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

Change-Id: I9c04348b146f2bfb85ade1ddf17403e368d951a7
tree: fbcea5a0742160d5f1b52863fe0477fe0d7ba2a7
  1. darwin-x86_64/
  2. linux-x86_64/
  3. .gitignore
  4. NOTICE
  5. README
  6. update_emulator.sh