Infer UnlinkedExprOperation.pushThis as dynamic.

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';
@@ skipping 2344 matching lines @@
 
   test_const_topLevel_prefix() {
     checkLibrary(r'''
 const vNotEqual = 1 != 2;
 const vNot = !true;
 const vNegate = -1;
 const vComplement = ~1;
 ''');
   }
 
+  test_const_topLevel_this() {
+    checkLibrary(r'''
+const vThis = this;
+''');
+  }
+
   test_const_topLevel_typedList() {
     checkLibrary(r'''
 const vNull = const <Null>[];
 const vDynamic = const <dynamic>[1, 2, 3];
 const vInterfaceNoTypeParameters = const <int>[1, 2, 3];
 const vInterfaceNoTypeArguments = const <List>[];
 const vInterfaceWithTypeArguments = const <List<String>>[];
 const vInterfaceWithTypeArguments2 = const <Map<int, List<String>>>[];
 ''');
   }
@@ skipping 2642 matching lines @@
       fail('Unexpectedly tried to get unlinked summary for $uri');
     }
     return serializedUnit;
   }
 
   @override
   bool hasLibrarySummary(String uri) {
     return true;
   }
 }