Initial implementation of MemoryIndexStoreImpl and IndexContributor.

editor/tools/plugins/com.google.dart.engine/src/com/google/dart/engine/ast/VariableDeclaration.java

Index: editor/tools/plugins/com.google.dart.engine/src/com/google/dart/engine/ast/VariableDeclaration.java
diff --git a/editor/tools/plugins/com.google.dart.engine/src/com/google/dart/engine/ast/VariableDeclaration.java b/editor/tools/plugins/com.google.dart.engine/src/com/google/dart/engine/ast/VariableDeclaration.java
index 0deb91b136123c08648603cf07c23266d93c6baa..d488da746515f2937dc85391fbc29dc0c764a96c 100644
--- a/editor/tools/plugins/com.google.dart.engine/src/com/google/dart/engine/ast/VariableDeclaration.java
+++ b/editor/tools/plugins/com.google.dart.engine/src/com/google/dart/engine/ast/VariableDeclaration.java
@@ -13,6 +13,7 @@
  */
 package com.google.dart.engine.ast;
 
+import com.google.dart.engine.element.VariableElement;
 import com.google.dart.engine.scanner.Token;
 
 import java.util.List;
@@ -67,6 +68,16 @@ public class VariableDeclaration extends Declaration {
     return visitor.visitVariableDeclaration(this);
   }
 
+  /**
+   * Return the {@link VariableElement} associated with this variable, or {@code null} if the AST
+   * structure has not been resolved.
+   * 
+   * @return the {@link VariableElement} associated with this variable
+   */
+  public VariableElement getElement() {
+    return name != null ? (VariableElement) name.getElement() : null;
+  }
+
   @Override
   public Token getEndToken() {
     if (initializer != null) {
@@ -142,4 +153,5 @@ public class VariableDeclaration extends Declaration {
   protected Token getFirstTokenAfterCommentAndMetadata() {
     return name.getBeginToken();
   }
+
 }