Oilpan: Prepare moving InspectorController and InspectorAgents to oilpan.

Source/core/inspector/InspectorDOMAgent.cpp

Index: Source/core/inspector/InspectorDOMAgent.cpp
diff --git a/Source/core/inspector/InspectorDOMAgent.cpp b/Source/core/inspector/InspectorDOMAgent.cpp
index 10d432c7c3f350d9ff0e6cc8c16cf66657fc3a7b..2610e360a4cb7329b480c93f11c07c3c2bd43439 100644
--- a/Source/core/inspector/InspectorDOMAgent.cpp
+++ b/Source/core/inspector/InspectorDOMAgent.cpp
@@ -2101,5 +2101,21 @@ bool InspectorDOMAgent::pushDocumentUponHandlelessOperation(ErrorString* errorSt
     return true;
 }
 
+void InspectorDOMAgent::trace(Visitor* visitor)
+{
+    visitor->trace(m_pageAgent);
+#if ENABLE(OILPAN)
+    visitor->trace(m_documentNodeToIdMap);
+    visitor->trace(m_danglingNodeToIdMaps);
+    visitor->trace(m_idToNode);
+#endif
+    visitor->trace(m_idToNodesMap);
+    visitor->trace(m_document);
+    visitor->trace(m_searchResults);
+    visitor->trace(m_history);
+    visitor->trace(m_domEditor);
+    InspectorBaseAgent::trace(visitor);
+}
+
 } // namespace WebCore