Add the BUILD files for content_resources.

Add the BUILD files for content_resources.

- Add GN build file (BUILD.gn) for content_resources target
(//content/app/resources).
- Add GRD file for grit (content_resources.grd).
- Add GYP file (content_resources.gyp) to generate the grit header file
from content_resources.grd

Not hooked up yet, this will come in the next CL.

BUG=338338
TEST=None
R=avi@chromium.org
NOTRY=true

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=290150

[Avi (use Gerrit), 2014-08-16 04:25:50]

lgtm

I'm not a build file expert, but this looks plausible.

[tfarina, 2014-08-16 14:32:14]

The CQ bit was checked by tfarina@chromium.org

[commit-bot: I haz the power, 2014-08-16 14:33:17]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/tfarina@chromium.org/475223004/1

[commit-bot: I haz the power, 2014-08-16 14:42:47]

Committed patchset #1 (1) as 290150

[Nico, 2014-08-20 15:41:10]

https://codereview.chromium.org/475223004/diff/1/content/app/resources/BUILD.gn
File content/app/resources/BUILD.gn (right):

https://codereview.chromium.org/475223004/diff/1/content/app/resources/BUILD....
content/app/resources/BUILD.gn:8: source = "content_resources.grd"
Why does this rule exist both here and in content/BUILD.gn ?