Oilpan: Prepare moving InspectorAgent related classes to oilpan

Source/core/inspector/InspectorConsoleAgent.cpp

Index: Source/core/inspector/InspectorConsoleAgent.cpp
diff --git a/Source/core/inspector/InspectorConsoleAgent.cpp b/Source/core/inspector/InspectorConsoleAgent.cpp
index e9948e65534d4e0dfc90c4d20b4304c5ce794541..caa342d3843a02f601047cdedf6fa61f602587bf 100644
--- a/Source/core/inspector/InspectorConsoleAgent.cpp
+++ b/Source/core/inspector/InspectorConsoleAgent.cpp
@@ -76,14 +76,15 @@ InspectorConsoleAgent::~InspectorConsoleAgent()
 #if !ENABLE(OILPAN)
     m_instrumentingAgents->setInspectorConsoleAgent(0);
     m_instrumentingAgents = nullptr;
+    m_state = nullptr;
+    m_injectedScriptManager = nullptr;
 #endif
-    m_state = 0;
-    m_injectedScriptManager = 0;
 }
 
 void InspectorConsoleAgent::trace(Visitor* visitor)
 {
     visitor->trace(m_timelineAgent);
+    visitor->trace(m_injectedScriptManager);
     InspectorBaseAgent::trace(visitor);
 }