[automerger skipped] Fix the string reference equality comparison in MusicFxHelper am: 701506234a -s ours

am skip reason: Merged-In I996951c7f71678c76afec78efd452b275f17213e with SHA-1 52c9b65242 is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/27172378

Change-Id: Id19d349ce2f1159d2674fb4fc12b97b7db0735b8
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>