Don't allow creating a profile with an empty name in chrome://settings

Don't allow creating a profile with an empty name in chrome://settings

This is something I missed in https://codereview.chromium.org/532023003

BUG=413116
TEST=Go to chrome://settings and create a new profile. You should not be
able to save a name that's all spaces.

Committed: https://crrev.com/2c8708ccafd15405e23d1ad4b3bb5c1adfb2a1f3
Cr-Commit-Position: refs/heads/master@{#295064}

[noms (inactive), 2014-09-11 15:22:25]

noms@chromium.org changed reviewers:
+ dbeam@chromium.org

[noms (inactive), 2014-09-11 15:22:25]

Hi Dan,

I missed setting a no-spaces-allowed pattern on the the new profile name text
input in https://codereview.chromium.org/532023003/. This fixes that. Please
take a look.

[Dan Beam, 2014-09-11 17:54:17]

lgtm but see previous review (https://codereview.chromium.org/532023003/)

[noms (inactive), 2014-09-15 21:11:58]

Added the comments from https://codereview.chromium.org/532023003/

[noms (inactive), 2014-09-16 13:57:30]

The CQ bit was checked by noms@chromium.org

[commit-bot: I haz the power, 2014-09-16 13:58:38]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patchset/562233002/40001

[commit-bot: I haz the power, 2014-09-16 14:52:57]

Committed patchset #3 (id:40001) as e0bf2bd1e88aec46d3703f47f4bea04cf57617e9

[commit-bot: I haz the power, 2014-09-16 15:01:24]

Patchset 3 (id:??) landed as
https://crrev.com/2c8708ccafd15405e23d1ad4b3bb5c1adfb2a1f3
Cr-Commit-Position: refs/heads/master@{#295064}