Change default Japanese fonts on OS X from Pro to ProN

Change default Japanese fonts on OS X from Pro to ProN

OS X has contained Hiragino Kaku Gothic/Mincho ProN fonts which adapt JIS X 0213:2004 glyph forms and used them since 10.5. This CL makes Chromium use ProN fonts instead of Pro fonts.

This is in line with Firefox and Safari.

BUG=447843
TEST=On OS X, ProN fonts are used (per dom inspector).
data:text/html,<ul lang="ja"><li>&#x845b;<li style="font-family:serif">&#x845b;<li style="font-family:sans-serif">&#x845b;

Committed: https://crrev.com/d659b2a80d5b0afefcc667f6b522f54a1b0b3eff
Cr-Commit-Position: refs/heads/master@{#321322}

[Takeshi Kurosawa, 2015-02-14 04:56:09]

taken.spc@gmail.com changed reviewers:
+ jshin@chromium.org

[jungshik at Google, 2015-02-17 21:12:49]

LGTM ! Thanks

[Takeshi Kurosawa, 2015-02-22 12:47:14]

On 2015/02/17 21:12:49, Jungshik at google wrote:
> LGTM ! Thanks

As I don't have commit access, I would like someone to commit this.
Please let me know if there are any problems.

[jungshik at Google, 2015-03-19 08:10:30]

The CQ bit was checked by jshin@chromium.org

[commit-bot: I haz the power, 2015-03-19 08:10:43]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/912263002/1

[commit-bot: I haz the power, 2015-03-19 09:46:44]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-03-19 09:47:08]

Patchset 1 (id:??) landed as
https://crrev.com/d659b2a80d5b0afefcc667f6b522f54a1b0b3eff
Cr-Commit-Position: refs/heads/master@{#321322}