Re-enable checking the "child-account-detection" finch flag on Android.

Re-enable checking the "child-account-detection" finch flag on Android.

This was broken on M42 as it was being called before JNI registration.
However that code has been moved since then and it should and is working fine
post M42.

BUG=467938
Committed: https://crrev.com/11cfb4c7d39135c90941aa13240e83546c75be20
Cr-Commit-Position: refs/heads/master@{#322589}

[knn, 2015-03-27 14:14:03]

knn@chromium.org changed reviewers:
+ treib@chromium.org, yfriedman@chromium.org

[knn, 2015-03-27 14:14:04]

PTAL.

[Marc Treib, 2015-03-27 14:25:00]

LGTM, but I don't own this :)

[Yaron, 2015-03-27 15:39:03]

lgtm

[knn, 2015-03-27 15:47:05]

The CQ bit was checked by knn@chromium.org

[commit-bot: I haz the power, 2015-03-27 15:47:45]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1034403003/1

[commit-bot: I haz the power, 2015-03-27 16:15:41]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-03-27 16:16:39]

Patchset 1 (id:??) landed as
https://crrev.com/11cfb4c7d39135c90941aa13240e83546c75be20
Cr-Commit-Position: refs/heads/master@{#322589}