Allow calling GetFunctionName before unwinding.

Some extra initialization needs to occur before calling the local/remote
GetFunctioneName.

Also, cleanup the test code a bit:

- Make all local functions static.
- Create a common function to create and finish remote processes.
- Remove unused function.
- Fix the formatting a bit by making it match clang format.

Test: Ran the unit tests.
Change-Id: I998bed1378d582df59fdf9263df6f208db5d795a