Upgrade emulator to emu-master-dev build 3700138 am: 481f1f5b65
am: 8b4d20fc29

Change-Id: I97a10027a361dac6c1a2e6e131d3ca33cffb1a5a
tree: fbcea5a0742160d5f1b52863fe0477fe0d7ba2a7
  1. darwin-x86_64/
  2. linux-x86_64/
  3. .gitignore
  4. NOTICE
  5. README
  6. update_emulator.sh