Move invokeOn to InstanceMirror.

dart/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 259 matching lines @@
 
   /**
    * If the [InstanceMirror] reflects an instance it is meaningful to
    * have a local reference to, we provide access to the actual
    * instance here.
    *
    * If you access [reflectee] when [hasReflectee] is false, an
    * exception is thrown.
    */
   get reflectee;
+
+  /**
+   * Perform [invocation] on [reflectee].
+   *
+   * If [reflectee] doesn't support the invocation, its [noSuchMethod]
+   * method will be called with either [invocation] or another
+   * equivalent instance of [Invocation].
+   */
+  delegate(Invocation invocation);
 }
 
 /**
  * A [ClosureMirror] reflects a closure.
  *
  * A [ClosureMirror] provides access to its captured variables and
  * provides the ability to execute its reflectee.
  */
 abstract class ClosureMirror implements InstanceMirror {
   /**
@@ skipping 523 matching lines @@
   /**
    * Is [:true:] if this comment is a documentation comment.
    *
    * That is, that the comment is either enclosed in [: /** ... */ :] or starts
    * with [: /// :].
    */
   final bool isDocComment;
 
   const Comment(this.text, this.trimmedText, this.isDocComment);
 }