Revert of Use Unthrottled instead of DOMManipulation in HTMLLinkElement/HTMLStyleElement

Revert of Use Unthrottled instead of DOMManipulation in HTMLLinkElement/HTMLStyleElement (patchset #3 id:40001 of https://codereview.chromium.org/2596343002/ )

Reason for revert:
This CL is not needed for M-57 and thus
reverting before M-57 branch cut as planned.


Original issue's description:
> Use Unthrottled instead of DOMManipulation in HTMLLinkElement/HTMLStyleElement
> 
> The async tasks for HTMLLinkElement/HTMLStyleElement::dispatchPendingEvent()
> are on the critical paths to show popup windows for extensions, but
> the DOMManipulation task runner is throttled because the tasks are executed
> before the popup windows become visible, causing delay in showing popups.
> 
> The scheduler is fixed by [1], but [1] is not merged to M-56.
> This CL makes a mergeable workaround by using TaskType::Unthrottled for these
> tasks to fix the issue on M-56.
> 
> [1] https://codereview.chromium.org/2620743002
> 
> BUG=649942
> 
> Review-Url: https://codereview.chromium.org/2596343002
> Cr-Commit-Position: refs/heads/master@{#444559}
> Committed: https://chromium.googlesource.com/chromium/src/+/812f90689e6637a5a4f13151dba661464716e29e

TBR=haraken@chromium.org,alexclarke@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=649942
Review-Url: https://codereview.chromium.org/2644103005
Cr-Commit-Position: refs/heads/master@{#444851}
Committed: https://chromium.googlesource.com/chromium/src/+/1a7fcf622020ce0685a1a81a227d6b67650f8251

[hiroshige, 2017-01-19 21:48:59]

The CQ bit was checked by hiroshige@chromium.org

[hiroshige, 2017-01-19 21:48:59]

Created Revert of Use Unthrottled instead of DOMManipulation in
HTMLLinkElement/HTMLStyleElement

[commit-bot: I haz the power, 2017-01-19 21:49:43]

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

[commit-bot: I haz the power, 2017-01-19 21:50:22]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1484862539531130, "parent_rev":
"1ee51d53b10f8d2688a225d6cbd33dfdf8965403", "commit_rev":
"1a7fcf622020ce0685a1a81a227d6b67650f8251"}

[commit-bot: I haz the power, 2017-01-19 21:50:55]

Description was changed from

==========
Revert of Use Unthrottled instead of DOMManipulation in
HTMLLinkElement/HTMLStyleElement (patchset #3 id:40001 of
https://codereview.chromium.org/2596343002/ )

Reason for revert:
This CL is not needed for M-57 and thus
reverting before M-57 branch cut as planned.


Original issue's description:
> Use Unthrottled instead of DOMManipulation in HTMLLinkElement/HTMLStyleElement
> 
> The async tasks for HTMLLinkElement/HTMLStyleElement::dispatchPendingEvent()
> are on the critical paths to show popup windows for extensions, but
> the DOMManipulation task runner is throttled because the tasks are executed
> before the popup windows become visible, causing delay in showing popups.
> 
> The scheduler is fixed by [1], but [1] is not merged to M-56.
> This CL makes a mergeable workaround by using TaskType::Unthrottled for these
> tasks to fix the issue on M-56.
> 
> [1] https://codereview.chromium.org/2620743002
> 
> BUG=649942
> 
> Review-Url: https://codereview.chromium.org/2596343002
> Cr-Commit-Position: refs/heads/master@{#444559}
> Committed:
https://chromium.googlesource.com/chromium/src/+/812f90689e6637a5a4f13151dba6...

TBR=haraken@chromium.org,alexclarke@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=649942
==========

to

==========
Revert of Use Unthrottled instead of DOMManipulation in
HTMLLinkElement/HTMLStyleElement (patchset #3 id:40001 of
https://codereview.chromium.org/2596343002/ )

Reason for revert:
This CL is not needed for M-57 and thus
reverting before M-57 branch cut as planned.


Original issue's description:
> Use Unthrottled instead of DOMManipulation in HTMLLinkElement/HTMLStyleElement
> 
> The async tasks for HTMLLinkElement/HTMLStyleElement::dispatchPendingEvent()
> are on the critical paths to show popup windows for extensions, but
> the DOMManipulation task runner is throttled because the tasks are executed
> before the popup windows become visible, causing delay in showing popups.
> 
> The scheduler is fixed by [1], but [1] is not merged to M-56.
> This CL makes a mergeable workaround by using TaskType::Unthrottled for these
> tasks to fix the issue on M-56.
> 
> [1] https://codereview.chromium.org/2620743002
> 
> BUG=649942
> 
> Review-Url: https://codereview.chromium.org/2596343002
> Cr-Commit-Position: refs/heads/master@{#444559}
> Committed:
https://chromium.googlesource.com/chromium/src/+/812f90689e6637a5a4f13151dba6...

TBR=haraken@chromium.org,alexclarke@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=649942

Review-Url: https://codereview.chromium.org/2644103005
Cr-Commit-Position: refs/heads/master@{#444851}
Committed:
https://chromium.googlesource.com/chromium/src/+/1a7fcf622020ce0685a1a81a227d...
==========

[commit-bot: I haz the power, 2017-01-19 21:50:56]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/1a7fcf622020ce0685a1a81a227d...

[haraken, 2017-01-20 00:08:19]

LGTM