PartScrollbarDownArrow 93 Source/core/rendering/RenderThemeChromiumAndroid.cpp IntSize scrollbarSize = blink::Platform::current()->themeEngine()->getSize(blink::WebThemeEngine::PartScrollbarDownArrow); PartScrollbarDownArrow 115 Source/platform/scroll/ScrollbarThemeGtkOrAura.cpp paintPart = blink::WebThemeEngine::PartScrollbarDownArrow;