Chris is complaining about this too, raising priority.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/f78775a0c38ec507ee61f5e062151c3108c7a1fc

commit f78775a0c38ec507ee61f5e062151c3108c7a1fc
Author: pdr <pdr@chromium.org>
Date: Fri Oct 07 19:34:47 2016

Fix syntax of FlagExpectations/site-per-process

In preparation for linting all flag expectations files, this patch
fixes the syntax of FlagExpectations/site-per-process.

BUG= 644435 

Review-Url: https://codereview.chromium.org/2396303002
Cr-Commit-Position: refs/heads/master@{#423932}

[modify] https://crrev.com/f78775a0c38ec507ee61f5e062151c3108c7a1fc/third_party/WebKit/LayoutTests/FlagExpectations/site-per-process

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/a0cb91ee9abbd92a11248c4d9f0bd550e6ae773f

commit a0cb91ee9abbd92a11248c4d9f0bd550e6ae773f
Author: pdr <pdr@chromium.org>
Date: Fri Oct 07 19:39:25 2016

Fix syntax of FlagExpectations/enable-slimming-paint-v2

In preparation for linting all flag expectations files, this patch
fixes the syntax of FlagExpectations/enable-slimming-paint-v2.

BUG= 644435 

Review-Url: https://codereview.chromium.org/2398413003
Cr-Commit-Position: refs/heads/master@{#423933}

[modify] https://crrev.com/a0cb91ee9abbd92a11248c4d9f0bd550e6ae773f/third_party/WebKit/LayoutTests/FlagExpectations/enable-slimming-paint-v2

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/6cefa9cee91c95bcc5f00740c2fb495fa452ad0c

commit 6cefa9cee91c95bcc5f00740c2fb495fa452ad0c
Author: pdr <pdr@chromium.org>
Date: Fri Oct 07 19:40:21 2016

Fix syntax of FlagExpectations/root-layer-scrolls

In preparation for linting all flag expectations files, this patch
fixes the syntax of FlagExpectations/root-layer-scrolls.

BUG= 644435 

Review-Url: https://codereview.chromium.org/2402013002
Cr-Commit-Position: refs/heads/master@{#423934}

[modify] https://crrev.com/6cefa9cee91c95bcc5f00740c2fb495fa452ad0c/third_party/WebKit/LayoutTests/FlagExpectations/root-layer-scrolls

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/044de20a8ade9186461d790454431ca66a54b044

commit 044de20a8ade9186461d790454431ca66a54b044
Author: pdr <pdr@chromium.org>
Date: Fri Oct 07 19:45:48 2016

Fix syntax of FlagExpectations/enable-browser-side-navigation

In preparation for linting all flag expectations files, this patch
fixes the syntax of FlagExpectations/enable-browser-side-navigation.

BUG= 644435 

Review-Url: https://codereview.chromium.org/2400663005
Cr-Commit-Position: refs/heads/master@{#423940}

[modify] https://crrev.com/044de20a8ade9186461d790454431ca66a54b044/third_party/WebKit/LayoutTests/FlagExpectations/enable-browser-side-navigation

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/76b5bff8f195819fe17b2e0f773d0a5b427c75f5

commit 76b5bff8f195819fe17b2e0f773d0a5b427c75f5
Author: pdr <pdr@chromium.org>
Date: Fri Oct 07 21:56:50 2016

Fix syntax of enable-blink-features=slimmingPaintInvalidation

In preparation for linting all flag expectations files, this patch
fixes the syntax of
FlagExpectations/enable-blink-features=slimmingPaintInvalidation.

BUG= 644435 

Review-Url: https://codereview.chromium.org/2406513002
Cr-Commit-Position: refs/heads/master@{#423976}

[modify] https://crrev.com/76b5bff8f195819fe17b2e0f773d0a5b427c75f5/third_party/WebKit/LayoutTests/FlagExpectations/enable-blink-features=slimmingPaintInvalidation

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/788f3061e6fb55c35fdccfc42085a1b612b99223

commit 788f3061e6fb55c35fdccfc42085a1b612b99223
Author: pdr <pdr@chromium.org>
Date: Fri Oct 07 23:35:44 2016

Update lint-test-expectations to check on FlagExpectations

lint-test-expectations is the python script used to lint all test
expectations files, including TestExpectations, NeverFixTests, virtual
test suites, etc. This patch updates the linter to also check for
flag-specific expectations in the FlagExpectations/ directory.

BUG= 644435 

Review-Url: https://codereview.chromium.org/2397723006
Cr-Commit-Position: refs/heads/master@{#424014}

[modify] https://crrev.com/788f3061e6fb55c35fdccfc42085a1b612b99223/third_party/WebKit/Tools/Scripts/webkitpy/layout_tests/lint_test_expectations.py
[modify] https://crrev.com/788f3061e6fb55c35fdccfc42085a1b612b99223/third_party/WebKit/Tools/Scripts/webkitpy/layout_tests/lint_test_expectations_unittest.py
[modify] https://crrev.com/788f3061e6fb55c35fdccfc42085a1b612b99223/third_party/WebKit/Tools/Scripts/webkitpy/layout_tests/port/base.py
[modify] https://crrev.com/788f3061e6fb55c35fdccfc42085a1b612b99223/third_party/WebKit/Tools/Scripts/webkitpy/layout_tests/port/base_unittest.py