Report DUPLICATE_CONSTRUCTOR_NAME and other scope fixes

editor/tools/plugins/com.google.dart.engine/src/com/google/dart/engine/error/CompileTimeErrorCode.java

Index: editor/tools/plugins/com.google.dart.engine/src/com/google/dart/engine/error/CompileTimeErrorCode.java
diff --git a/editor/tools/plugins/com.google.dart.engine/src/com/google/dart/engine/error/CompileTimeErrorCode.java b/editor/tools/plugins/com.google.dart.engine/src/com/google/dart/engine/error/CompileTimeErrorCode.java
index cbb3ef955352a17c04f6d1f6118cdff9102267fd..fac71f90e30148be3d6c48d43b7fa414a1a3fcc3 100644
--- a/editor/tools/plugins/com.google.dart.engine/src/com/google/dart/engine/error/CompileTimeErrorCode.java
+++ b/editor/tools/plugins/com.google.dart.engine/src/com/google/dart/engine/error/CompileTimeErrorCode.java
@@ -104,7 +104,7 @@ public enum CompileTimeErrorCode implements ErrorCode {
    * class.
    */
   CONFLICTING_CONSTRUCTOR_NAME_AND_FIELD(
-      "'%s' cannot be used to name a constructor and a method in this class"),
+      "'%s' cannot be used to name a constructor and a field in this class"),
 
   /**
    * 7.6 Constructors: A constructor name always begins with the name of its immediately enclosing
@@ -246,6 +246,20 @@ public enum CompileTimeErrorCode implements ErrorCode {
   /**
    * 3.1 Scoping: It is a compile-time error if there is more than one entity with the same name
    * declared in the same scope.
+   */
+  DUPLICATE_CONSTRUCTOR_DEFAULT("The default constructor is already defined"),
+
+  /**
+   * 3.1 Scoping: It is a compile-time error if there is more than one entity with the same name
+   * declared in the same scope.
+   * 
+   * @param duplicateName the name of the duplicate entity
+   */
+  DUPLICATE_CONSTRUCTOR_NAME("The constructor with name '%s' is already defined"),
+
+  /**
+   * 3.1 Scoping: It is a compile-time error if there is more than one entity with the same name
+   * declared in the same scope.
    * 
    * @param duplicateName the name of the duplicate entity
    */