Handle deserialized compilation of closures

pkg/compiler/lib/src/common/resolution.dart

 // Copyright (c) 2012, 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 dart2js.common.resolution;
 
 import '../common.dart';
 import '../compiler.dart' show Compiler;
 import '../constants/expressions.dart' show ConstantExpression;
 import '../core_types.dart' show CoreTypes;
@@ skipping 170 matching lines @@
   }
 
   String toString() {
     return 'ListLiteralUse($type,isConstant:$isConstant,isEmpty:$isEmpty)';
   }
 }
 
 /// Interface for the accessing the front-end analysis.
 // TODO(johnniwinther): Find a better name for this.
 abstract class Frontend {
+  /// Returns `true` if [element] has a [ResolvedAst].
+  bool hasResolvedAst(Element element);
+
   /// Returns the `ResolvedAst` for the [element].
   ResolvedAst getResolvedAst(Element element);
 
   /// Returns the [ResolutionImpact] for [element].
   ResolutionImpact getResolutionImpact(Element element);
 }
 
 // TODO(johnniwinther): Rename to `Resolver` or `ResolverContext`.
 abstract class Resolution implements Frontend {
   ParsingContext get parsingContext;
@@ skipping 101 matching lines @@
       if (cls.isPatch) {
         patchParser.parsePatchClassNode(cls);
       }
     });
   }
 
   @override
   ScannerOptions getScannerOptionsFor(Element element) => new ScannerOptions(
       canUseNative: backend.canLibraryUseNative(element.library));
 }