Handle super-method call

pkg/compiler/lib/src/ssa/codegen_helpers.dart

Index: pkg/compiler/lib/src/ssa/codegen_helpers.dart
diff --git a/pkg/compiler/lib/src/ssa/codegen_helpers.dart b/pkg/compiler/lib/src/ssa/codegen_helpers.dart
index 99d26797954e6c226a8e06508c1236790f34fd0a..85be9f0822972b771dc9018fd7eca8e7a3dae14e 100644
--- a/pkg/compiler/lib/src/ssa/codegen_helpers.dart
+++ b/pkg/compiler/lib/src/ssa/codegen_helpers.dart
@@ -3,7 +3,7 @@
 // BSD-style license that can be found in the LICENSE file.
 
 import '../constants/values.dart';
-import '../elements/elements.dart';
+import '../elements/entities.dart';
 import '../js_backend/js_backend.dart';
 import '../js_backend/interceptor_data.dart';
 import '../options.dart';
@@ -425,7 +425,7 @@ class SsaInstructionMerger extends HBaseVisitor {
   }
 
   void visitInvokeSuper(HInvokeSuper instruction) {
-    MemberElement superMethod = instruction.element;
+    MemberEntity superMethod = instruction.element;
     Selector selector = instruction.selector;
     // If aliased super members cannot be used, we will generate code like
     //