Fix DDC presubmit status.

pkg/dev_compiler/test/browser/runtime_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.
 
 define(['dart_sdk'], function(dart_sdk) {
   const assert = chai.assert;
   const async = dart_sdk.async;
   const core = dart_sdk.core;
   const collection = dart_sdk.collection;
   const dart = dart_sdk.dart;
@@ skipping 685 matching lines @@
       checkType(dart.bind(mapB, 'forEach'),
           dart.fnTypeFuzzy(dart.void, [
               dart.fnTypeFuzzy(dart.void, [core.int, core.int])]));
       checkType(dart.bind(mapB, 'forEach'),
           dart.fnTypeFuzzy(dart.void, [
               dart.fnTypeFuzzy(dart.void, [core.int, core.String])]),
                 false, true);
 
       // Tear off of a method with a symbol name
       let listB = new (c.ListBase$(core.int).new)();
+      // List.add is reified as taking Object
       checkType(dart.bind(listB, dartx.add),
                 dart.fnTypeFuzzy(dart.void, [core.int]));
       checkType(dart.bind(listB, dartx.add),
-                dart.fnTypeFuzzy(dart.void, [core.String]), false, true);
+                dart.fnTypeFuzzy(dart.void, [core.String]), true);
+      checkType(dart.bind(listB, dartx.removeAt),
+                dart.fnTypeFuzzy(dart.void, [core.String]), false);
 
       // Tear off of a static method
       checkType(c.ListBase.listToString,
                 dart.fnTypeFuzzy(core.String, [core.List]));
       checkType(c.ListBase.listToString,
-                dart.fnTypeFuzzy(core.String, [core.String]), false, true);
+                dart.fnTypeFuzzy(core.String, [core.String]), false);
 
       // Tear-off of extension methods on primitives
       checkType(dart.bind(3.0, dartx.floor),
                 dart.fnTypeFuzzy(core.int, []));
       checkType(dart.bind(3.0, dartx.floor),
-                dart.fnTypeFuzzy(core.String, []), false, true);
+                dart.fnTypeFuzzy(core.String, []), false);
       checkType(dart.bind("", dartx.endsWith),
                 dart.fnTypeFuzzy(core.bool, [core.String]));
       checkType(dart.bind("", dartx.endsWith),
-                dart.fnTypeFuzzy(core.bool, [core.int]), false, true);
+                dart.fnTypeFuzzy(core.bool, [core.int]), false);
 
       // Tear off a mixin method
       class Base {
         m(x) {return x;}
       };
       dart.setSignature(Base, {
         methods: () => ({
           m: dart.fnType(core.int, [core.int]),
         })
       });
@@ skipping 506 matching lines @@
       list[0] = 42;
       assert.throws(() => list.add(42));
     });
 
     test('toString on ES Symbol', () => {
       let sym = Symbol('_foobar');
       assert.equal(dart.toString(sym), 'Symbol(_foobar)');
     });
   });
 });