Simplify method id handling when recording method trace events am: 7ab239950b am: e91351d170

Original change: https://android-review.googlesource.com/c/platform/art/+/2411665

Change-Id: I33a968bbc01cabcb4ca58d69cc263b6b3e6831e4
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>