Removes "ui-sans" from the ChromeOS system UI default font list.

Removes "ui-sans" from the ChromeOS system UI default font list.

The ChromeOS system UI (rendered through HarfBuzz) now
relies on gfx::RenderText::CreateSkiaTypeface(), and
skia actually returns exactly same typeface for
'Noto Sans UI' and 'ui-sans' in the current configuration.
ui-sans is simply redundant.

BUG=444894
R=jshin@chromium.org

Committed: https://crrev.com/550404a8be2b84c686ac855204c737233292fd41
Cr-Commit-Position: refs/heads/master@{#313189}

[Jun Mukai, 2015-01-20 21:23:22]

Jungshik, could you take a look?
Apart from the performance reason I wrote in the CL comment, I've noticed that
ui-sans doesn't do anything in our current code base because
RenderText::CreateSkiaTypeface() returns the exactly same typeface for "Noto
Sans UI" and "ui-sans", which means we don't have to have "ui-sans" at all.

[Jun Mukai, 2015-01-26 22:38:15]

ping?  Jungshik, could you review this?

[jungshik at Google, 2015-01-27 00:25:29]

On 2015/01/20 21:23:22, Jun Mukai wrote:
> Jungshik, could you take a look?
> Apart from the performance reason I wrote in the CL comment, I've noticed that
> ui-sans doesn't do anything in our current code base because
> RenderText::CreateSkiaTypeface() returns the exactly same typeface for "Noto
> Sans UI" and "ui-sans", which means we don't have to have "ui-sans" at all.

Thank you for finding that out. This CL is LGTM. 

In the meantime, I'll file a new bug to utilize 'ui-san' as well as an upstream
bug against fontconfig. The reason for 'ui-sans' is that a number of SE Asian
and S. Asian scripts, we need a separate
UI sans font distinct from regular sans-serif (for body/document) because
body/document fonts are too tall to fit inside UI elements (e.g. omnibox,
Find-in-page, etc)

[Jun Mukai, 2015-01-27 00:27:00]

The CQ bit was checked by mukai@chromium.org

[commit-bot: I haz the power, 2015-01-27 00:27:50]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/823003002/1

[commit-bot: I haz the power, 2015-01-27 01:22:33]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-01-27 01:23:32]

Patchset 1 (id:??) landed as
https://crrev.com/550404a8be2b84c686ac855204c737233292fd41
Cr-Commit-Position: refs/heads/master@{#313189}