[automerger skipped] Expand nuplayer mutex for mediametrics management am: 8220d3f72c -s ours

am skip reason: Change-Id I1e9bbcd67a1510f70fad66e8ef77f529008e248a with SHA-1 86b46a20b2 is in history

Original change: undetermined

Change-Id: I335133ca5ee6e41761c7732046b0469ecd3ad005