Android R Preview 4 (RPP4.200409.015)
Revert "Upgrade python/mock to 4.0.2" This reverts commit 73ebb2ed5b2c2548259190bcbec2136f25598ec6. Reason for revert: The CL caused acloud unittest fail. (b/151394661) Bug: 151394661 Bug: 151400302 Change-Id: I174b84067f892cb343abdc3a3aebd90cd1ddb0d3