Simplify CSSSelector::isAttributeSelector() by not checking each Match type

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 d9c9933b5eb282626bcf6e84a532f724c6d6ede3..371bc6615a3d157c100eb2676b1cfc28cf084f8d 100644
--- a/Source/core/css/CSSSelector.h
+++ b/Source/core/css/CSSSelector.h
@@ -110,16 +110,17 @@ namespace WebCore {
             Tag, // Example: div
             Id, // Example: #id
             Class, // example: .class
+            PseudoClass, // Example:  :nth-child(2)
+            PseudoElement, // Example: ::first-line
+            PagePseudoClass, // ??
             Exact, // Example: E[foo="bar"]
+            FirstAttributeSelectorMatch = Exact,

[Inactive, 2014/06/04 23:49:52]

esprehn@, is this what you had in mind? I'd like not to increase the size of
this enum unnecessarily since we are storing this in a bitfield (there is still
some room for now, but we don't want to use those bits if we don't need to).

[Inactive, 2014/06/05 02:00:22]

Maybe I should move this one to the end of the enum to make it clearer it is not
a normal enum value?

             Set, // Example: E[foo]
-            List, // Example: E[foo~="bar"]
             Hyphen, // Example: E[foo|="bar"]
-            PseudoClass, // Example:  :nth-child(2)
-            PseudoElement, // Example: ::first-line
+            List, // Example: E[foo~="bar"]
             Contain, // css3: E[foo*="bar"]
             Begin, // css3: E[foo^="bar"]
             End, // css3: E[foo$="bar"]
-            PagePseudoClass // ??
         };
 
         enum Relation {
@@ -402,13 +403,7 @@ inline bool CSSSelector::isSiblingSelector() const
 
 inline bool CSSSelector::isAttributeSelector() const
 {
-    return m_match == CSSSelector::Exact
-        || m_match ==  CSSSelector::Set
-        || m_match == CSSSelector::List
-        || m_match == CSSSelector::Hyphen
-        || m_match == CSSSelector::Contain
-        || m_match == CSSSelector::Begin
-        || m_match == CSSSelector::End;
+    return m_match >= FirstAttributeSelectorMatch;
 }
 
 inline bool CSSSelector::isContentPseudoElement() const