Move the user agent styles sheets to blink_resources.grd (Part 1) with conditional includes

Move the user agent styles sheets to blink_resources.grd (Part 1) with conditional includes

This is continuation to earlier CL [1] with the conditional statements being added for
specific platform CSS file includes.

Part 1: https://codereview.chromium.org/436843004/
Part 2: https://codereview.chromium.org/422023008/
Part 3: https://codereview.chromium.org/438843004/

BUG=312586
NOTRY=true
TBR=jochen@chromium.org

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=179504

[vivekg, 2014-08-04 15:05:31]

PTAL, thank you

[jochen (gone - plz use gerrit), 2014-08-05 09:05:04]

lgtm

[vivekg, 2014-08-05 09:11:04]

The CQ bit was checked by vivekg@chromium.org

[commit-bot: I haz the power, 2014-08-05 09:12:04]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/vivek.vg@samsung.com/440683004/20001

[commit-bot: I haz the power, 2014-08-05 15:01:50]

FYI, CQ is re-trying this CL (attempt #1).
The failing builders are:
  win_blink_rel on tryserver.blink
(http://build.chromium.org/p/tryserver.blink/builders/win_blink_rel/builds/20883)

[vivekg, 2014-08-05 15:23:14]

The CQ bit was unchecked by vivekg@chromium.org

[vivekg, 2014-08-05 15:23:18]

The CQ bit was checked by vivekg@chromium.org

[commit-bot: I haz the power, 2014-08-05 15:23:59]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/vivek.vg@samsung.com/440683004/20001

[commit-bot: I haz the power, 2014-08-05 15:25:28]

Change committed as 179504