Symbol: _MakeButtonGradient
src/add-ons/control_look/FlatControlLook/FlatControlLook.cpp
2127
FlatControlLook::_MakeButtonGradient(BGradientLinear& gradient, BRect& rect,
src/kits/interface/HaikuControlLook.cpp
3871
HaikuControlLook::_MakeButtonGradient(BGradientLinear& gradient, BRect& rect,