Devtools [LayoutEditor]: Patch values in the selected rule

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/css/CSSStyleRule.h"
+#include "core/css/CSSRuleList.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;
@@ skipping 20 matching lines @@
     void previousSelector();
     String currentSelectorInfo();
 
     DECLARE_TRACE();
 
 private:
     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;
-    void initializeCSSRules();
+    bool setCSSPropertyValueInCurrentRule(const String&);
+    bool currentStyleIsInline();
 
     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_isDirty;
 
-    WillBeHeapVector<RefPtrWillBeMember<CSSStyleRule>> m_matchedRules;
-    // -1 means "inline style".
-    int m_currentRuleIndex;
+    RefPtrWillBeRawPtr<CSSRuleList> m_matchedRules;
+    // When m_currentRuleIndex == m_matchedRules.length(), current style is inline style.
+    unsigned m_currentRuleIndex;
 };
 
 } // namespace blink
 
 
 #endif // !defined(LayoutEditor_h)