Revert of Have CanvasAsyncBlobCreator's delayed task keep a weak |this| also.

Revert of Have CanvasAsyncBlobCreator's delayed task keep a weak |this| also. (patchset #1 id:1 of https://codereview.chromium.org/2069533002/ )

Reason for revert:
This CL makes blink_perf.canvas fail on perf bots. See the bug for details.

BUG=620043
Original issue's description:
> Have CanvasAsyncBlobCreator's delayed task keep a weak |this| also.
>
> Followup r399445 and dually have the delayed task that's
> posted to check if the idle task has gone ahead, also keep
> a weak |this| reference. The non-winning CanvasAsyncBlobCreator
> posted main thread tasks can safely be cancelled & dropped if
> a GC happens to go ahead.
>
> R=
> BUG=
>
> Committed: https://crrev.com/c0db5076c1c2b626aec53e2c8023b79e27820959
> Cr-Commit-Position: refs/heads/master@{#399675}

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

Committed: https://crrev.com/b70b7547d75b6e121972c99cc6eaab6e116f2e88
Cr-Commit-Position: refs/heads/master@{#399775}

[Zhen Wang, 2016-06-14 20:19:32]

The CQ bit was checked by zhenw@chromium.org

[Zhen Wang, 2016-06-14 20:19:32]

Created Revert of Have CanvasAsyncBlobCreator's delayed task keep a weak |this|
also.

[commit-bot: I haz the power, 2016-06-14 20:19:56]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/2062243003/1

[commit-bot: I haz the power, 2016-06-14 20:20:40]

Description was changed from

==========
Revert of Have CanvasAsyncBlobCreator's delayed task keep a weak |this| also.
(patchset #1 id:1 of https://codereview.chromium.org/2069533002/ )

Reason for revert:
This CL makes blink_perf.canvas fail on perf bots. See the bug for details.

BUG=620043

Original issue's description:
> Have CanvasAsyncBlobCreator's delayed task keep a weak |this| also.
> 
> Followup r399445 and dually have the delayed task that's
> posted to check if the idle task has gone ahead, also keep
> a weak |this| reference. The non-winning CanvasAsyncBlobCreator
> posted main thread tasks can safely be cancelled & dropped if
> a GC happens to go ahead.
> 
> R=
> BUG=
> 
> Committed: https://crrev.com/c0db5076c1c2b626aec53e2c8023b79e27820959
> Cr-Commit-Position: refs/heads/master@{#399675}

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

to

==========
Revert of Have CanvasAsyncBlobCreator's delayed task keep a weak |this| also.
(patchset #1 id:1 of https://codereview.chromium.org/2069533002/ )

Reason for revert:
This CL makes blink_perf.canvas fail on perf bots. See the bug for details.

BUG=620043

Original issue's description:
> Have CanvasAsyncBlobCreator's delayed task keep a weak |this| also.
> 
> Followup r399445 and dually have the delayed task that's
> posted to check if the idle task has gone ahead, also keep
> a weak |this| reference. The non-winning CanvasAsyncBlobCreator
> posted main thread tasks can safely be cancelled & dropped if
> a GC happens to go ahead.
> 
> R=
> BUG=
> 
> Committed: https://crrev.com/c0db5076c1c2b626aec53e2c8023b79e27820959
> Cr-Commit-Position: refs/heads/master@{#399675}

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

[commit-bot: I haz the power, 2016-06-14 20:20:41]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-06-14 20:22:07]

Description was changed from

==========
Revert of Have CanvasAsyncBlobCreator's delayed task keep a weak |this| also.
(patchset #1 id:1 of https://codereview.chromium.org/2069533002/ )

Reason for revert:
This CL makes blink_perf.canvas fail on perf bots. See the bug for details.

BUG=620043

Original issue's description:
> Have CanvasAsyncBlobCreator's delayed task keep a weak |this| also.
> 
> Followup r399445 and dually have the delayed task that's
> posted to check if the idle task has gone ahead, also keep
> a weak |this| reference. The non-winning CanvasAsyncBlobCreator
> posted main thread tasks can safely be cancelled & dropped if
> a GC happens to go ahead.
> 
> R=
> BUG=
> 
> Committed: https://crrev.com/c0db5076c1c2b626aec53e2c8023b79e27820959
> Cr-Commit-Position: refs/heads/master@{#399675}

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

to

==========
Revert of Have CanvasAsyncBlobCreator's delayed task keep a weak |this| also.
(patchset #1 id:1 of https://codereview.chromium.org/2069533002/ )

Reason for revert:
This CL makes blink_perf.canvas fail on perf bots. See the bug for details.

BUG=620043

Original issue's description:
> Have CanvasAsyncBlobCreator's delayed task keep a weak |this| also.
>
> Followup r399445 and dually have the delayed task that's
> posted to check if the idle task has gone ahead, also keep
> a weak |this| reference. The non-winning CanvasAsyncBlobCreator
> posted main thread tasks can safely be cancelled & dropped if
> a GC happens to go ahead.
>
> R=
> BUG=
>
> Committed: https://crrev.com/c0db5076c1c2b626aec53e2c8023b79e27820959
> Cr-Commit-Position: refs/heads/master@{#399675}

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

Committed: https://crrev.com/b70b7547d75b6e121972c99cc6eaab6e116f2e88
Cr-Commit-Position: refs/heads/master@{#399775}
==========

[commit-bot: I haz the power, 2016-06-14 20:22:08]

Patchset 1 (id:??) landed as
https://crrev.com/b70b7547d75b6e121972c99cc6eaab6e116f2e88
Cr-Commit-Position: refs/heads/master@{#399775}

[haraken, 2016-06-14 23:42:25]

LGTM

[sof, 2016-06-15 07:03:27]

lgtm, thanks for reverting.