support all capital method name in c++

if there is a method with all capital name, it conflicts with the enum's name for the transaction ID

so remove enum and write hardcorded transaction id to prevent misuse
from client

Bug: 119525871
Test: ./runtests.sh
Test: m -j
Change-Id: Ia82b16b6262256449f4da29b549bdd74812aec5d
7 files changed