NPVARIANT_IS_NULL  128 third_party/npapi/bindings/npruntime.h #define NPVARIANT_IS_NULL(_v)    ((_v).type == NPVariantType_Null)
NPVARIANT_IS_NULL  156 third_party/npapi/npspy/extern/plugin/npruntime.h #define NPVARIANT_IS_NULL(_v)    ((_v).type == NPVariantType_Null)