Add Accessor, Getter, and Setter elements.

pkg/compiler/lib/src/patch_parser.dart

 // 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.
 
 /**
  * This library contains the infrastructure to parse and integrate patch files.
  *
  * Three types of elements can be patched: [LibraryElement], [ClassElement],
  * [FunctionElement]. Patches are introduced in patch libraries which are loaded
  * together with the corresponding origin library. Which libraries that are
@@ skipping 110 matching lines @@
     show Compiler,
          CompilerTask,
          DiagnosticListener,
          MessageKind,
          Script;
 import 'elements/elements.dart';
 import 'elements/modelx.dart'
     show LibraryElementX,
          MetadataAnnotationX,
          ClassElementX,
-         FunctionElementX;
+         BaseFunctionElementX;
 import 'helpers/helpers.dart';  // Included for debug helpers.
 import 'library_loader.dart' show LibraryLoader;
 import 'scanner/scannerlib.dart';  // Scanner, Parsers, Listeners
 import 'util/util.dart';
 
 class PatchParserTask extends CompilerTask {
   final String name = "Patching Parser";
 
   PatchParserTask(Compiler compiler): super(compiler);
 
@@ skipping 392 matching lines @@
         MessageKind.PATCH_NON_FUNCTION, {'functionName': patch.name});
     listener.reportInfo(
         patch,
         MessageKind.PATCH_POINT_TO_FUNCTION, {'functionName': patch.name});
     return;
   }
   patchFunction(listener, origin, patch);
 }
 
 void patchFunction(DiagnosticListener listener,
-                   FunctionElementX origin,
-                   FunctionElementX patch) {
+                   BaseFunctionElementX origin,
+                   BaseFunctionElementX patch) {
   if (!origin.modifiers.isExternal) {
     listener.reportError(origin, MessageKind.PATCH_NON_EXTERNAL);
     listener.reportInfo(
         patch,
         MessageKind.PATCH_POINT_TO_FUNCTION, {'functionName': patch.name});
     return;
   }
   if (origin.isPatched) {
     listener.internalError(origin,
         "Trying to patch a function more than once.");
   }
   origin.applyPatch(patch);
 }
 
 PatchVersion getPatchVersion(Compiler compiler, Element element) {
   return EagerAnnotationHandler.checkAnnotation(compiler, element,
       const PatchAnnotationHandler());
 }
 
 class PatchVersion {
   final String tag;
 
   const PatchVersion(this.tag);
 
   bool isActive(String patchTag) => tag == null || tag == patchTag;
 
   String toString() => 'PatchVersion($tag)';
 }