Do not use zero or empty android:versionCode

Do not use zero or empty android:versionCode

This isn't in general recommended by Android,
and it's causing problems with some services that
need to establish white/black-listing.

BUG=422491
Committed: https://crrev.com/ad608226402b04d953f5c7b13966e6a453e20a9e
Cr-Commit-Position: refs/heads/master@{#299334}

[aruslan, 2014-10-11 00:26:48]

aruslan@chromium.org changed reviewers:
+ cjhopman@chromium.org

[aruslan, 2014-10-11 00:26:49]

PTAL, thanks!

[cjhopman, 2014-10-11 00:34:51]

lgtm

[aruslan, 2014-10-13 17:34:26]

The CQ bit was checked by aruslan@chromium.org

[commit-bot: I haz the power, 2014-10-13 17:34:52]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/647483004/40001

[commit-bot: I haz the power, 2014-10-13 18:53:22]

Committed patchset #2 (id:40001)

[commit-bot: I haz the power, 2014-10-13 18:54:06]

Patchset 2 (id:??) landed as
https://crrev.com/ad608226402b04d953f5c7b13966e6a453e20a9e
Cr-Commit-Position: refs/heads/master@{#299334}