Using 'interface' and 'abstract' for methods should produce error

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

Index: compiler/java/com/google/dart/compiler/resolver/ResolverErrorCode.java
diff --git a/compiler/java/com/google/dart/compiler/resolver/ResolverErrorCode.java b/compiler/java/com/google/dart/compiler/resolver/ResolverErrorCode.java
index 7b7c295820e92bc6acf4a5a9dafb71044ac89c34..5d6e70d89dd8520cf3d4f80605b5024abfb7f160 100644
--- a/compiler/java/com/google/dart/compiler/resolver/ResolverErrorCode.java
+++ b/compiler/java/com/google/dart/compiler/resolver/ResolverErrorCode.java
@@ -57,7 +57,6 @@ public enum ResolverErrorCode implements ErrorCode {
   CIRCULAR_REFERENCE(
       "Circular reference detected:  compile-time constants cannot reference themselves."),
   CONST_REQUIRES_VALUE("Constant fields must have an initial value"),
-  CONSTRUCTOR_CANNOT_BE_ABSTRACT("A constructor cannot be abstract"),
   CONSTRUCTOR_CANNOT_BE_STATIC("A constructor cannot be static"),
   CONSTRUCTOR_CANNOT_HAVE_RETURN_TYPE("Generative constructors cannot have return type"),
   CONST_AND_NONCONST_CONSTRUCTOR("Cannot reference to non-const constructor."),
@@ -123,8 +122,6 @@ public enum ResolverErrorCode implements ErrorCode {
   ILLEGAL_ACCESS_TO_PRIVATE("'%s' is private and not defined in this library"),
   // TODO(zundel): error message needs JUnit test - how to test #imports in junit?
   ILLEGAL_ACCESS_TO_PRIVATE_MEMBER("\"%s\" refers to \"%s\" which is in a different library"),
-  ILLEGAL_CONSTRUCTOR_NO_DEFAULT_IN_INTERFACE(
-      "Illegal constructor declaration.  No default clause in interface"),
   ILLEGAL_FIELD_ACCESS_FROM_STATIC("Illegal access of instance field %s from static scope"),
   ILLEGAL_METHOD_ACCESS_FROM_STATIC("Illegal access of instance method %s from static scope"),
   INIT_FIELD_ONLY_IMMEDIATELY_SURROUNDING_CLASS(