Upgrade emulator to emu-master-dev build 8681204

Signed-off-by: Huan Song <huans@google.com>
Change-Id: I3ba939f0d7316b51b45d560b02b999c15c1c0cb3
Merged-In: I3ba939f0d7316b51b45d560b02b999c15c1c0cb3
205 files changed