Use the stateless GC::fillRect variant when possible.

Use the stateless GC::fillRect variant when possible.

This reduces deferred paint save pressure and allows us to remove a
couple of GC state savers.

R=schenney@chromium.org,senorblanco@chromium.org
TBR=esprehn@chromium.org
BUG=424655
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=184318

[Stephen White, 2014-10-22 15:21:17]

LGTM

[f(malita), 2014-10-22 17:27:16]

The CQ bit was checked by fmalita@chromium.org

[commit-bot: I haz the power, 2014-10-22 17:27:58]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/671813002/20001

[commit-bot: I haz the power, 2014-10-22 18:11:59]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2014-10-22 18:12:00]

Try jobs failed on following builders:
  blink_presubmit on tryserver.blink
(http://build.chromium.org/p/tryserver.blink/builders/blink_presubmit/builds/1...)

[f(malita), 2014-10-22 18:22:59]

fmalita@chromium.org changed reviewers:
+ esprehn@chromium.org

[f(malita), 2014-10-22 18:24:06]

On 2014/10/22 18:12:00, I haz the power (commit-bot) wrote:
> Try jobs failed on following builders:
>   blink_presubmit on tryserver.blink
>
(http://build.chromium.org/p/tryserver.blink/builders/blink_presubmit/builds/1...)

+esprehn for web/

[f(malita), 2014-10-24 00:29:06]

The CQ bit was checked by fmalita@chromium.org

[commit-bot: I haz the power, 2014-10-24 00:30:00]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/671813002/20001

[commit-bot: I haz the power, 2014-10-24 00:35:11]

Committed patchset #2 (id:20001) as 184318

[esprehn, 2014-10-24 00:36:27]

lgtm