Devtools[LayoutEditor]: Rework layout-editor workflow

Source/core/inspector/LayoutEditor.h

Index: Source/core/inspector/LayoutEditor.h
diff --git a/Source/core/inspector/LayoutEditor.h b/Source/core/inspector/LayoutEditor.h
index dcf5c7063171a34108b03af4955a6639d580fb3f..d8c5a46b4390126f1b3122047ee20ef4bd1dc551 100644
--- a/Source/core/inspector/LayoutEditor.h
+++ b/Source/core/inspector/LayoutEditor.h
@@ -19,15 +19,16 @@ namespace blink {
 
 class CSSPrimitiveValue;
 class InspectorCSSAgent;
+class InspectorDOMAgent;
 class JSONArray;
 class JSONObject;
 
 class CORE_EXPORT LayoutEditor final: public NoBaseWillBeGarbageCollectedFinalized<LayoutEditor>, public InspectorOverlayHost::LayoutEditorListener {
     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(LayoutEditor);
 public:
-    static PassOwnPtrWillBeRawPtr<LayoutEditor> create(InspectorCSSAgent* cssAgent)
+    static PassOwnPtrWillBeRawPtr<LayoutEditor> create(InspectorCSSAgent* cssAgent, InspectorDOMAgent* domAgent)
     {
-        return adoptPtrWillBeNoop(new LayoutEditor(cssAgent));
+        return adoptPtrWillBeNoop(new LayoutEditor(cssAgent, domAgent));
     }
 
     void setNode(Node*);
@@ -36,7 +37,7 @@ public:
     DECLARE_VIRTUAL_TRACE();
 
 private:
-    explicit LayoutEditor(InspectorCSSAgent*);
+    LayoutEditor(InspectorCSSAgent*, InspectorDOMAgent*);
     RefPtrWillBeRawPtr<CSSPrimitiveValue> getPropertyCSSValue(CSSPropertyID) const;
     PassRefPtr<JSONObject> createValueDescription(const String&) const;
     void appendAnchorFor(JSONArray*, const String&, const String&, const FloatPoint&, const FloatPoint&) const;
@@ -45,13 +46,16 @@ private:
     void overlayStartedPropertyChange(const String&) override;
     void overlayPropertyChanged(float) override;
     void overlayEndedPropertyChange() override;
+    void clearSelection(bool) override;
 
     RefPtrWillBeMember<Element> m_element;
     RawPtrWillBeMember<InspectorCSSAgent> m_cssAgent;
+    RawPtrWillBeMember<InspectorDOMAgent> m_domAgent;
     CSSPropertyID m_changingProperty;
     float m_propertyInitialValue;
     float m_factor;
     CSSPrimitiveValue::UnitType m_valueUnitType;
+    bool m_madeChanges;
 };
 
 } // namespace blink