Oilpan: Prepare moving InspectorAgent related classes to oilpan

Source/core/inspector/InspectorBaseAgent.cpp

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 25 matching lines @@
 
 namespace blink {
 
 InspectorAgent::InspectorAgent(const String& name)
     : m_name(name)
 {
 }
 
 InspectorAgent::~InspectorAgent()
 {
+#if ENABLE(OILPAN)
+    m_state = nullptr;
+#endif
 }
 
 void InspectorAgent::trace(Visitor* visitor)
 {
     visitor->trace(m_instrumentingAgents);
+    visitor->trace(m_state);
 }
 
 void InspectorAgent::appended(InstrumentingAgents* instrumentingAgents, InspectorState* inspectorState)
 {
     m_instrumentingAgents = instrumentingAgents;
     m_state = inspectorState;
     init();
 }
 
 InspectorAgentRegistry::InspectorAgentRegistry(InstrumentingAgents* instrumentingAgents, InspectorCompositeState* inspectorState)
@@ skipping 40 matching lines @@
 
 void InspectorAgentRegistry::flushPendingFrontendMessages()
 {
     for (size_t i = 0; i < m_agents.size(); i++)
         m_agents[i]->flushPendingFrontendMessages();
 }
 
 void InspectorAgentRegistry::trace(Visitor* visitor)
 {
     visitor->trace(m_instrumentingAgents);
+    visitor->trace(m_inspectorState);
 #if ENABLE(OILPAN)
     visitor->trace(m_agents);
 #endif
 }
 
 void InspectorAgentRegistry::didCommitLoadForMainFrame()
 {
     for (size_t i = 0; i < m_agents.size(); i++)
         m_agents[i]->didCommitLoadForMainFrame();
 }
 
 } // namespace blink