Introduce WebTaskRunner Patch 5/5

Introduce WebTaskRunner Patch 5/5

Remove obsolete WebThread::Task class.

Patch 1: https://codereview.chromium.org/1325073002
Patch 2: https://codereview.chromium.org/1308183005
Patch 3: https://codereview.chromium.org/1303153005
Patch 4: https://codereview.chromium.org/1309423004

BUG=510398, 497761
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=201812

[alex clarke (OOO till 29th), 2015-09-02 12:35:31]

alexclarke@chromium.org changed reviewers:
+ skyostil@chromium.org

[alex clarke (OOO till 29th), 2015-09-02 13:36:20]

alexclarke@chromium.org changed reviewers:
+ mkwst@chromium.org

[alex clarke (OOO till 29th), 2015-09-02 13:36:20]

mkwst@chromium.org: Can I please have an OWNERS review.

[Sami, 2015-09-02 14:57:12]

Non-owner lgtm.

[Mike West, 2015-09-03 08:21:38]

LGTM.

[alex clarke (OOO till 29th), 2015-09-04 17:11:37]

The CQ bit was checked by alexclarke@chromium.org

[alex clarke (OOO till 29th), 2015-09-04 17:11:37]

The patchset sent to the CQ was uploaded after l-g-t-m from mkwst@chromium.org,
skyostil@chromium.org
Link to the patchset: https://codereview.chromium.org/1310253009/#ps20001
(title: "Remove the postTask and postDelayedTask too")

[commit-bot: I haz the power, 2015-09-04 17:11:55]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1310253009/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1310253009/20001

[commit-bot: I haz the power, 2015-09-04 18:18:09]

Committed patchset #2 (id:20001) as
https://src.chromium.org/viewvc/blink?view=rev&revision=201812