Issue 3753. Support for @deprecated annotation

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 10a8451d330a218f9970ab372cc111f7b066893c..463178e8e101dcbdb858d7c33ca25ca5d36d2928 100644
--- a/compiler/java/com/google/dart/compiler/resolver/TypeErrorCode.java
+++ b/compiler/java/com/google/dart/compiler/resolver/TypeErrorCode.java
@@ -20,6 +20,7 @@ public enum TypeErrorCode implements ErrorCode {
   CANNOT_OVERRIDE_METHOD_NOT_SUBTYPE("cannot override %s of %s because %s is not a subtype of %s"),
   CYCLIC_REFERENCE_TO_TYPE_VARIABLE(
       "Invalid type expression, cyclic reference to type variable '%s'"),
+  DEPRECATED_ELEMENT("'%s' is deprecated"),
   DEFAULT_CONSTRUCTOR_TYPES(
       "Constructor '%s' in '%s' has parameters types (%s), doesn't match '%s' in '%s' with (%s)"),
   DUPLICATE_NAMED_ARGUMENT("Named parameter argument already provided as positional argument"),