Revert of precache: Move the java files into //components/precache/android

Revert of precache: Move the java files into //components/precache/android (patchset #5 id:120001 of https://codereview.chromium.org/1031003003/)

Reason for revert:
This broke downstream chrome for android.  Coordination with chrome os is required. See bug for more details.

Original issue's description:
> precache: Move the java files into //components/precache/android
>
> This moves code out of //java/apps/chrome/.../precache into:
>   . //components/precache/android/: classes that provide information about
>     device-state, network connectivity etc.
>   . //chrome/android/.../precache/: precache service and service launchers.
>
> BUG=401552
>
> Committed: https://crrev.com/efb5a13547940947b2c8f42a4e9ed64d45bdd2d2
> Cr-Commit-Position: refs/heads/master@{#322298}

TBR=bengr@chromium.org,yfriedman@chromium.org,thestig@chromium.org,sadrul@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=401552
Committed: https://crrev.com/28464ce3eebbc11c4773f8b0679ee9000b495ef1
Cr-Commit-Position: refs/heads/master@{#322355}

[alex clarke (OOO till 29th), 2015-03-26 11:23:23]

Created Revert of precache: Move the java files into
//components/precache/android

[commit-bot: I haz the power, 2015-03-26 11:24:03]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1032273004/1

[commit-bot: I haz the power, 2015-03-26 11:25:00]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-03-26 11:25:44]

Patchset 1 (id:??) landed as
https://crrev.com/28464ce3eebbc11c4773f8b0679ee9000b495ef1
Cr-Commit-Position: refs/heads/master@{#322355}

[sadrul, 2015-03-27 17:10:19]

A revert of this CL (patchset #1 id:1) has been created in
https://codereview.chromium.org/1036363002/ by sadrul@chromium.org.

The reason for reverting is: Reland the patch. Downstream will be updated
shortly..