Merge "blast: negative display frames are invalid"

    int w = frame.getWidth();

    int h = frame.getHeight();

    if (x < 0) {

        x = 0;

        w = frame.right;

    }

    if (y < 0) {

        y = 0;

        h = frame.bottom;

    }

    Mutex::Autolock lock(mStateMutex);

    if (mState.current.active.transform.tx() == x && mState.current.active.transform.ty() == y &&

        mState.current.active.w == w && mState.current.active.h == h) {