Revert "Make Activites touch opaque - DO NOT MERGE"
This reverts commit 74ce78df.
Reason for revert: re-release due to functional regression
Change-Id: I71e2e889d1f2d026f708bdb617b73a5c7c10467d
(cherry picked from commit dd4ee687)
Merged-In: I71e2e889d1f2d026f708bdb617b73a5c7c10467d