fix cascade on ThisExpression

test/browser/language_tests.js

 // 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.
 
 (function() {
   'use strict';
 
   let _isolate_helper = dart_library.import('dart/_isolate_helper');
   _isolate_helper.startRootIsolate(function() {}, []);
   let async_helper = dart_library.import('async_helper/async_helper');
@@ skipping 17 matching lines @@
             testCase = (testCase < 10 ? '0' : '') + testCase;
           }
           dartLanguageTest(`${multitestName}_${testCase}_multi`);
         }
       } else {
         dartLanguageTest(name);
       }
     }
   }
 
+  suite('cascade', () => {
+    dartLanguageTests(['cascade_in_expression_function_test']);
+  });
+
   suite('null aware ops', () => {
     dartLanguageTests([
       ['conditional_method_invocation_test', 'none', 1, 2, 3, 4],
       ['conditional_property_access_test', 'none', 1, 2, 3],
       ['conditional_property_assignment_test', 'none', 1, 2, 3, 7, 8, 9],
       ['conditional_property_increment_decrement_test',
           'none', 1, 2, 3, 5, 6, 7, 9, 10, 11, 13, 14, 15],
       ['if_null_assignment_behavior_test', 'none',
           1, 2, 5, 6, 7, 8, 9, 10, 11, 12, 16, 17, 18, 19, 20, 21, 22, 23, 24,
           25, 26, 27, 28, 31, 32],
@@ skipping 65 matching lines @@
       'export_main_override_test',
       'export_main_test',
       'export_test',
       'local_export_test',
       'reexport_core_test',
       'top_level_entry_test'
     ]);
   });
 
 })();