Record isFinal for parameters into 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 2550 matching lines @@
   @Id(12)
   UnlinkedExecutable get initializer;
 
   /**
    * Indicates whether this parameter is explicitly marked as being covariant.
    */
   @Id(15)
   bool get isExplicitlyCovariant;
 
   /**
+   * Indicates whether the parameter is declared using the `final` keyword.
+   */
+  @Id(16)
+  bool get isFinal;
+
+  /**
    * Indicates whether this is a function-typed parameter.
    */
   @Id(5)
   bool get isFunctionTyped;
 
   /**
    * Indicates whether this is an initializing formal parameter (i.e. it is
    * declared using `this.` syntax).
    */
   @Id(6)
@@ skipping 544 matching lines @@
   @Id(11)
   int get visibleLength;
 
   /**
    * If a local variable, the beginning of the visible range; zero otherwise.
    */
   @informative
   @Id(12)
   int get visibleOffset;
 }