notifyObserversCanvasChanged  224 Source/core/html/HTMLCanvasElement.cpp     notifyObserversCanvasChanged(rect);
notifyObserversCanvasChanged  104 Source/core/html/HTMLCanvasElement.h     void notifyObserversCanvasChanged(const FloatRect&);
notifyObserversCanvasChanged 1800 Source/core/html/canvas/CanvasRenderingContext2D.cpp             canvas()->notifyObserversCanvasChanged(dirtyRect);