globalCompositeOperation is ignored in strokeText, fillText.

globalCompositeOperation is ignored in strokeText, fillText.

We make sure of supporting globalCompositeOperation about strokeText, fillText.
This CL is fixing some bugs of globalCompositeOperation and adding relative tests.

BUG=117675, 351178
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=171756

[zino, 2014-04-15 08:09:42]

PTAL

[Justin Novosad, 2014-04-15 14:33:29]

On 2014/04/15 08:09:42, zino wrote:
> PTAL

lgtm

[zino, 2014-04-16 04:24:58]

The CQ bit was checked by jinho.bang@samsung.com

[commit-bot: I haz the power, 2014-04-16 04:25:12]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/jinho.bang@samsung.com/238793002/140001

[commit-bot: I haz the power, 2014-04-16 04:59:41]

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

[commit-bot: I haz the power, 2014-04-16 04:59:41]

Try jobs failed on following builders:
  tryserver.blink on linux_blink_rel

[zino, 2014-04-16 06:43:48]

The CQ bit was checked by jinho.bang@samsung.com

[commit-bot: I haz the power, 2014-04-16 06:44:04]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/jinho.bang@samsung.com/238793002/160001

[commit-bot: I haz the power, 2014-04-16 08:36:01]

Change committed as 171756