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

Source/core/inspector/LayoutEditor.h

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef LayoutEditor_h
 #define LayoutEditor_h
 
 #include "core/CSSPropertyNames.h"
 #include "core/CoreExport.h"
 #include "core/css/CSSPrimitiveValue.h"
 #include "core/dom/Element.h"
 #include "platform/heap/Handle.h"
 #include "wtf/PassOwnPtr.h"
 #include "wtf/RefPtr.h"
 #include "wtf/text/WTFString.h"
 
 namespace blink {
 
 class CSSPrimitiveValue;
 class InspectorCSSAgent;
 class InspectorDOMAgent;
 class JSONArray;
 class JSONObject;
 
 class CORE_EXPORT LayoutEditor final : public NoBaseWillBeGarbageCollectedFinalized<LayoutEditor> {
+    WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED(LayoutEditor);
 public:
     static PassOwnPtrWillBeRawPtr<LayoutEditor> create(InspectorCSSAgent* cssAgent, InspectorDOMAgent* domAgent)
     {
         return adoptPtrWillBeNoop(new LayoutEditor(cssAgent, domAgent));
     }
 
     void selectNode(Node*);
     Node* node() { return m_element.get(); }
     PassRefPtr<JSONObject> buildJSONInfo() const;
     void overlayStartedPropertyChange(const String&);
@@ skipping 16 matching lines @@
     float m_propertyInitialValue;
     float m_factor;
     CSSPrimitiveValue::UnitType m_valueUnitType;
     bool m_isDirty;
 };
 
 } // namespace blink
 
 
 #endif // !defined(LayoutEditor_h)