Use ASCII-caseless matching for attribute names.

third_party/WebKit/Source/core/dom/AttributeCollection.h

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  * Copyright (C) 2014 Apple Inc. All rights reserved.
  * Copyright (C) 2014 Samsung Electronics. 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
@@ skipping 124 matching lines @@
 }
 
 template <typename Container, typename ContainerMemberType>
 inline size_t
 AttributeCollectionGeneric<Container, ContainerMemberType>::FindIndex(
     const QualifiedName& name,
     bool should_ignore_case) const {
   iterator end = this->end();
   unsigned index = 0;
   for (iterator it = begin(); it != end; ++it, ++index) {
-    if (it->GetName().MatchesPossiblyIgnoringCase(name, should_ignore_case))
+    if (it->GetName().MatchesPossiblyIgnoringASCIICase(name,
+                                                       should_ignore_case))
       return index;
   }
   return kNotFound;
 }
 
 // We use a boolean parameter instead of calling shouldIgnoreAttributeCase so
 // that the caller can tune the behavior (hasAttribute is case sensitive whereas
 // getAttribute is not).
 template <typename Container, typename ContainerMemberType>
 inline size_t
@@ skipping 41 matching lines @@
     bool should_ignore_attribute_case) const {
   // Continue to checking case-insensitively and/or full namespaced names if
   // necessary:
   iterator end = this->end();
   unsigned index = 0;
   for (iterator it = begin(); it != end; ++it, ++index) {
     // FIXME: Why check the prefix? Namespace is all that should matter
     // and all HTML/SVG attributes have a null namespace!
     if (!it->GetName().HasPrefix()) {
       if (should_ignore_attribute_case &&
-          DeprecatedEqualIgnoringCase(name, it->LocalName()))
+          EqualIgnoringASCIICase(name, it->LocalName()))
         return index;
     } else {
-      // FIXME: Would be faster to do this comparison without calling toString,
+      // FIXME: Would be faster to do this comparison without calling ToString,
       // which generates a temporary string by concatenation. But this branch is
       // only reached if the attribute name has a prefix, which is rare in HTML.
-      if (EqualPossiblyIgnoringCase(name, it->GetName().ToString(),
-                                    should_ignore_attribute_case))
+      if (EqualPossiblyIgnoringASCIICase(name, it->GetName().ToString(),
+                                         should_ignore_attribute_case))
         return index;
     }
   }
   return kNotFound;
 }
 
 }  // namespace blink
 
 #endif  // AttributeCollection_h