leveldb: Move GN build file from secondary tree to the main tree.

leveldb: Move GN build file from secondary tree to the main tree.

There seems to be no reason to keep it out there. It just work just fine
in the main tree.

BUG=None
TEST=gn gen out-gn still works
R=cmumford@chromium.org

Committed: https://crrev.com/f11743d6ccb6172546c5d33b758b6b6b66ef4181
Cr-Commit-Position: refs/heads/master@{#324542}

[tfarina, 2015-04-09 19:27:43]

Chris, friendly ping?

[cmumford, 2015-04-09 21:16:58]

On 2015/04/09 at 19:27:43, tfarina wrote:
> Chris, friendly ping?

I have no idea what the secondary tree even is, or why leveldb was put there. Is
there somebody that would be a better candidate to review this?

[tfarina, 2015-04-09 21:44:48]

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

[tfarina, 2015-04-09 21:45:17]

Brett, could you review this?

[brettw, 2015-04-09 21:48:57]

lgtm

[tfarina, 2015-04-09 23:09:23]

The CQ bit was checked by tfarina@chromium.org

[commit-bot: I haz the power, 2015-04-09 23:10:05]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1065393002/1

[commit-bot: I haz the power, 2015-04-09 23:57:04]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-04-09 23:57:54]

Patchset 1 (id:??) landed as
https://crrev.com/f11743d6ccb6172546c5d33b758b6b6b66ef4181
Cr-Commit-Position: refs/heads/master@{#324542}