Provide a way to get a Type back from a ClassMirror.

sdk/lib/mirrors/mirrors.dart

 // 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.
 
 // For the purposes of the mirrors library, we adopt a naming
 // convention with respect to getters and setters.  Specifically, for
 // some variable or field...
 //
 //   var myField;
 //
@@ skipping 664 matching lines @@
  * or type variable.
  */
 abstract class TypeMirror implements DeclarationMirror {
 }
 
 /**
  * A [ClassMirror] reflects a Dart language class.
  */
 abstract class ClassMirror implements TypeMirror, ObjectMirror {
   /**
+   * Returns true if this mirror reflects a non-generic class or an instantiated
+   * generic class in the current isolate. Otherwise, returns false.
+   */
+  bool get hasReflectedType;
+
+  /**
+   * If [:hasReflectedType:] returns true, returns the corresponding [Type].
+   * Otherwise, an [UnsupportedError] is thrown.
+   */
+  Type get reflectedType;
+
+  /**
    * A mirror on the superclass on the reflectee.
    *
    * If this type is [:Object:] or a typedef, the superClass will be
    * null.
    */
   ClassMirror get superclass;
 
   /**
    * A list of mirrors on the superinterfaces of the reflectee.
    */
@@ skipping 611 matching lines @@
    *
    * When used as metadata on an import of "dart:mirrors", this metadata does
    * not apply to the library in which the annotation is used, but instead
    * applies to the other libraries (all libraries if "*" is used).
    */
   final override;
 
   const MirrorsUsed(
       {this.symbols, this.targets, this.metaTargets, this.override});
 }