Use Element instead of Symbol.

compiler/java/com/google/dart/compiler/ast/DartMethodDefinition.java

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 package com.google.dart.compiler.ast;
 
-import com.google.dart.compiler.common.Symbol;
+import com.google.dart.compiler.resolver.Element;
 import com.google.dart.compiler.resolver.MethodElement;
 
 import java.util.Collections;
 import java.util.List;
 
 /**
  * Represents a Dart method definition.
  */
 public class DartMethodDefinition extends DartClassMember<DartExpression> {
 
@@ skipping 15 matching lines @@
   private DartMethodDefinition(DartExpression name, DartFunction function, Modifiers modifiers) {
     super(name, modifiers);
     this.function = becomeParentOf(function);
   }
 
   public DartFunction getFunction() {
     return function;
   }
 
   @Override
-  public MethodElement getSymbol() {
+  public MethodElement getElement() {
     return element;
   }
 
   @Override
-  public void setSymbol(Symbol symbol) {
-    element = (MethodElement) symbol;
+  public void setElement(Element element) {
+    this.element = (MethodElement) element;
   }
 
   public List<DartInitializer> getInitializers() {
     return Collections.emptyList();
   }
 
   @Override
   public void visitChildren(ASTVisitor<?> visitor) {
     super.visitChildren(visitor);
     function.accept(visitor);
@@ skipping 21 matching lines @@
       return initializers;
     }
 
     @Override
     public void visitChildren(ASTVisitor<?> visitor) {
       super.visitChildren(visitor);
       initializers.accept(visitor);
     }
   }
 }