Make the memory store operations serial.

Bug: 128499160
Test: new test in this patch

Change-Id: I6ccdc801e3888a61b22272c8ce9480f45fa26df2
(cherry picked from commit 3074f10b41fd1b622dc698d89e4c9e1bcb5b05cf)
Merged-In: I10b5c5cd85fcb76924ba96c8c379be677774705d
2 files changed