Fix unresolved identifier impact to include symbols

pkg/compiler/lib/src/js_backend/backend_impact.dart

Index: pkg/compiler/lib/src/js_backend/backend_impact.dart
diff --git a/pkg/compiler/lib/src/js_backend/backend_impact.dart b/pkg/compiler/lib/src/js_backend/backend_impact.dart
index 7b128391f631380c2c575f4c15cd5897bb2e885d..975ce12bc0fb282b501c3ca697fd2f8b331b70ff 100644
--- a/pkg/compiler/lib/src/js_backend/backend_impact.dart
+++ b/pkg/compiler/lib/src/js_backend/backend_impact.dart
@@ -161,10 +161,16 @@ class BackendImpacts {
 
   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,