Merge tag 'android-security-14.0.0_r15' of...

Merge tag 'android-security-14.0.0_r15' of https://android.googlesource.com/platform/frameworks/base into lineage-21.0

Android Security 14.0.0 Release 15 (12496787)

* tag 'android-security-14.0.0_r15' of https://android.googlesource.com/platform/frameworks/base:
  Allow uninstalling DMRH when not used for management
  Properly handle onNullBinding() in appwidget service.
  Block clipboard UI when device is locked

 Conflicts:
	packages/SystemUI/src/com/android/systemui/clipboardoverlay/ClipboardListener.java
	packages/SystemUI/tests/src/com/android/systemui/clipboardoverlay/ClipboardListenerTest.java

Change-Id: I2bb529d8999199a655f970bff4aa80deac94d6ec