Revert of GN: Specify grit generated output paths to be the same as gyp's.

Revert of GN: Specify grit generated output paths to be the same as gyp's. (patchset #1 of https://codereview.chromium.org/454253004/)

Reason for revert:
Broke GN compile and try jobs

http://build.chromium.org/p/chromium.webkit/builders/Linux%20GN

Original issue's description:
> GN: Specify grit generated output paths to be the same as gyp's.
> 
> BUG=401588
> 
> Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=289149

TBR=brettw@chromium.org,jamescook@chromium.org,yoz@chromium.org,thestig@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=401588
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=289209

[Timothy Loh, 2014-08-13 07:20:17]

Created Revert of GN: Specify grit generated output paths to be the same as
gyp's.

[commit-bot: I haz the power, 2014-08-13 07:22:19]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/timloh@chromium.org/461213003/1

[commit-bot: I haz the power, 2014-08-13 07:24:45]

Change committed as 289209