uniteIfNonZero    127 Source/platform/geometry/FloatRect.cpp void FloatRect::uniteIfNonZero(const FloatRect& other)
uniteIfNonZero    105 Source/platform/geometry/IntRect.cpp void IntRect::uniteIfNonZero(const IntRect& other)
uniteIfNonZero     92 Source/platform/geometry/LayoutRect.cpp void LayoutRect::uniteIfNonZero(const LayoutRect& other)