Implement unicode bidi P2 and P3 rules in BidiResolver

In blink we have two unicode bidi P2 and P3[1] rules implementations(One in RenderBlockLineLayout
and other one in StringImpl). The purpose of this patch is moving those
implementations to BidiResolver to avoid code duplication.

[1] http://www.unicode.org/reports/tr9/#The_Paragraph_Level

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=158245

[leviw_travelin_and_unemployed, 2013-09-23 23:07:58]

This is great work! lgtm!

[commit-bot: I haz the power, 2013-09-24 00:30:42]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/igor.o@sisa.samsung.com/23456046/1

[commit-bot: I haz the power, 2013-09-24 00:57:55]

Retried try job too often on blink_presubmit for step(s) presubmit
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=blink_pres...

[esprehn, 2013-09-24 03:37:18]

What is a P2 or P3 rule?

[leviw_travelin_and_unemployed, 2013-09-24 03:46:56]

Good point. It's from http://www.unicode.org/reports/tr9/ but it belongs in the
description.

[leviw_travelin_and_unemployed, 2013-09-24 03:47:08]

(Please update it as such before landing)

[leviw_travelin_and_unemployed, 2013-09-24 04:04:54]

On 2013/09/24 03:47:08, Levi wrote:
> (Please update it as such before landing)

I see you updated the title. Please put a link in the description as well.

[tkent, 2013-09-24 04:05:35]

wtf LGTM.

Please add a specification URL to the description.

[leviw_travelin_and_unemployed, 2013-09-24 04:11:13]

That's the first "wtf LGTM" I've seen :)

[commit-bot: I haz the power, 2013-09-24 04:11:35]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/igor.o@sisa.samsung.com/23456046/1

[commit-bot: I haz the power, 2013-09-24 05:58:15]

Change committed as 158245