Reland of DevTools: require enabling CSS domain before running CSS.* commands.

Reland of DevTools: require enabling CSS domain before running CSS.* commands. (patchset #1 id:1 of https://codereview.chromium.org/2916283002/ )

Reason for revert:
This turned out not to be the culprit. Things just got slow.

Original issue's description:
> Revert of DevTools: require enabling CSS domain before running CSS.* commands. (patchset #3 id:40001 of https://codereview.chromium.org/2914663002/ )
> 
> Reason for revert:
> It causes layout test failures on Linux:
> https://uberchromegw.corp.google.com/i/chromium.webkit/builders/WebKit%20Linux%20Trusty%20MSAN/builds/1247
> 
> Original issue's description:
> > DevTools: require enabling CSS domain before running CSS.* commands.
> > 
> > BUG=727795
> > 
> > Review-Url: https://codereview.chromium.org/2914663002
> > Cr-Commit-Position: refs/heads/master@{#476130}
> > Committed: https://chromium.googlesource.com/chromium/src/+/1036888141c747519351828b10ae09984450d871
> 
> TBR=dgozman@chromium.org,pfeldman@chromium.org
> # Not skipping CQ checks because original CL landed more than 1 days ago.
> BUG=727795
> 
> Review-Url: https://codereview.chromium.org/2916283002
> Cr-Commit-Position: refs/heads/master@{#476608}
> Committed: https://chromium.googlesource.com/chromium/src/+/319e041f4fe3cda31cd3cee45f9cb76ab39f7854

TBR=dgozman@chromium.org,pfeldman@chromium.org,yoichio@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=727795
Review-Url: https://codereview.chromium.org/2919123002
Cr-Commit-Position: refs/heads/master@{#476756}
Committed: https://chromium.googlesource.com/chromium/src/+/588a6053b5ec770703cd908bb20b3ce4c7ff9ee0

[engedy, 2017-06-02 19:38:04]

The CQ bit was checked by engedy@chromium.org

[engedy, 2017-06-02 19:38:05]

Created Reland of DevTools: require enabling CSS domain before running CSS.*
commands.

[commit-bot: I haz the power, 2017-06-02 19:38:35]

CQ is trying da patch.

Follow status at:
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[engedy, 2017-06-02 19:38:56]

Tracking bug for the slowness:
https://bugs.chromium.org/p/chromium/issues/detail?id=729136

[commit-bot: I haz the power, 2017-06-02 19:38:57]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1496432284949370, "parent_rev":
"617fde26d470b3521f465971163b40566bd28520", "commit_rev":
"588a6053b5ec770703cd908bb20b3ce4c7ff9ee0"}

[commit-bot: I haz the power, 2017-06-02 19:39:15]

Description was changed from

==========
Reland of DevTools: require enabling CSS domain before running CSS.* commands.
(patchset #1 id:1 of https://codereview.chromium.org/2916283002/ )

Reason for revert:
This turned out not to be the culprit. Things just got slow.

Original issue's description:
> Revert of DevTools: require enabling CSS domain before running CSS.* commands.
(patchset #3 id:40001 of https://codereview.chromium.org/2914663002/ )
> 
> Reason for revert:
> It causes layout test failures on Linux:
>
https://uberchromegw.corp.google.com/i/chromium.webkit/builders/WebKit%20Linu...
> 
> Original issue's description:
> > DevTools: require enabling CSS domain before running CSS.* commands.
> > 
> > BUG=727795
> > 
> > Review-Url: https://codereview.chromium.org/2914663002
> > Cr-Commit-Position: refs/heads/master@{#476130}
> > Committed:
https://chromium.googlesource.com/chromium/src/+/1036888141c747519351828b10ae...
> 
> TBR=dgozman@chromium.org,pfeldman@chromium.org
> # Not skipping CQ checks because original CL landed more than 1 days ago.
> BUG=727795
> 
> Review-Url: https://codereview.chromium.org/2916283002
> Cr-Commit-Position: refs/heads/master@{#476608}
> Committed:
https://chromium.googlesource.com/chromium/src/+/319e041f4fe3cda31cd3cee45f9c...

TBR=dgozman@chromium.org,pfeldman@chromium.org,yoichio@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=727795
==========

to

==========
Reland of DevTools: require enabling CSS domain before running CSS.* commands.
(patchset #1 id:1 of https://codereview.chromium.org/2916283002/ )

Reason for revert:
This turned out not to be the culprit. Things just got slow.

Original issue's description:
> Revert of DevTools: require enabling CSS domain before running CSS.* commands.
(patchset #3 id:40001 of https://codereview.chromium.org/2914663002/ )
> 
> Reason for revert:
> It causes layout test failures on Linux:
>
https://uberchromegw.corp.google.com/i/chromium.webkit/builders/WebKit%20Linu...
> 
> Original issue's description:
> > DevTools: require enabling CSS domain before running CSS.* commands.
> > 
> > BUG=727795
> > 
> > Review-Url: https://codereview.chromium.org/2914663002
> > Cr-Commit-Position: refs/heads/master@{#476130}
> > Committed:
https://chromium.googlesource.com/chromium/src/+/1036888141c747519351828b10ae...
> 
> TBR=dgozman@chromium.org,pfeldman@chromium.org
> # Not skipping CQ checks because original CL landed more than 1 days ago.
> BUG=727795
> 
> Review-Url: https://codereview.chromium.org/2916283002
> Cr-Commit-Position: refs/heads/master@{#476608}
> Committed:
https://chromium.googlesource.com/chromium/src/+/319e041f4fe3cda31cd3cee45f9c...

TBR=dgozman@chromium.org,pfeldman@chromium.org,yoichio@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=727795

Review-Url: https://codereview.chromium.org/2919123002
Cr-Commit-Position: refs/heads/master@{#476756}
Committed:
https://chromium.googlesource.com/chromium/src/+/588a6053b5ec770703cd908bb20b...
==========

[commit-bot: I haz the power, 2017-06-02 19:39:17]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/588a6053b5ec770703cd908bb20b...