Never return a Dart_Handle on a dart::Class from the embedding API.

runtime/include/dart_mirrors_api.h

 /*
  * 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.
  */
 
 #ifndef INCLUDE_DART_MIRRORS_API_H_
 #define INCLUDE_DART_MIRRORS_API_H_
 
 #include "include/dart_api.h"
 
 
 /**
- * Returns the class name for the provided class.
+ * Returns the simple name for the provided type.
  */
+DART_EXPORT Dart_Handle Dart_TypeName(Dart_Handle type);
 DART_EXPORT Dart_Handle Dart_ClassName(Dart_Handle type);
 
 /**
- * Returns the qualified class name for the provided class.
+ * Returns the qualified name for the provided type.
  */
+DART_EXPORT Dart_Handle Dart_QualifiedTypeName(Dart_Handle type);
 DART_EXPORT Dart_Handle Dart_QualifiedClassName(Dart_Handle type);
 
 /**
  * Returns a list of the names of all functions or methods declared in
  * a library or class.
  *
  * \param target A library or class.
  *
  * \return If no error occurs, a list of strings is returned.
  *   Otherwise an error handle is returned.
@@ skipping 102 matching lines @@
 /**
  * Retrieves the function of a closure.
  *
  * \return A handle to the function of the closure, or an error handle if the
  *   argument is not a closure.
  */
 DART_EXPORT Dart_Handle Dart_ClosureFunction(Dart_Handle closure);
 
 
 #endif  /* INCLUDE_DART_MIRRORS_API_H_ */  /* NOLINT */