Add support for redirectedConstructor to summaries.

pkg/analyzer/lib/src/summary/idl.dart

 // Copyright (c) 2015, 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.
 
 /**
  * This file is an "idl" style description of the summary format.  It
  * contains abstract classes which declare the interface for reading data from
  * summaries.  It is parsed and transformed into code that implements the
  * summary format.
  *
@@ skipping 1015 matching lines @@
    * Indicates whether the executable is declared using the `external` keyword.
    */
   bool get isExternal;
 
   /**
    * Indicates whether the executable is declared using the `factory` keyword.
    */
   bool get isFactory;
 
   /**
+   * Indicates whether the executable is a redirected constructor.
+   */
+  bool get isRedirectedConstructor;
+
+  /**
    * Indicates whether the executable is declared using the `static` keyword.
    *
    * Note that for top level executables, this flag is false, since they are
    * not declared using the `static` keyword (even though they are considered
    * static for semantic purposes).
    */
   bool get isStatic;
 
   /**
    * The kind of the executable (function/method, getter, setter, or
@@ skipping 18 matching lines @@
   int get nameOffset;
 
   /**
    * Parameters of the executable, if any.  Note that getters have no
    * parameters (hence this will be the empty list), and setters have a single
    * parameter.
    */
   List<UnlinkedParam> get parameters;
 
   /**
+   * If [isRedirectedConstructor] and [isFactory] are both `true`, the
+   * constructor to which this constructor redirects; otherwise empty.
+   */
+  EntityRef get redirectedConstructor;
+
+  /**
+   * If [isRedirectedConstructor] is `true` and [isFactory] is `false`, the
+   * name of the constructor that this constructor redirects to; otherwise
+   * empty.
+   */
+  String get redirectedConstructorName;
+
+  /**
    * Declared return type of the executable.  Absent if the executable is a
    * constructor or the return type is implicit.
    */
   EntityRef get returnType;
 
   /**
    * Type parameters of the executable, if any.  Empty if support for generic
    * method syntax is disabled.
    */
   List<UnlinkedTypeParam> get typeParameters;
@@ skipping 573 matching lines @@
    *
    * Non-propagable variables have a [propagatedTypeSlot] of zero.
    */
   int get propagatedTypeSlot;
 
   /**
    * Declared type of the variable.  Absent if the type is implicit.
    */
   EntityRef get type;
 }