Make classes and structures in core/inspector fast-allocated.

Source/core/inspector/InspectorState.h

Index: Source/core/inspector/InspectorState.h
diff --git a/Source/core/inspector/InspectorState.h b/Source/core/inspector/InspectorState.h
index d7b805cbfeb14834658fe34c604c2c3684680a4f..1c2e00d867689c9cc3d3371270ff04e038f5976d 100644
--- a/Source/core/inspector/InspectorState.h
+++ b/Source/core/inspector/InspectorState.h
@@ -92,6 +92,7 @@ private:
 class CORE_EXPORT InspectorCompositeState final : public NoBaseWillBeGarbageCollectedFinalized<InspectorCompositeState>, public InspectorStateUpdateListener {
     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(InspectorCompositeState);
     WTF_MAKE_NONCOPYABLE(InspectorCompositeState);
+    WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED(InspectorCompositeState);
 public:
     InspectorCompositeState(InspectorStateClient* inspectorStateClient)
         : m_client(inspectorStateClient)