Merge "Make mMutex the last attribute to be released" into main

    void cancelTimer() REQUIRES(mMutex);

    ScheduleResult scheduleLocked(CallbackToken, ScheduleTiming) REQUIRES(mMutex);

    std::mutex mutable mMutex;

    static constexpr nsecs_t kInvalidTime = std::numeric_limits<int64_t>::max();

    std::unique_ptr<TimeKeeper> const mTimeKeeper;

    VsyncSchedule::TrackerPtr mTracker;

    nsecs_t const mTimerSlack;

    nsecs_t const mMinVsyncDistance;

    std::mutex mutable mMutex;

    size_t mCallbackToken GUARDED_BY(mMutex) = 0;

    CallbackMap mCallbacks GUARDED_BY(mMutex);