setCompositeOperation 1618 Source/core/html/canvas/CanvasRenderingContext2D.cpp void CanvasRenderingContext2D::setCompositeOperation(const String& operation)
setCompositeOperation  393 Source/platform/graphics/GraphicsContext.cpp void GraphicsContext::setCompositeOperation(CompositeOperator compositeOperation, WebBlendMode blendMode)
setCompositeOperation  226 Source/platform/graphics/GraphicsContextState.cpp void GraphicsContextState::setCompositeOperation(CompositeOperator compositeOperation, blink::WebBlendMode blendMode)