Use Element instead of Symbol.

compiler/javatests/com/google/dart/compiler/resolver/ResolverTestCase.java

 // Copyright (c) 2012, 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.resolver;
 
 import com.google.common.base.Joiner;
 import com.google.common.base.Splitter;
 import com.google.common.collect.Lists;
 import com.google.dart.compiler.DartCompilationError;
@@ skipping 116 matching lines @@
 
   static DartParameterizedTypeNode makeDefault(String name) {
     return new DartParameterizedTypeNode(new DartIdentifier(name), null);
   }
 
   private static DartTypeParameter makeTypeVariable(String name) {
     return new DartTypeParameter(new DartIdentifier(name), null);
   }
 
   /**
-   * Look for  DartIdentifier nodes in the tree whose symbols are null.  They should all either
+   * Look for  DartIdentifier nodes in the tree whose elements are null.  They should all either
    * be resolved, or marked as an unresolved element.
    */
   static class ResolverAuditVisitor extends ASTVisitor<Void> {
     private List<String> failures = Lists.newArrayList();
 
     @Override
     public Void visitIdentifier(DartIdentifier node) {
 
-      if (node.getSymbol() == null) {
-        failures.add("Identifier: " + node.getTargetName() + " has null symbol @ ("
+      if (node.getElement() == null) {
+        failures.add("Identifier: " + node.getName() + " has null element @ ("
             + node.getSourceLine() + ":" + node.getSourceColumn() + ")");
       }
       return null;
     }
 
     public List<String> getFailures() {
       return failures;
     }
 
     public static void exec(DartNode root) {
       ResolverAuditVisitor visitor = new ResolverAuditVisitor();
       root.accept(visitor);
       List<String> results = visitor.getFailures();
       if (results.size() > 0) {
-        StringBuilder out = new StringBuilder("Missing symbols found in AST\n");
+        StringBuilder out = new StringBuilder("Missing elements found in AST\n");
         Joiner.on("\n").appendTo(out, results);
         fail(out.toString());
       }
     }
   }
 
   static class MockCoreTypeProvider implements CoreTypeProvider {
 
     private final InterfaceType boolType;
     private final InterfaceType intType;
@@ skipping 341 matching lines @@
       public void onError(DartCompilationError event) {
         resolveErrors.add(event);
       }
     };
     // resolve and check errors
     resolveCompileTimeConst(unit, ctx);
     ErrorExpectation.assertErrors(resolveErrors, expectedErrors);
     return resolveErrors;
   }
 }