Oilpan: Prepare moving InspectorController and InspectorAgents to oilpan.

Source/core/inspector/InspectorDebuggerAgent.cpp

Index: Source/core/inspector/InspectorDebuggerAgent.cpp
diff --git a/Source/core/inspector/InspectorDebuggerAgent.cpp b/Source/core/inspector/InspectorDebuggerAgent.cpp
index d5e7ca3edeb23029b77c50da02d7df1e243b9d59..3d13265aa781db81d96b4baa4b11a7cdffed285a 100644
--- a/Source/core/inspector/InspectorDebuggerAgent.cpp
+++ b/Source/core/inspector/InspectorDebuggerAgent.cpp
@@ -108,7 +108,7 @@ InspectorDebuggerAgent::InspectorDebuggerAgent(InjectedScriptManager* injectedSc
     , m_debuggerStepScheduled(false)
     , m_steppingFromFramework(false)
     , m_pausingOnNativeEvent(false)
-    , m_listener(0)
+    , m_listener(nullptr)
     , m_skippedStepInCount(0)
     , m_skipAllPauses(false)
 {
@@ -116,7 +116,9 @@ InspectorDebuggerAgent::InspectorDebuggerAgent(InjectedScriptManager* injectedSc
 
 InspectorDebuggerAgent::~InspectorDebuggerAgent()
 {
+#if !ENABLE(OILPAN)
     ASSERT(!m_instrumentingAgents->inspectorDebuggerAgent());
+#endif
 }
 
 void InspectorDebuggerAgent::init()
@@ -1304,5 +1306,11 @@ void InspectorDebuggerAgent::reset()
         m_frontend->globalObjectCleared();
 }
 
+void InspectorDebuggerAgent::trace(Visitor* visitor)
+{
+    visitor->trace(m_listener);
+    InspectorBaseAgent::trace(visitor);
+}
+
 } // namespace WebCore