DevTools: allow injecting CSS rules without breaking styles sidebar.

Source/core/inspector/InspectorStyleSheet.h

 /*
  * Copyright (C) 2010, Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
  *     notice, this list of conditions and the following disclaimer in the
@@ skipping 133 matching lines @@
     const CSSRuleVector& flatRules();
 
 protected:
     virtual PassRefPtrWillBeRawPtr<InspectorStyle> inspectorStyle(RefPtrWillBeRawPtr<CSSStyleDeclaration>) override;
 
 private:
     InspectorStyleSheet(InspectorResourceAgent*, const String& id, PassRefPtrWillBeRawPtr<CSSStyleSheet> pageStyleSheet, TypeBuilder::CSS::StyleSheetOrigin::Enum, const String& documentURL, InspectorCSSAgent*);
     RefPtrWillBeRawPtr<CSSRuleSourceData> ruleAfterSourceRange(const SourceRange&);
     RefPtrWillBeRawPtr<CSSRuleSourceData> findRuleByHeaderRange(const SourceRange&);
     RefPtrWillBeRawPtr<CSSRuleSourceData> findRuleByBodyRange(const SourceRange&);
-    RefPtrWillBeRawPtr<CSSRule> ruleForSourceData(CSSRuleSourceData*);
-    RefPtrWillBeRawPtr<CSSRuleSourceData> sourceDataForRule(CSSRule*);
+    RefPtrWillBeRawPtr<CSSRule> ruleForSourceData(RefPtrWillBeRawPtr<CSSRuleSourceData>);
+    RefPtrWillBeRawPtr<CSSRuleSourceData> sourceDataForRule(RefPtrWillBeRawPtr<CSSRule>);
     CSSStyleRule* insertCSSOMRuleInStyleSheet(CSSRule* insertBefore, const String& ruleText, ExceptionState&);
     CSSStyleRule* insertCSSOMRuleInMediaRule(CSSMediaRule*, CSSRule* insertBefore, const String& ruleText, ExceptionState&);
     CSSStyleRule* insertCSSOMRuleBySourceRange(const SourceRange&, const String& ruleText, ExceptionState&);
     String sourceMapURL();
     String sourceURL();
-    void collectFlatRules();
+    void mapSourceDataToCSSOM();
     bool resourceStyleSheetText(String* result);
     bool inlineStyleSheetText(String* result);
     PassRefPtr<TypeBuilder::Array<TypeBuilder::CSS::Selector>> selectorsFromSource(CSSRuleSourceData*, const String&);
     PassRefPtr<TypeBuilder::CSS::SelectorList> buildObjectForSelectorList(CSSStyleRule*);
     String url();
     bool hasSourceURL();
     bool startsAtZero();
 
-    void replaceText(const SourceRange&, const String& text, SourceRange* newRange, String* oldText);
-    void innerSetText(const String& newText, bool markAsLocallyModified);
+    bool replaceText(const SourceRange&, const String& text, SourceRange* newRange, String* oldText);
+    bool innerSetText(const String& newText, bool markAsLocallyModified);
     Element* ownerStyleElement();
 
     RawPtrWillBeMember<InspectorCSSAgent> m_cssAgent;
     RawPtrWillBeMember<InspectorResourceAgent> m_resourceAgent;
     RefPtrWillBeMember<CSSStyleSheet> m_pageStyleSheet;
     TypeBuilder::CSS::StyleSheetOrigin::Enum m_origin;
     String m_documentURL;
     OwnPtrWillBeMember<RuleSourceDataList> m_sourceData;
+    RefPtrWillBeMember<CSSStyleSheet> m_sourceDataSheet;
     String m_text;
     CSSRuleVector m_flatRules;
+    typedef HashMap<unsigned, unsigned, WTF::IntHash<unsigned>, WTF::UnsignedWithZeroKeyHashTraits<unsigned>> IndexMap;
+    IndexMap m_ruleToSourceData;
+    IndexMap m_sourceDataToRule;
     String m_sourceURL;
 };
 
 class InspectorStyleSheetForInlineStyle final : public InspectorStyleSheetBase {
 public:
     static PassRefPtrWillBeRawPtr<InspectorStyleSheetForInlineStyle> create(const String& id, PassRefPtrWillBeRawPtr<Element>, Listener*);
 
     void didModifyElementAttribute();
     virtual bool setText(const String&, ExceptionState&) override;
     virtual bool getText(String* result) override;
@@ skipping 11 matching lines @@
     InspectorStyleSheetForInlineStyle(const String& id, PassRefPtrWillBeRawPtr<Element>, Listener*);
     const String& elementStyleText();
 
     RefPtrWillBeMember<Element> m_element;
     RefPtrWillBeMember<InspectorStyle> m_inspectorStyle;
 };
 
 } // namespace blink
 
 #endif // !defined(InspectorStyleSheet_h)