Revert of RequestIdleCallback: Avoid retaining ScriptedIdleTaskController while a cancelled...

Revert of RequestIdleCallback: Avoid retaining ScriptedIdleTaskController while a cancelled timeout is pending (patchset #2 id:20001 of https://codereview.chromium.org/1808643003/ )

Reason for revert:
Closed tree.

Original issue's description:
> RequestIdleCallback: Avoid retaining ScriptedIdleTaskController while a cancelled timeout is pending
>
> Ensure that ScriptedIdleTaskController does not get unnecessarily retained by a cancelled timeout task if the
> idle task has been triggered, but the document has gone away.
>
> BUG=595155
>
> Committed: https://crrev.com/82f18cd2a7b718c4d5356222017d9855a53eb6f3
> Cr-Commit-Position: refs/heads/master@{#381489}

TBR=esprehn@chromium.org,rmcilroy@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=595155
Committed: https://crrev.com/652dd3c14876e7b3618742e829d7b3c5522aaf2e
Cr-Commit-Position: refs/heads/master@{#381497}

[fgorski, 2016-03-16 18:14:09]

Created Revert of RequestIdleCallback: Avoid retaining
ScriptedIdleTaskController while a cancelled timeout is pending

[commit-bot: I haz the power, 2016-03-16 18:17:10]

Description was changed from

==========
Revert of RequestIdleCallback: Avoid retaining ScriptedIdleTaskController while
a cancelled timeout is pending (patchset #2 id:20001 of
https://codereview.chromium.org/1808643003/ )

Reason for revert:
Closed tree.

Original issue's description:
> RequestIdleCallback: Avoid retaining ScriptedIdleTaskController while a
cancelled timeout is pending
> 
> Ensure that ScriptedIdleTaskController does not get unnecessarily retained by
a cancelled timeout task if the
> idle task has been triggered, but the document has gone away.
> 
> BUG=595155
> 
> Committed: https://crrev.com/82f18cd2a7b718c4d5356222017d9855a53eb6f3
> Cr-Commit-Position: refs/heads/master@{#381489}

TBR=esprehn@chromium.org,rmcilroy@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=595155
==========

to

==========
Revert of RequestIdleCallback: Avoid retaining ScriptedIdleTaskController while
a cancelled timeout is pending (patchset #2 id:20001 of
https://codereview.chromium.org/1808643003/ )

Reason for revert:
Closed tree.

Original issue's description:
> RequestIdleCallback: Avoid retaining ScriptedIdleTaskController while a
cancelled timeout is pending
>
> Ensure that ScriptedIdleTaskController does not get unnecessarily retained by
a cancelled timeout task if the
> idle task has been triggered, but the document has gone away.
>
> BUG=595155
>
> Committed: https://crrev.com/82f18cd2a7b718c4d5356222017d9855a53eb6f3
> Cr-Commit-Position: refs/heads/master@{#381489}

TBR=esprehn@chromium.org,rmcilroy@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=595155

Committed: https://crrev.com/652dd3c14876e7b3618742e829d7b3c5522aaf2e
Cr-Commit-Position: refs/heads/master@{#381497}
==========

[fgorski, 2016-03-16 18:30:09]

Here is a link to bot failure:
https://build.chromium.org/p/chromium.webkit/builders/WebKit%20Linux%20non-Oi...