Revert "fix browser causes hotreboot"

This reverts commit eae2514fedd030c5d9a88cc5e9f19a1e6047f183.
add preferred app Settings

N/A

Change-Id: I478a24e0818728ae1511f91e84f6456e99a24b09
Ref-Id: I595d395762f34906d952cf7cefcdc006830e4ac3
make keyguard related code being independent of framework/base

Change-Id: I58573fc5397074cdbdbb16d5b1bb3fba2ae62b37

orignal onext commit:
commit d94eda8a9d05de26f0e7846c980465e3c16887d5
Author: wangshujie <wangshujie@xiaomi.com>
Date:   Tue Dec 17 19:05:56 2013 +0800

    make keyguard related code being independent of framework/base

    Change-Id: I58573fc5397074cdbdbb16d5b1bb3fba2ae62b37