Add Layout Test to check that color property works with all:{unset/inherit}

Add Layout Test to check that color property works with all:{unset/inherit}

This patch adds a layout test to ensure that the 'color' property works as
expected when used with `all:unset` or `all:inherit`.

BUG=420781
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=201881

[nainar1, 2015-09-04 07:17:54]

nainar@google.com changed reviewers:
+ timloh@chromium.org

[nainar1, 2015-09-04 07:17:54]

Hi,

Please take a look?

Thanks!

[Timothy Loh, 2015-09-07 01:30:05]

On 2015/09/04 07:17:54, nainar wrote:
> Hi,
> 
> Please take a look?
> 
> Thanks!

This doesn't actually test the case that was broken, can you make sure it's
tested?

[nainar1, 2015-09-07 07:15:10]

Could you please take a look now?

[Timothy Loh, 2015-09-07 07:55:18]

On 2015/09/07 07:15:10, nainar wrote:
> Could you please take a look now?

Usually red in a layout test indicates a failure. I would probably style the
parent elements as red and remove the text from them, and make the children divs
e.g. green and lightgreen.

[nainar1, 2015-09-08 00:04:03]

Have fixed the issues you asked for. Could you take a look now?

[Timothy Loh, 2015-09-08 00:19:43]

lgtm

[nainar1, 2015-09-08 00:19:58]

The CQ bit was checked by nainar@google.com

[commit-bot: I haz the power, 2015-09-08 00:20:02]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1330573003/40001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1330573003/40001

[nainar1, 2015-09-08 00:29:58]

nainar@google.com changed reviewers:
- nainar@google.com

[commit-bot: I haz the power, 2015-09-08 00:46:50]

Committed patchset #3 (id:40001) as
https://src.chromium.org/viewvc/blink?view=rev&revision=201881