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 3d22f1aecd227309c8f4a0dcff4f896c25012897..cedb494581f5d643cf3f36b0191f78370c61171b 100644
--- a/Source/core/inspector/InspectorDebuggerAgent.cpp
+++ b/Source/core/inspector/InspectorDebuggerAgent.cpp
@@ -107,7 +107,7 @@ InspectorDebuggerAgent::InspectorDebuggerAgent(InjectedScriptManager* injectedSc
     , m_javaScriptPauseScheduled(false)
     , m_debuggerStepScheduled(false)
     , m_pausingOnNativeEvent(false)
-    , m_listener(0)
+    , m_listener(nullptr)
     , m_skippedStepInCount(0)
     , m_skipAllPauses(false)
 {
@@ -115,7 +115,9 @@ InspectorDebuggerAgent::InspectorDebuggerAgent(InjectedScriptManager* injectedSc
 
 InspectorDebuggerAgent::~InspectorDebuggerAgent()
 {
+#if !ENABLE(OILPAN)
     ASSERT(!m_instrumentingAgents->inspectorDebuggerAgent());
+#endif
 }
 
 void InspectorDebuggerAgent::init()
@@ -1260,5 +1262,11 @@ void InspectorDebuggerAgent::reset()
         m_frontend->globalObjectCleared();
 }
 
+void InspectorDebuggerAgent::trace(Visitor* visitor)
+{
+    visitor->trace(m_listener);
+    InspectorBaseAgent::trace(visitor);
+}
+
 } // namespace WebCore