Issue 1091: Static type warning for setters with non-void return types

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

Index: compiler/java/com/google/dart/compiler/resolver/TypeErrorCode.java
diff --git a/compiler/java/com/google/dart/compiler/resolver/TypeErrorCode.java b/compiler/java/com/google/dart/compiler/resolver/TypeErrorCode.java
index c999a121852fb33cda2cfe23f0d77746bbaa4f96..0a8c9f619455213cbac5da2c80ea1c05a331f6f0 100644
--- a/compiler/java/com/google/dart/compiler/resolver/TypeErrorCode.java
+++ b/compiler/java/com/google/dart/compiler/resolver/TypeErrorCode.java
@@ -39,6 +39,7 @@ public enum TypeErrorCode implements ErrorCode {
   NOT_A_METHOD_IN("\"%s\" is not a method in %s"),
   NOT_A_TYPE("type \"%s\" expected, but \"%s\" found"),
   OPERATOR_WRONG_OPERAND_TYPE("operand of \"%s\" must be assignable to \"%s\""),
+  SETTER_RETURN_TYPE("Specified return type of setter '%s' is non-void"),
   STATIC_MEMBER_ACCESSED_THROUGH_INSTANCE(
       "static member %s of %s cannot be accessed through an instance"),
   SUPERTYPE_HAS_FIELD("%s is a field in %s"),