Add support for attribute selectors in TargetedStyleRecalc.

Source/core/css/analyzer/DescendantInvalidationSet.cpp

 /*
  * Copyright (C) 2014 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 51 matching lines @@
         HashSet<AtomicString>::const_iterator end = other.m_ids->end();
         for (HashSet<AtomicString>::const_iterator it = other.m_ids->begin(); it != end; ++it)
             addId(*it);
     }
 
     if (other.m_tagNames) {
         HashSet<AtomicString>::const_iterator end = other.m_tagNames->end();
         for (HashSet<AtomicString>::const_iterator it = other.m_tagNames->begin(); it != end; ++it)
             addTagName(*it);
     }
+
+    if (other.m_attributes) {
+        HashSet<AtomicString>::const_iterator end = other.m_attributes->end();
+        for (HashSet<AtomicString>::const_iterator it = other.m_attributes->begin(); it != end; ++it)
+            addAttribute(*it);
+    }
 }
 
 HashSet<AtomicString>& DescendantInvalidationSet::ensureClassSet()
 {
     if (!m_classes)
         m_classes = adoptPtr(new HashSet<AtomicString>);
     return *m_classes;
 }
 
 HashSet<AtomicString>& DescendantInvalidationSet::ensureIdSet()
 {
     if (!m_ids)
         m_ids = adoptPtr(new HashSet<AtomicString>);
     return *m_ids;
 }
 
 HashSet<AtomicString>& DescendantInvalidationSet::ensureTagNameSet()
 {
     if (!m_tagNames)
         m_tagNames = adoptPtr(new HashSet<AtomicString>);
     return *m_tagNames;
 }
 
+HashSet<AtomicString>& DescendantInvalidationSet::ensureAttributeSet()
+{
+    if (!m_attributes)
+        m_attributes = adoptPtr(new HashSet<AtomicString>);
+    return *m_attributes;
+}
+
 void DescendantInvalidationSet::addClass(const AtomicString& className)
 {
     if (wholeSubtreeInvalid())
         return;
     ensureClassSet().add(className);
 }
 
 void DescendantInvalidationSet::addId(const AtomicString& id)
 {
     if (wholeSubtreeInvalid())
         return;
     ensureIdSet().add(id);
 }
 
 void DescendantInvalidationSet::addTagName(const AtomicString& tagName)
 {
     if (wholeSubtreeInvalid())
         return;
     ensureTagNameSet().add(tagName);
 }
 
+void DescendantInvalidationSet::addAttribute(const AtomicString& attribute)
+{
+    if (wholeSubtreeInvalid())
+        return;
+    ensureAttributeSet().add(attribute);
+}
+
 void DescendantInvalidationSet::getClasses(Vector<AtomicString>& classes) const
 {
     if (!m_classes)
         return;
     for (HashSet<AtomicString>::const_iterator it = m_classes->begin(); it != m_classes->end(); ++it)
         classes.append(*it);
 }
 
+void DescendantInvalidationSet::getAttributes(Vector<AtomicString>& attributes) const
+{
+    if (!m_attributes)
+        return;
+    for (HashSet<AtomicString>::const_iterator it = m_attributes->begin(); it != m_attributes->end(); ++it)
+        attributes.append(*it);
+}
+
 void DescendantInvalidationSet::setWholeSubtreeInvalid()
 {
     if (m_allDescendantsMightBeInvalid)
         return;
 
     m_allDescendantsMightBeInvalid = true;
     m_classes = nullptr;
     m_ids = nullptr;
     m_tagNames = nullptr;
+    m_attributes = nullptr;
 }
 
 } // namespace WebCore