Fix unresolved identifier impact to include symbols

pkg/compiler/lib/src/js_backend/backend_impact.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 dart2js.js_helpers.impact;
 
 import '../common/names.dart';
 import '../compiler.dart' show Compiler;
 import '../core_types.dart' show CommonElements;
 import '../dart_types.dart' show InterfaceType;
@@ skipping 143 matching lines @@
 
   BackendImpact get asCheck {
     return _asCheck ??=
         new BackendImpact(staticUses: [helpers.throwRuntimeError]);
   }
 
   BackendImpact _throwNoSuchMethod;
 
   BackendImpact get throwNoSuchMethod {
     return _throwNoSuchMethod ??= new BackendImpact(
+        instantiatedClasses: compiler.options.useKernel
+            ? [
+                commonElements.symbolClass,
+              ]
+            : [],
         staticUses: compiler.options.useKernel
             ? [
                 helpers.genericNoSuchMethod,
                 helpers.unresolvedConstructorError,
+                commonElements.symbolConstructor.declaration,
               ]
             : [
                 helpers.throwNoSuchMethod,
               ],
         otherImpacts: [
           // Also register the types of the arguments passed to this method.
           _needsList(
               'Needed to encode the arguments for throw NoSuchMethodError.'),
           _needsString('Needed to encode the name for throw NoSuchMethodError.')
         ]);
@@ skipping 537 matching lines @@
 
   BackendImpact _staticClosure;
 
   /// Backend impact for performing closurization of a top-level or static
   /// function.
   BackendImpact get staticClosure {
     return _staticClosure ??=
         new BackendImpact(globalClasses: [helpers.closureClass]);
   }
 }