foregroundIsKnownToBeOpaqueInRect 1336 Source/core/rendering/RenderBox.cpp bool RenderBox::foregroundIsKnownToBeOpaqueInRect(const LayoutRect& localRect, unsigned maxDepthToTest) const
foregroundIsKnownToBeOpaqueInRect  488 Source/core/rendering/RenderImage.cpp bool RenderImage::foregroundIsKnownToBeOpaqueInRect(const LayoutRect& localRect, unsigned) const