1inner_class.cpp:9:1: warning: [blink-gc] Class 'InnerObject' has untraced fields that require tracing. 2void SomeObject::InnerObject::Trace(Visitor* visitor) 3^ 4./inner_class.h:18:9: note: [blink-gc] Untraced field 'm_obj' declared here: 5 Member<InnerObject> m_obj; 6 ^ 71 warning generated. 8