Initial binding of RenameRefactoring service to Eclipse.

editor/tools/plugins/com.google.dart.engine.services/src/com/google/dart/engine/services/refactoring/RenameRefactoring.java

Index: editor/tools/plugins/com.google.dart.engine.services/src/com/google/dart/engine/services/refactoring/RenameRefactoring.java
diff --git a/editor/tools/plugins/com.google.dart.engine.services/src/com/google/dart/engine/services/refactoring/RenameRefactoring.java b/editor/tools/plugins/com.google.dart.engine.services/src/com/google/dart/engine/services/refactoring/RenameRefactoring.java
index 7a59cfe7aa466f51c90a29a5aecd2f25dc3a5cce..a77e83180129eff8ebd6ff03244688e68e40d2f6 100644
--- a/editor/tools/plugins/com.google.dart.engine.services/src/com/google/dart/engine/services/refactoring/RenameRefactoring.java
+++ b/editor/tools/plugins/com.google.dart.engine.services/src/com/google/dart/engine/services/refactoring/RenameRefactoring.java
@@ -15,12 +15,28 @@
 package com.google.dart.engine.services.refactoring;
 
 import com.google.dart.engine.element.Element;
+import com.google.dart.engine.services.status.RefactoringStatus;
 
 /**
  * Abstract {@link Refactoring} to rename some {@link Element}.
  */
 public abstract class RenameRefactoring extends Refactoring {
   /**
+   * Validates new {@link Element} name.
+   */
+  public abstract RefactoringStatus checkNewName(String newName);
+
+  /**
+   * @return the current name for the {@link Element}.
+   */
+  public abstract String getCurrentName();
+
+  /**
+   * @return the new name for the {@link Element}.
+   */
+  public abstract String getNewName();
+
+  /**
    * Sets the new name for the {@link Element}.
    */
   public abstract void setNewName(String newName);