Simplify various name flavors in VM.

runtime/vm/class_finalizer.cc

 // Copyright (c) 2013, 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 "vm/class_finalizer.h"
 
 #include "vm/code_generator.h"
 #include "vm/flags.h"
 #include "vm/heap.h"
 #include "vm/isolate.h"
@@ skipping 2241 matching lines @@
     func ^= functions.At(i);
     if (func.IsGenerativeConstructor()) {
       // A mixin class must not have explicit constructors.
       if (!func.IsImplicitConstructor()) {
         const Script& script = Script::Handle(cls.script());
         const Error& error = Error::Handle(
             LanguageError::NewFormatted(Error::Handle(),
                 script, func.token_pos(), Report::AtLocation,
                 Report::kError, Heap::kNew,
                 "constructor '%s' is illegal in mixin class %s",
-                String::Handle(func.PrettyName()).ToCString(),
+                String::Handle(func.UserVisibleName()).ToCString(),
                 String::Handle(zone, mixin_cls.Name()).ToCString()));
 
         ReportErrors(error, cls, cls.token_pos(),
                      "mixin class '%s' must not have constructors",
                      String::Handle(zone, mixin_cls.Name()).ToCString());
       }
       continue;  // Skip the implicit constructor.
     }
     if (!func.is_static() &&
         !func.IsMethodExtractor() &&
@@ skipping 1042 matching lines @@
   ASSERT(fields_array.Length() == ByteBuffer::NumberOfFields());
   field ^= fields_array.At(0);
   ASSERT(field.Offset() == ByteBuffer::data_offset());
   name ^= field.name();
   expected_name ^= String::New("_data");
   ASSERT(String::EqualsIgnoringPrivateKey(name, expected_name));
 #endif
 }
 
 }  // namespace dart