Flush results when contexts are made idle.

pkg/analyzer/lib/task/dart.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.
 
 library analyzer.task.dart;
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/token.dart';
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/src/generated/error.dart';
@@ skipping 84 matching lines @@
         cachingPolicy: AST_CACHING_POLICY);
 
 /**
  * The resolved [CompilationUnit] associated with a compilation unit, with
  * constants resolved.
  *
  * The result is only available for [LibrarySpecificUnit]s.
  */
 final ResultDescriptor<CompilationUnit> RESOLVED_UNIT =
     new ResultDescriptor<CompilationUnit>('RESOLVED_UNIT', null,
-        cachingPolicy: AST_CACHING_POLICY);
+        cachingPolicy: AST_RESOLVED_CACHING_POLICY);
 
 /**
  * The kind of a [Source].
  */
 final ResultDescriptor<SourceKind> SOURCE_KIND =
     new ResultDescriptor<SourceKind>('SOURCE_KIND', SourceKind.UNKNOWN);
 
 /**
  * The token stream produced while scanning a compilation unit.
  *
@@ skipping 59 matching lines @@
   @override
   bool operator ==(other) {
     return other is LibrarySpecificUnit &&
         other.library == library &&
         other.unit == unit;
   }
 
   @override
   String toString() => '$unit in $library';
 }