This patch adds the light greylist and vendor list source files from
the internal tree, intersected with the full list of private APIs
in AOSP. This is a prerequisite for enabling the blacklist.
The CL is not merged into internal master.
Test: N/A
Change-Id: I41442574fff6894cd1cb004abc5101210cfb86ba
Merged-In: I8757a66bf625388e6f6419714ef5bba7af5d93ea
