[NAN] Code clean-up: IDE/link + safety

- Various code clean-ups recommended by IDE.
- Additional debug/warning on native failures
- Constants renumbering to different name-spaces (help prevent
  errors due to same numbers - e.g. response mistaken for command)

Bug: 26562610
Change-Id: I227ebc734a425ebb4dac8ef09311fd5eb77dda90
2 files changed
tree: 2d6b34b12ac73ff978bd0d67ce2469c0b22ea636
  1. service/
  2. tests/