Revert "Frameworks: Navigation bar button color (1/2)"

This reverts commit ed1f303abaadec6baaa5c14a697d11985dc34073.
fix errors (double tap)
Appears black screen fix for a while

This issue is side-effect of added google patch on KK MR1.

Fix a couple of issues with mOpeningApps.
https://android.googlesource.com/platform/frameworks/base/+/a8ee262c04749db4f32f73d2b9e7f58989c4638b%5E%21/#F0

[Reproduce path]
Settings -> Location -> Location OFF -> Location ON -> "Location consent Dialog" Popup-> "Agree btn" press
-> Black screen appears for a while

Change-Id: I14efdce87e8d78d38f9aae48568f69937e4fe1fa
[2/2] frameworks/base: Enable quick unlock

Automatically unlock the lockscreen when the correct pin/password is keyed.

Change-Id: I3c1df4b573321a9343d1c339055577d5ca737f14

Conflicts:
	core/java/android/provider/Settings.java