cc: Skip analysis for narrow layers.

cc: Skip analysis for narrow layers.

This patch ensures that we skip analysis for narrow layers. These layers
are unlikely to have solid color, and we shouldn't spend time analyzing
them. Additionally, we need to be cautious and set has_text to be true
by default, since for tiles that skipped analysis, we have to assume
that they have text.

(original CL: https://codereview.chromium.org/213093003/)

R=reveman, alokp@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=261794

[vmpstr, 2014-04-03 17:51:11]

Hey, can you take a look at this? I've been trying to land this via
https://codereview.chromium.org/213093003/ for a week now, but I think
something's just wrong with that CL and CQ is not happy. I'm hoping creating a
new CL will just fix it.

[alokp, 2014-04-03 17:56:44]

lgtm

[vmpstr, 2014-04-03 22:19:15]

The CQ bit was checked by vmpstr@chromium.org

[commit-bot: I haz the power, 2014-04-03 22:19:51]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/vmpstr@chromium.org/224333002/1

[commit-bot: I haz the power, 2014-04-03 23:38:57]

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

[commit-bot: I haz the power, 2014-04-03 23:38:57]

Try jobs failed on following builders:
  tryserver.chromium on linux_chromium_chromeos_rel

[vmpstr, 2014-04-04 00:01:38]

The CQ bit was checked by vmpstr@chromium.org

[commit-bot: I haz the power, 2014-04-04 00:02:14]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/vmpstr@chromium.org/224333002/1

[commit-bot: I haz the power, 2014-04-04 00:08:09]

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

[commit-bot: I haz the power, 2014-04-04 00:08:09]

Try jobs failed on following builders:
  tryserver.chromium on linux_chromium_chromeos_rel

[vmpstr, 2014-04-04 17:09:39]

The CQ bit was checked by vmpstr@chromium.org

[commit-bot: I haz the power, 2014-04-04 17:10:22]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/vmpstr@chromium.org/224333002/1

[commit-bot: I haz the power, 2014-04-04 18:25:22]

Change committed as 261794