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

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}

[sof, 2016-06-14 08:17:21]

sigbjornf@opera.com changed reviewers:
+ haraken@chromium.org

[sof, 2016-06-14 08:17:22]

please take a look.

my bad, I should have realized the need for this dual case while handling
https://codereview.chromium.org/2060153002/

Addresses leaks
https://storage.googleapis.com/chromium-layout-test-archives/WebKit_Linux_Lea...

[haraken, 2016-06-14 08:20:09]

LGTM

[sof, 2016-06-14 08:22:03]

The CQ bit was checked by sigbjornf@opera.com

[commit-bot: I haz the power, 2016-06-14 08:22:12]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/2069533002/1

[commit-bot: I haz the power, 2016-06-14 09:53:56]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-06-14 09:56:29]

Description was changed from

==========
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=
==========

to

==========
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}
==========

[commit-bot: I haz the power, 2016-06-14 09:56:30]

Patchset 1 (id:??) landed as
https://crrev.com/c0db5076c1c2b626aec53e2c8023b79e27820959
Cr-Commit-Position: refs/heads/master@{#399675}

[Zhen Wang, 2016-06-14 20:19:31]

A revert of this CL (patchset #1 id:1) has been created in
https://codereview.chromium.org/2062243003/ by zhenw@chromium.org.

The reason for reverting is: This CL makes blink_perf.canvas fail on perf bots.
See the bug for details.

BUG=620043.