Oilpan: Prepare moving InspectorAgent related classes to oilpan

Source/core/inspector/InspectorBaseAgent.cpp

Index: Source/core/inspector/InspectorBaseAgent.cpp
diff --git a/Source/core/inspector/InspectorBaseAgent.cpp b/Source/core/inspector/InspectorBaseAgent.cpp
index e8144121e974b4a8949e13e27366558e6a42cd3f..8a5ab1a54bd531151c50c972e900631614547721 100644
--- a/Source/core/inspector/InspectorBaseAgent.cpp
+++ b/Source/core/inspector/InspectorBaseAgent.cpp
@@ -32,6 +32,7 @@
 #include "core/inspector/InspectorBaseAgent.h"
 
 #include "core/inspector/InspectorState.h"
+#include "core/inspector/InstrumentingAgents.h"
 #include "wtf/PassOwnPtr.h"
 
 namespace WebCore {
@@ -45,6 +46,11 @@ InspectorAgent::~InspectorAgent()
 {
 }
 
+void InspectorAgent::trace(Visitor* visitor)
+{
+    visitor->trace(m_instrumentingAgents);
+}
+
 void InspectorAgent::appended(InstrumentingAgents* instrumentingAgents, InspectorState* inspectorState)
 {
     m_instrumentingAgents = instrumentingAgents;
@@ -105,6 +111,7 @@ void InspectorAgentRegistry::trace(Visitor* visitor)
 #if ENABLE(OILPAN)
     visitor->trace(m_agents);
 #endif
+    visitor->trace(m_instrumentingAgents);
 }
 
 } // namespace WebCore