Revert "HALO: Option to pause the underlying app (1/2)"

This reverts commit aac0359e063186d8b9c26a5d428a6bf63a8f8eb5.

Conflicts:
	services/java/com/android/server/am/ActivityStack.java
Merge branch 'jb-mr1-wip' of github.com:espmartin/frameworks_base into jb-mr1-wip