Revert of [Android] Reland cleanup of old_interface in build/android/pylib.

Revert of [Android] Reland cleanup of old_interface in build/android/pylib. (patchset #2 id:20001 of https://codereview.chromium.org/1050883002/)

Reason for revert:
Broke the perf bots again.

Original issue's description:
> [Android] Reland cleanup of old_interface in build/android/pylib.
>
> Original CL: https://codereview.chromium.org/1047703002/
>
> BUG=267773
TBR=klundberg@chromium.org,perezju@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=267773
Committed: https://crrev.com/bd6b7ec8c71da55fc79039374af97f77e5b2051b
Cr-Commit-Position: refs/heads/master@{#323573}

[jbudorick, 2015-04-02 22:03:11]

Created Revert of [Android] Reland cleanup of old_interface in
build/android/pylib.

[jbudorick, 2015-04-02 22:10:45]

The CQ bit was unchecked by jbudorick@chromium.org

[jbudorick, 2015-04-02 22:10:45]

The CQ bit was checked by jbudorick@chromium.org

[jbudorick, 2015-04-02 22:50:55]

The CQ bit was unchecked by jbudorick@chromium.org

[jbudorick, 2015-04-02 22:55:36]

Committed patchset #2 (id:270001) manually as
bd6b7ec8c71da55fc79039374af97f77e5b2051b (presubmit successful).

[commit-bot: I haz the power, 2015-04-03 20:29:34]

Patchset 2 (id:??) landed as
https://crrev.com/bd6b7ec8c71da55fc79039374af97f77e5b2051b
Cr-Commit-Position: refs/heads/master@{#323573}