Merge "Avoid RingBuffer creation on each VelocityTracker#add call"

void AccumulatingVelocityTrackerStrategy::addMovement(nsecs_t eventTime, int32_t pointerId,

                                                      float position) {

    auto [movementIt, _] = mMovements.insert({pointerId, RingBuffer<Movement>(HISTORY_SIZE)});

    RingBuffer<Movement>& movements = movementIt->second;

    auto [ringBufferIt, _] = mMovements.try_emplace(pointerId, HISTORY_SIZE);

    RingBuffer<Movement>& movements = ringBufferIt->second;

    const size_t size = movements.size();

    if (size != 0 && movements[size - 1].eventTime == eventTime) {