Support type selector for camel-cased SVG elements in HTML.

Source/core/css/CSSSelector.h

Index: Source/core/css/CSSSelector.h
diff --git a/Source/core/css/CSSSelector.h b/Source/core/css/CSSSelector.h
index b67a3fad229c54f15a36c8439c2ecdbbd5a7664e..a29ebbbe7fb37b684cf954abdfaadead57d787c7 100644
--- a/Source/core/css/CSSSelector.h
+++ b/Source/core/css/CSSSelector.h
@@ -31,6 +31,8 @@
 namespace blink {
     class CSSSelectorList;
 
+    enum TagSelectorCase { TagLowerCase, TagCamelCase };
+
     // This class represents a selector for a StyleRule.
 
     // CSS selector representation is somewhat complicated and subtle. A representative list of selectors is
@@ -84,7 +86,7 @@ namespace blink {
     public:
         CSSSelector();
         CSSSelector(const CSSSelector&);
-        explicit CSSSelector(const QualifiedName&, bool tagIsImplicit = false);
+        explicit CSSSelector(const QualifiedName&, bool tagIsImplicit = false, TagSelectorCase = TagLowerCase);
 
         ~CSSSelector();
 
@@ -320,6 +322,8 @@ namespace blink {
 
         bool relationIsAffectedByPseudoContent() const { return m_relationIsAffectedByPseudoContent; }
         void setRelationIsAffectedByPseudoContent() { m_relationIsAffectedByPseudoContent = true; }
+        bool tagIsCamelCase() const { return m_tagSelectorCase == TagCamelCase; }
+        void setTagIsCamelCase() { m_tagSelectorCase = TagCamelCase; }
 
     private:
         unsigned m_relation           : 3; // enum Relation
@@ -331,6 +335,7 @@ namespace blink {
         unsigned m_hasRareData            : 1;
         unsigned m_isForPage              : 1;
         unsigned m_tagIsImplicit          : 1;
+        unsigned m_tagSelectorCase        : 1; // enum TagSelectorCase
         unsigned m_relationIsAffectedByPseudoContent  : 1;
 
         unsigned specificityForOneSelector() const;
@@ -476,11 +481,12 @@ inline CSSSelector::CSSSelector()
     , m_hasRareData(false)
     , m_isForPage(false)
     , m_tagIsImplicit(false)
+    , m_tagSelectorCase(TagLowerCase)
     , m_relationIsAffectedByPseudoContent(false)
 {
 }
 
-inline CSSSelector::CSSSelector(const QualifiedName& tagQName, bool tagIsImplicit)
+inline CSSSelector::CSSSelector(const QualifiedName& tagQName, bool tagIsImplicit, TagSelectorCase tagSelectorCase)
     : m_relation(SubSelector)
     , m_match(Tag)
     , m_pseudoType(PseudoNotParsed)
@@ -490,6 +496,7 @@ inline CSSSelector::CSSSelector(const QualifiedName& tagQName, bool tagIsImplici
     , m_hasRareData(false)
     , m_isForPage(false)
     , m_tagIsImplicit(tagIsImplicit)
+    , m_tagSelectorCase(tagSelectorCase)
     , m_relationIsAffectedByPseudoContent(false)
 {
     m_data.m_tagQName = tagQName.impl();
@@ -506,6 +513,7 @@ inline CSSSelector::CSSSelector(const CSSSelector& o)
     , m_hasRareData(o.m_hasRareData)
     , m_isForPage(o.m_isForPage)
     , m_tagIsImplicit(o.m_tagIsImplicit)
+    , m_tagSelectorCase(o.m_tagSelectorCase)
     , m_relationIsAffectedByPseudoContent(o.m_relationIsAffectedByPseudoContent)
 {
     if (o.m_match == Tag) {