Another round of JUnit tests to finish off ResovlerErrorCodes I could reproduce

compiler/java/com/google/dart/compiler/resolver/Resolver.java

Index: compiler/java/com/google/dart/compiler/resolver/Resolver.java
diff --git a/compiler/java/com/google/dart/compiler/resolver/Resolver.java b/compiler/java/com/google/dart/compiler/resolver/Resolver.java
index af79b8bdec9e10117a08281ff434c2f620a7dae4..3773b36f3f3f2ec9f01b07b5de12edada96d5dc8 100644
--- a/compiler/java/com/google/dart/compiler/resolver/Resolver.java
+++ b/compiler/java/com/google/dart/compiler/resolver/Resolver.java
@@ -1661,6 +1661,12 @@ public class Resolver {
           break;
         }
 
+        case FIELD: {
+          onError(errorNode, ResolverErrorCode.IS_AN_INSTANCE_FIELD,
+              classOrLibrary.getName(), name);
+          break;
+        }
+
         default:
           throw context.internalError(errorNode, "Unexpected kind of element: %s", kind);
       }