Add demangle utility to Dartium's dart:html. Demangle typedef names in UserVisibleName.

runtime/lib/mirrors.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "lib/invocation_mirror.h"
 #include "vm/bootstrap_natives.h"
 #include "vm/class_finalizer.h"
 #include "vm/compiler.h"
 #include "vm/dart_entry.h"
 #include "vm/exceptions.h"
@@ skipping 232 matching lines @@
 }
 
 
 static RawInstance* CreateTypedefMirror(const Class& cls,
                                         const AbstractType& type,
                                         const Bool& is_declaration,
                                         const Instance& owner_mirror) {
   const Array& args = Array::Handle(Array::New(6));
   args.SetAt(0, MirrorReference::Handle(MirrorReference::New(cls)));
   args.SetAt(1, type);
-  args.SetAt(2, String::Handle(cls.UserVisibleName()));
+  args.SetAt(2, String::Handle(cls.Name()));
   args.SetAt(3, Bool::Get(cls.NumTypeParameters() != 0));
   args.SetAt(4, cls.NumTypeParameters() == 0 ? Bool::False() : is_declaration);
   args.SetAt(5, owner_mirror);
   return CreateMirror(Symbols::_LocalTypedefMirror(), args);
 }
 
 
 static RawInstance* CreateFunctionTypeMirror(const Class& cls,
                                              const AbstractType& type) {
   const Array& args = Array::Handle(Array::New(2));
@@ skipping 1681 matching lines @@
 
 DEFINE_NATIVE_ENTRY(VariableMirror_type, 2) {
   GET_NON_NULL_NATIVE_ARGUMENT(MirrorReference, ref, arguments->NativeArgAt(0));
   const Field& field = Field::Handle(ref.GetFieldReferent());
   GET_NATIVE_ARGUMENT(AbstractType, instantiator, arguments->NativeArgAt(1));
   const AbstractType& type = AbstractType::Handle(field.type());
   return InstantiateType(type, instantiator);
 }
 
 }  // namespace dart