Update cache size on analysis start/stop.

pkg/analyzer/lib/src/generated/engine.dart

 // Copyright (c) 2014, 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 code was auto-generated, is not intended to be edited, and is subject to
 // significant change. Please see the README file for more information.
 
 library engine;
 
 import "dart:math" as math;
@@ skipping 6499 matching lines @@
 }
 
 /**
  * Instances of the class `AnalysisOptions` represent a set of analysis options used to
  * control the behavior of an analysis context.
  */
 class AnalysisOptionsImpl implements AnalysisOptions {
   /**
    * The maximum number of sources for which data should be kept in the cache.
    */
-  static int DEFAULT_CACHE_SIZE = 64;
+  static const int DEFAULT_CACHE_SIZE = 64;
 
   /**
    * The default value for enabling deferred loading.
    */
   @deprecated
   static bool DEFAULT_ENABLE_DEFERRED_LOADING = true;
 
   /**
    * The default value for enabling enum support.
    */
@@ skipping 5717 matching lines @@
     if (element.id == _id) {
       result = element;
       throw new _ElementByIdFinderException();
     }
     super.visitElement(element);
   }
 }
 
 class _ElementByIdFinderException {
 }