test result on Win 10. This CL
sends another rebaseline.

See failure here for details:
https://build.chromium.org/p/chromium.webkit/builders/WebKit%20Win10

BUG= 618082 

Review-Url: https://codereview.chromium.org/2044393002
Cr-Commit-Position: refs/heads/master@{#398545}

[modify] https://crrev.com/67a46a72b12d0a556cf0ccec546b08be058771ea/third_party/WebKit/LayoutTests/TestExpectations

I have reverted my CL which conflicts with yours.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/b543c2dcaa099f117d2ae56867ed37a05f8807a1

commit b543c2dcaa099f117d2ae56867ed37a05f8807a1
Author: battre <battre@chromium.org>
Date: Wed Jun 08 14:38:03 2016

Revert of Mark printing/thead-repeats-at-top-of-each-page.html as failing on Win10 (patchset #1 id:1 of https://codereview.chromium.org/2049013002/ )

Reason for revert:
Trybots are unhappy and did not flag it in the CQ.

LayoutTests/TestExpectations:1329 Duplicate or ambiguous entry lines LayoutTests/TestExpectations:1075 and LayoutTests/TestExpectations:1329. printing/thead-repeats-at-top-of-each-page.html
LayoutTests/TestExpectations:1330 Duplicate or ambiguous entry lines LayoutTests/TestExpectations:1076 and LayoutTests/TestExpectations:1330. virtual/threaded/printing/thead-repeats-at-top-of-each-page.html

Original issue's description:
> Mark printing/thead-repeats-at-top-of-each-page.html as failing on Win10
>
> BUG= 618082 , 24826 
> TBR=robhogan@gmail.com
> NOTRY=true
>
> Committed: https://crrev.com/51ddb081cea0371a8dd329a7cfe2a6973f11b661
> Cr-Commit-Position: refs/heads/master@{#398540}

TBR=robhogan@gmail.com
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG= 618082 , 24826 

Review-Url: https://codereview.chromium.org/2049073002
Cr-Commit-Position: refs/heads/master@{#398547}

[modify] https://crrev.com/b543c2dcaa099f117d2ae56867ed37a05f8807a1/third_party/WebKit/LayoutTests/TestExpectations

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/18e991c5df9f8926212a26e6e7267199034a2ba5

commit 18e991c5df9f8926212a26e6e7267199034a2ba5
Author: Rebaseline Bot <blink-rebaseline-bot@chromium.org>
Date: Wed Jun 08 15:54:08 2016

Auto-rebaseline for r398545

https://chromium.googlesource.com/chromium/src/+/67a46a72b

BUG= 618082 
TBR=xidachen@chromium.org

Review URL: https://codereview.chromium.org/2043383002 .

Cr-Commit-Position: refs/heads/master@{#398574}

[modify] https://crrev.com/18e991c5df9f8926212a26e6e7267199034a2ba5/third_party/WebKit/LayoutTests/TestExpectations
[add] https://crrev.com/18e991c5df9f8926212a26e6e7267199034a2ba5/third_party/WebKit/LayoutTests/platform/win/printing/thead-repeats-at-top-of-each-page-expected.png
[modify] https://crrev.com/18e991c5df9f8926212a26e6e7267199034a2ba5/third_party/WebKit/LayoutTests/platform/win/printing/thead-repeats-at-top-of-each-page-expected.txt
[add] https://crrev.com/18e991c5df9f8926212a26e6e7267199034a2ba5/third_party/WebKit/LayoutTests/platform/win7/printing/thead-repeats-at-top-of-each-page-expected.txt

These two tests seem to fail on Win10 even after rebaseline:

https://build.chromium.org/p/chromium.webkit/builders/WebKit%20Win10/builds/11102

robhogan@: please have a look.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/7f797718e65758bc29758d1f8ecbea97aa241812

commit 7f797718e65758bc29758d1f8ecbea97aa241812
Author: xidachen <xidachen@chromium.org>
Date: Wed Jun 08 19:38:20 2016

Mark printing/thead-repeats-at-top-of-each-page.html as failure

printing/thead-repeats-at-top-of-each-page.html
virtual/threaded/printing/thead-repeats-at-top-of-each-page.html

fails on Win10 even after rebaseline

https://build.chromium.org/p/chromium.webkit/builders/WebKit%20Win10/builds/11102

BUG= 618082 
NOTRY=true
TBR=robhogan@gmail.com

Review-Url: https://codereview.chromium.org/2045013006
Cr-Commit-Position: refs/heads/master@{#398641}

[modify] https://crrev.com/7f797718e65758bc29758d1f8ecbea97aa241812/third_party/WebKit/LayoutTests/TestExpectations

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/9e97add117956e4d880a8d42fececee504040bc3

commit 9e97add117956e4d880a8d42fececee504040bc3
Author: Stefan Zager <szager@chromium.org>
Date: Tue Nov 21 20:58:08 2017

Fix win-specific baselines for printing layout test

The previous platform/win expected.png file was not a printing
layout.

Bug:  618082 
Change-Id: I73c5d69a4f5d45086d974178f2d21151f5bb10d5
Reviewed-on: https://chromium-review.googlesource.com/781980
Reviewed-by: Philip Rogers <pdr@chromium.org>
Commit-Queue: Stefan Zager <szager@chromium.org>
Cr-Commit-Position: refs/heads/master@{#518386}
[modify] https://crrev.com/9e97add117956e4d880a8d42fececee504040bc3/third_party/WebKit/LayoutTests/TestExpectations
[modify] https://crrev.com/9e97add117956e4d880a8d42fececee504040bc3/third_party/WebKit/LayoutTests/platform/win/printing/thead-repeats-at-top-of-each-page-expected.png
[modify] https://crrev.com/9e97add117956e4d880a8d42fececee504040bc3/third_party/WebKit/LayoutTests/platform/win/printing/thead-repeats-at-top-of-each-page-expected.txt
[delete] https://crrev.com/cf947e084cfb8f06bf8b75fa3bab4e3b90fda696/third_party/WebKit/LayoutTests/platform/win7/printing/thead-repeats-at-top-of-each-page-expected.png
[delete] https://crrev.com/cf947e084cfb8f06bf8b75fa3bab4e3b90fda696/third_party/WebKit/LayoutTests/platform/win7/printing/thead-repeats-at-top-of-each-page-expected.txt