Run google-java-format on adb codebase

The initial plan was to have a gradual reformat to preserve the commit
history but google-java-format does not allow this. It reformat blindly
without taking into account the context. e.g.: Changing one line in a
switch-case make this line become unaligned with the unchanged lines
since only that line is formatted by google-java-format.

This impacts the commit history and its searchability but this is a hit
that is worth it since there is no tool to automatically re-format what
check-style is reporting (and preventing upload). The alternative is to
not use google-java-format and manually fix all the warnings which is
not practical.

This CL leverages "enhanced switch statement" to reduce the amount of
disturbed code.

Test: NA
Bug: NA
No-Typo-Check: Reformat
Flag: EXEMPT(reformat)

Change-Id: I6abc7b6bbdf46bc9c8e12eecf4a4e0aaf992f274