The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/0ad2dca465ede4f0bef9a4ff5f5acc04da4979a1

commit 0ad2dca465ede4f0bef9a4ff5f5acc04da4979a1
Author: tkent <tkent@chromium.org>
Date: Fri May 20 03:51:07 2016

Count usage of :read-only and :read-write CSS selectors.

This CL has no user-visible behavior changes.

BUG= 613378 
TBR=isherman@chromium.org

Review-Url: https://codereview.chromium.org/1999493003
Cr-Commit-Position: refs/heads/master@{#394989}

[modify] https://crrev.com/0ad2dca465ede4f0bef9a4ff5f5acc04da4979a1/third_party/WebKit/Source/core/css/parser/CSSSelectorParser.cpp
[modify] https://crrev.com/0ad2dca465ede4f0bef9a4ff5f5acc04da4979a1/third_party/WebKit/Source/core/frame/UseCounter.h
[modify] https://crrev.com/0ad2dca465ede4f0bef9a4ff5f5acc04da4979a1/tools/metrics/histograms/histograms.xml

Your change meets the bar and is auto-approved for M52 (branch: 2743)

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/e5ad0fae0d70758cda6954ea278b776aac4089e2

commit e5ad0fae0d70758cda6954ea278b776aac4089e2
Author: Kent Tamura <tkent@chromium.org>
Date: Mon May 23 00:42:44 2016

Merge "Count usage of :read-only and :read-write CSS selectors." to M52

This CL has no user-visible behavior changes.

BUG= 613378 
TBR=isherman@chromium.org

Review-Url: https://codereview.chromium.org/1999493003
Cr-Commit-Position: refs/heads/master@{#394989}
(cherry picked from commit 0ad2dca465ede4f0bef9a4ff5f5acc04da4979a1)

Review URL: https://codereview.chromium.org/1997283002 .

Cr-Commit-Position: refs/branch-heads/2743@{#2}
Cr-Branched-From: 2b3ae3b8090361f8af5a611712fc1a5ab2de53cb-refs/heads/master@{#394939}

[modify] https://crrev.com/e5ad0fae0d70758cda6954ea278b776aac4089e2/third_party/WebKit/Source/core/css/parser/CSSSelectorParser.cpp
[modify] https://crrev.com/e5ad0fae0d70758cda6954ea278b776aac4089e2/third_party/WebKit/Source/core/frame/UseCounter.h
[modify] https://crrev.com/e5ad0fae0d70758cda6954ea278b776aac4089e2/tools/metrics/histograms/histograms.xml