ContextSensitivePropertyOpacity 1862 Source/core/rendering/RenderObject.cpp     if (contextSensitiveProperties & ContextSensitivePropertyOpacity && diff <= StyleDifferenceRepaintLayer) {
ContextSensitivePropertyOpacity  608 Source/core/rendering/style/RenderStyle.cpp         changedContextSensitiveProperties |= ContextSensitivePropertyOpacity;