Fix 'gn check' errors in //ui/* targets.

Fix 'gn check' errors in //ui/* targets.

Tested with the following configs:

Linux:
$ gn gen out_gn/Debug
$ gn check out_gn/Debug

Android:
$ gn gen --args='os="android" cpu_arch="arm"' out_gn_android/Debug
$ gn check out_gn_android/Debug

Chromeos:
$ gn gen --args='os="chromeos"' out_gn_chromeos/Debug
$ gn check out_gn_chromeos/Debug

BUG=367595, 376000
TEST=see above
R=brettw@chromium.org
TBR=sky@chromium.org

Committed: https://crrev.com/cb1ffc60dc2b70da6676b5112b5bad0bb785f757
Cr-Commit-Position: refs/heads/master@{#314102}

[tfarina, 2015-01-25 17:55:54]

Depends on https://codereview.chromium.org/871813004/

[brettw, 2015-01-26 06:03:39]

brettw@chromium.org changed reviewers:
+ brettw@chromium.org

[brettw, 2015-01-26 06:03:39]

lgtm

[tfarina, 2015-01-26 15:12:37]

I removed //ui/* from .gn, so it should be fine to land without having to wait
for https://codereview.chromium.org/871813004/. As there might be a bug
somewhere in the java template rules for android.

[tfarina, 2015-02-02 01:18:31]

Pushing to CQ!

[tfarina, 2015-02-02 01:18:57]

The CQ bit was checked by tfarina@chromium.org

[commit-bot: I haz the power, 2015-02-02 01:19:02]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/872243004/40001

[commit-bot: I haz the power, 2015-02-02 02:56:11]

Committed patchset #3 (id:40001)

[commit-bot: I haz the power, 2015-02-02 02:57:13]

Patchset 3 (id:??) landed as
https://crrev.com/cb1ffc60dc2b70da6676b5112b5bad0bb785f757
Cr-Commit-Position: refs/heads/master@{#314102}