Add metrics for intrinsic and min-intrinsic CSS values

Add metrics for intrinsic and min-intrinsic CSS values

Blink supports the unprefixed and nonstandard values |intrinsic| and
|min-intrinsic| when passed as:

 width: min-intrinsic | intrinsic

If we want to remove them or add them to a specification, use counter
data may be useful.

BUG=475104
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=193429

[davve, 2015-04-01 14:50:20]

davve@opera.com changed reviewers:
+ cbiesinger@chromium.org, esprehn@chromium.org

[davve, 2015-04-01 14:50:20]

Two old CSS values that we might be able to remove one day? Firefox doesn't
support them.

Should I be worried about performance regressions by just increasing the size of
CSSPropertyParser::validWidthOrHeight?

[rune, 2015-04-08 12:58:43]

On 2015/04/01 14:50:20, David Vest wrote:
> Two old CSS values that we might be able to remove one day? Firefox doesn't
> support them.
> 
> Should I be worried about performance regressions by just increasing the size
of
> CSSPropertyParser::validWidthOrHeight?

I don't think so, we'll hopefully go the CSSParserFastPaths route for the most
performance sensitive widths and heights.

LGTM, but please create a crbug and add to BUG= in the description.

[davve, 2015-04-08 17:53:49]

The CQ bit was checked by davve@opera.com

[davve, 2015-04-08 17:54:06]

The CQ bit was unchecked by davve@opera.com

[davve, 2015-04-09 06:30:39]

The CQ bit was checked by davve@opera.com

[davve, 2015-04-09 06:30:40]

The patchset sent to the CQ was uploaded after l-g-t-m from rune@opera.com
Link to the patchset: https://codereview.chromium.org/1051573003/#ps20001
(title: "Rebase")

[commit-bot: I haz the power, 2015-04-09 06:31:03]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1051573003/20001

[commit-bot: I haz the power, 2015-04-09 08:34:24]

Committed patchset #2 (id:20001) as
https://src.chromium.org/viewvc/blink?view=rev&revision=193429