Make IKeyguardService interface asynchronous

Add a state callback so lockscreen reports back whenever its state
relevant for PhoneWindowManager changed, instead of synchronously
calling into SysUI which can lead to deadlocks. Directly use
LockPatternUtils for isSecure, and optimize the number of calls to
this method to optimize layout performance.

Bug: 17677097
Change-Id: I5d491fc8884d4f84d9562626b9ea0d5eaa5166fc
15 files changed