Revert of Assert sequence validity on non-thread-safe RefCount manipulations (2)

Revert of Assert sequence validity on non-thread-safe RefCount manipulations (2) (patchset #35 id:700001 of https://codereview.chromium.org/2666423002/ )

Reason for revert:
Speculative revert to see if this CL is the cause of the RenderWidgetHostViewChildFrameTest.ForwardsBeginFrameAcks failures on https://uberchromegw.corp.google.com/i/chromium.win/builders/Win%207%20Tests%20x64%20%281%29/builds/22400

Original issue's description:
> Assert sequence validity on non-thread-safe RefCount manipulations
> 
> This CL adds DCHECKs to non-thread-safe base::RefCount to trace racy
> ref count manipulations. A ref counted object is considered to be bound
> to a sequence if the count is more than one. After this CL, ref count
> manipulations to a sequenced-bound one cause DCHECK failure.
> 
> This CL also adds ScopedAllowCrossThreadRefCountAccess to opt out,
> and applies the opt-out as needed.
> 
> BUG=688072
> CQ_INCLUDE_TRYBOTS=master.tryserver.blink:linux_trusty_blink_rel;master.tryserver.chromium.android:android_optional_gpu_tests_rel;master.tryserver.chromium.linux:linux_optional_gpu_tests_rel;master.tryserver.chromium.mac:mac_optional_gpu_tests_rel;master.tryserver.chromium.win:win_optional_gpu_tests_rel
> 
> Review-Url: https://codereview.chromium.org/2666423002
> Cr-Commit-Position: refs/heads/master@{#460773}
> Committed: https://chromium.googlesource.com/chromium/src/+/f9a212dec0fec22e21d7f66ad1aa9414ed1dc068

TBR=gab@chromium.org,raymes@chromium.org,zmo@chromium.org,yzshen@chromium.org,danakj@chromium.org,tzik@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=688072
Review-Url: https://codereview.chromium.org/2783393002
Cr-Commit-Position: refs/heads/master@{#460859}
Committed: https://chromium.googlesource.com/chromium/src/+/4d5b2df34c2023956579d96e89aaaacf04e510d1

[wjmaclean, 2017-03-30 19:51:55]

The CQ bit was checked by wjmaclean@chromium.org

[wjmaclean, 2017-03-30 19:51:56]

Created Revert of Assert sequence validity on non-thread-safe RefCount
manipulations (2)

[commit-bot: I haz the power, 2017-03-30 19:52:44]

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, 2017-03-30 19:58:08]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1490903515772250, "parent_rev":
"d6d05e2a6461b0886140633e9a98a01e7c780dd5", "commit_rev":
"4d5b2df34c2023956579d96e89aaaacf04e510d1"}

[commit-bot: I haz the power, 2017-03-30 19:59:17]

Description was changed from

==========
Revert of Assert sequence validity on non-thread-safe RefCount manipulations (2)
(patchset #35 id:700001 of https://codereview.chromium.org/2666423002/ )

Reason for revert:
Speculative revert to see if this CL is the cause of the
RenderWidgetHostViewChildFrameTest.ForwardsBeginFrameAcks failures on
https://uberchromegw.corp.google.com/i/chromium.win/builders/Win%207%20Tests%...

Original issue's description:
> Assert sequence validity on non-thread-safe RefCount manipulations
> 
> This CL adds DCHECKs to non-thread-safe base::RefCount to trace racy
> ref count manipulations. A ref counted object is considered to be bound
> to a sequence if the count is more than one. After this CL, ref count
> manipulations to a sequenced-bound one cause DCHECK failure.
> 
> This CL also adds ScopedAllowCrossThreadRefCountAccess to opt out,
> and applies the opt-out as needed.
> 
> BUG=688072
>
CQ_INCLUDE_TRYBOTS=master.tryserver.blink:linux_trusty_blink_rel;master.tryserver.chromium.android:android_optional_gpu_tests_rel;master.tryserver.chromium.linux:linux_optional_gpu_tests_rel;master.tryserver.chromium.mac:mac_optional_gpu_tests_rel;master.tryserver.chromium.win:win_optional_gpu_tests_rel
> 
> Review-Url: https://codereview.chromium.org/2666423002
> Cr-Commit-Position: refs/heads/master@{#460773}
> Committed:
https://chromium.googlesource.com/chromium/src/+/f9a212dec0fec22e21d7f66ad1aa...

TBR=gab@chromium.org,raymes@chromium.org,zmo@chromium.org,yzshen@chromium.org...
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=688072
==========

to

==========
Revert of Assert sequence validity on non-thread-safe RefCount manipulations (2)
(patchset #35 id:700001 of https://codereview.chromium.org/2666423002/ )

Reason for revert:
Speculative revert to see if this CL is the cause of the
RenderWidgetHostViewChildFrameTest.ForwardsBeginFrameAcks failures on
https://uberchromegw.corp.google.com/i/chromium.win/builders/Win%207%20Tests%...

Original issue's description:
> Assert sequence validity on non-thread-safe RefCount manipulations
> 
> This CL adds DCHECKs to non-thread-safe base::RefCount to trace racy
> ref count manipulations. A ref counted object is considered to be bound
> to a sequence if the count is more than one. After this CL, ref count
> manipulations to a sequenced-bound one cause DCHECK failure.
> 
> This CL also adds ScopedAllowCrossThreadRefCountAccess to opt out,
> and applies the opt-out as needed.
> 
> BUG=688072
>
CQ_INCLUDE_TRYBOTS=master.tryserver.blink:linux_trusty_blink_rel;master.tryserver.chromium.android:android_optional_gpu_tests_rel;master.tryserver.chromium.linux:linux_optional_gpu_tests_rel;master.tryserver.chromium.mac:mac_optional_gpu_tests_rel;master.tryserver.chromium.win:win_optional_gpu_tests_rel
> 
> Review-Url: https://codereview.chromium.org/2666423002
> Cr-Commit-Position: refs/heads/master@{#460773}
> Committed:
https://chromium.googlesource.com/chromium/src/+/f9a212dec0fec22e21d7f66ad1aa...

TBR=gab@chromium.org,raymes@chromium.org,zmo@chromium.org,yzshen@chromium.org...
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=688072

Review-Url: https://codereview.chromium.org/2783393002
Cr-Commit-Position: refs/heads/master@{#460859}
Committed:
https://chromium.googlesource.com/chromium/src/+/4d5b2df34c2023956579d96e89aa...
==========

[commit-bot: I haz the power, 2017-03-30 19:59:19]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/4d5b2df34c2023956579d96e89aa...