Provide enclosing element (method) for local function object, issue 145

compiler/java/com/google/dart/compiler/backend/js/Normalizer.java

Index: compiler/java/com/google/dart/compiler/backend/js/Normalizer.java
diff --git a/compiler/java/com/google/dart/compiler/backend/js/Normalizer.java b/compiler/java/com/google/dart/compiler/backend/js/Normalizer.java
index 49cfada742c67666a1d1ebb68747aaeab81d8140..d34b78d2365ba94c80f3540961a1f804f0f306c3 100644
--- a/compiler/java/com/google/dart/compiler/backend/js/Normalizer.java
+++ b/compiler/java/com/google/dart/compiler/backend/js/Normalizer.java
@@ -682,6 +682,21 @@ public class Normalizer {
       public ClassElement getConstructorType() {
         return enclosingClass;
       }
+
+      @Override
+      public boolean isInterface() {
+        return false;
+      }
+
+      @Override
+      public Iterable<Element> getMembers() {
+        return Collections.emptyList();
+      }
+
+      @Override
+      public Element lookupLocalElement(String name) {
+        return null;
+      }
     }
 
     private DartMethodDefinition createImplicitDefaultConstructor(final ClassElement classElement) {