InlinedVisitor: Migrate dom to use inlined tracing

Source/core/dom/ActiveDOMObjectTest.cpp

Index: Source/core/dom/ActiveDOMObjectTest.cpp
diff --git a/Source/core/dom/ActiveDOMObjectTest.cpp b/Source/core/dom/ActiveDOMObjectTest.cpp
index 3a74f5a45c1ffa23739d8127343518f414b25cee..4d3220ec17b63fdc23a3dbf0c40312d25abbc71d 100644
--- a/Source/core/dom/ActiveDOMObjectTest.cpp
+++ b/Source/core/dom/ActiveDOMObjectTest.cpp
@@ -44,7 +44,7 @@ class MockActiveDOMObject final : public GarbageCollectedFinalized<MockActiveDOM
 public:
     explicit MockActiveDOMObject(ExecutionContext* context) : ActiveDOMObject(context) { }
 
-    virtual void trace(Visitor* visitor) override
+    DEFINE_INLINE_VIRTUAL_TRACE()
     {
         ActiveDOMObject::trace(visitor);
     }