Fix non-<number> calcs being accepted as numbers

Fix non-<number> calcs being accepted as numbers

This patch fixes a missing check in CalcParser::consumeNumberRaw for the
CalcNumber category. This was causing non-<number> calcs to be accepted
as numbers (which caused problems in flex where <number> and <length>
can be used in the same shorthand, e.g. flex: calc(10px + 50%) 1 2)

BUG=559513, 499780
Committed: https://crrev.com/42ee07bfde71224b71dd8cbe5f5bd02aa87e9d35
Cr-Commit-Position: refs/heads/master@{#361070}

[Timothy Loh, 2015-11-23 05:27:31]

timloh@chromium.org changed reviewers:
+ alancutter@chromium.org

[alancutter (OOO until 2018), 2015-11-23 05:34:32]

lgtm

[Timothy Loh, 2015-11-23 05:35:00]

The CQ bit was checked by timloh@chromium.org

[commit-bot: I haz the power, 2015-11-23 05:35:11]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1464253002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1464253002/1

[commit-bot: I haz the power, 2015-11-23 06:36:07]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-11-23 06:36:43]

Patchset 1 (id:??) landed as
https://crrev.com/42ee07bfde71224b71dd8cbe5f5bd02aa87e9d35
Cr-Commit-Position: refs/heads/master@{#361070}