1ignore_class.cpp:14:1: warning: [blink-gc] Class 'C' has untraced fields that require tracing. 2void C::Trace(Visitor* visitor) 3^ 4./ignore_class.h:35:5: note: [blink-gc] Untraced field 'm_obj' declared here: 5 Member<HeapObject> m_obj; 6 ^ 71 warning generated. 8