MaskAlpha        1304 Source/core/css/CSSComputedStyleDeclaration.cpp     case MaskAlpha:
MaskAlpha         284 Source/core/css/resolver/CSSToStyleMap.cpp         type = MaskAlpha;
MaskAlpha         192 Source/core/rendering/style/FillLayer.h     static EMaskSourceType initialFillMaskSourceType(EFillLayerType) { return MaskAlpha; }