ScrollByYOffset   148 ash/shelf/overflow_bubble_view.cc     ScrollByYOffset(0);
ScrollByYOffset   160 ash/shelf/overflow_bubble_view.cc     ScrollByYOffset(-event.y_offset());
ScrollByYOffset   174 ash/shelf/overflow_bubble_view.cc   ScrollByYOffset(-event->y_offset());
ScrollByYOffset    44 ash/shelf/overflow_bubble_view.h   void ScrollByYOffset(int y_offset);