Prepare for decoupling analyzer ASTs from element model.

pkg/analyzer/test/src/summary/resynthesize_common.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 test.src.serialization.elements_test;
 
 import 'package:analyzer/dart/ast/ast.dart';
+import 'package:analyzer/dart/ast/standard_resolution_map.dart';
 import 'package:analyzer/dart/constant/value.dart';
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/dart/element/type.dart';
 import 'package:analyzer/error/error.dart';
 import 'package:analyzer/src/dart/ast/ast.dart';
 import 'package:analyzer/src/dart/element/element.dart';
 import 'package:analyzer/src/dart/element/handle.dart';
 import 'package:analyzer/src/dart/element/member.dart';
 import 'package:analyzer/src/dart/element/type.dart';
 import 'package:analyzer/src/error/codes.dart';
@@ skipping 368 matching lines @@
             o.prefix.staticElement is ClassElement) {
           compareConstAsts(r, o.identifier, desc);
         } else {
           fail('Prefix of type ${o.prefix.staticElement.runtimeType} should not'
               ' have been elided');
         }
       } else if (o is SimpleIdentifier && r is PrefixedIdentifier) {
         // In 'class C {static const a = 0; static const b = a;}' the reference
         // to 'a' in 'b' is serialized as a fully qualified 'C.a' reference.
         if (r.prefix.staticElement is ClassElement) {
+          Element oElement = resolutionMap.staticElementForIdentifier(o);
           compareElements(
-              r.prefix.staticElement, o.staticElement?.enclosingElement, desc);
+              r.prefix.staticElement, oElement?.enclosingElement, desc);
           compareConstAsts(r.identifier, o, desc);
         } else {
           fail('Prefix of type ${r.prefix.staticElement.runtimeType} should not'
               ' have been elided');
         }
       } else if (o is PropertyAccess &&
           o.target is PrefixedIdentifier &&
           r is PrefixedIdentifier) {
         // We don't resynthesize prefixed identifiers when the prefix refers to
         // a PrefixElement or a ClassElement.  Which means that if the original
@@ skipping 4420 matching lines @@
       fail('Unexpectedly tried to get unlinked summary for $uri');
     }
     return serializedUnit;
   }
 
   @override
   bool hasLibrarySummary(String uri) {
     return true;
   }
 }