Add support for getters, setters and constructors in declarations of classMirrors.

reflectable/lib/mirrors.dart

 // Copyright (c) 2015, the Dart Team. All rights reserved. Use of this
 // source code is governed by a BSD-style license that can be found in
 // the LICENSE file.
 
 // This file defines the same types as sdk/lib/mirrors/mirrors.dart, in
 // order to enable code using [dart:mirrors] to switch to using
 // [Reflectable] based mirrors with the smallest possible change.
 // The changes are discussed below, under headings on the form
 // 'API Change: ..'.
 
@@ skipping 275 matching lines @@
 
   // Possible ARG: Type.
   // Input from Gilad on isSubtypeOf is also relevant for this case.
   bool isAssignableTo(TypeMirror other);
 }
 
 abstract class ClassMirror implements TypeMirror, ObjectMirror {
   ClassMirror get superclass;
   List<ClassMirror> get superinterfaces;
   bool get isAbstract;
+  // The non-abstract members declared in this class.
   Map<String, DeclarationMirror> get declarations;
   Map<String, MethodMirror> get instanceMembers;
   Map<String, MethodMirror> get staticMembers;
   ClassMirror get mixin;
 
    /**
    * Invokes the named constructor and returns a mirror on the result.
    *
    * Let *c* be the class reflected by this mirror
    * let *a1, ..., an* be the elements of [positionalArguments]
@@ skipping 95 matching lines @@
   int get column;
   Uri get sourceUri;
 }
 
 class Comment {
   final String text;
   final String trimmedText;
   final bool isDocComment;
   const Comment(this.text, this.trimmedText, this.isDocComment);
 }