Oilpan: Prepare moving InspectorAgent related classes to oilpan

Source/core/inspector/InspectorHeapProfilerAgent.h

Index: Source/core/inspector/InspectorHeapProfilerAgent.h
diff --git a/Source/core/inspector/InspectorHeapProfilerAgent.h b/Source/core/inspector/InspectorHeapProfilerAgent.h
index 1fbf47452ad9078062ba8b561cb4a3d6e68a13e6..779f35afb1f75f171a1a43bf74f63005ed2b6424 100644
--- a/Source/core/inspector/InspectorHeapProfilerAgent.h
+++ b/Source/core/inspector/InspectorHeapProfilerAgent.h
@@ -54,6 +54,7 @@ class InspectorHeapProfilerAgent FINAL : public InspectorBaseAgent<InspectorHeap
 public:
     static PassOwnPtrWillBeRawPtr<InspectorHeapProfilerAgent> create(InjectedScriptManager*);
     virtual ~InspectorHeapProfilerAgent();
+    virtual void trace(Visitor*) OVERRIDE;
 
     virtual void collectGarbage(ErrorString*) OVERRIDE;
 
@@ -86,7 +87,7 @@ private:
     InjectedScriptManager* m_injectedScriptManager;
     InspectorFrontend::HeapProfiler* m_frontend;
     unsigned m_nextUserInitiatedHeapSnapshotNumber;
-    OwnPtr<HeapStatsUpdateTask> m_heapStatsUpdateTask;
+    OwnPtrWillBeMember<HeapStatsUpdateTask> m_heapStatsUpdateTask;
 };
 
 } // namespace WebCore