Aurum: findObject performance improvement

Aurum: findObject performance improvement

Improved object search logic

as is -
 1. process list up <- performance degradation point
 2. active window list up
to be -
 1. activated window's process list up
 2. active window list up

Use runnable feature to look up window event when app launched.

Change-Id: I607ae2c20b594b256b2e7b23d5a32eaad90eb255