Move computeType to TypedElement and TypeDeclarationElement.

pkg/compiler/lib/src/native/behavior.dart

 // Copyright (c) 2014, 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.
 
 part of native;
 
 /// This class is a temporary work-around until we get a more powerful DartType.
 class SpecialType {
   final String name;
   const SpecialType._(this.name);
@@ skipping 613 matching lines @@
     // removed.
     method.functionSignature.forEachOptionalParameter(
         (ParameterElement parameter) {
           behavior._escape(parameter.type, compiler);
         });
 
     behavior._overrideWithAnnotations(method, compiler);
     return behavior;
   }
 
-  static NativeBehavior ofFieldLoad(Element field, Compiler compiler) {
+  static NativeBehavior ofFieldLoad(MemberElement field, Compiler compiler) {
     DartType type = field.computeType(compiler);
     var behavior = new NativeBehavior();
     behavior.typesReturned.add(type);
     // Declared types are nullable.
     behavior.typesReturned.add(compiler.nullClass.computeType(compiler));
     behavior._capture(type, compiler);
     behavior._overrideWithAnnotations(field, compiler);
     return behavior;
   }
 
-  static NativeBehavior ofFieldStore(Element field, Compiler compiler) {
+  static NativeBehavior ofFieldStore(MemberElement field, Compiler compiler) {
     DartType type = field.computeType(compiler);
     var behavior = new NativeBehavior();
     behavior._escape(type, compiler);
     // We don't override the default behaviour - the annotations apply to
     // loading the field.
     return behavior;
   }
 
   void _overrideWithAnnotations(Element element, Compiler compiler) {
     if (element.metadata.isEmpty) return;
@@ skipping 115 matching lines @@
         MessageKind.GENERIC,
         {'text': "Type '$typeString' not found."});
     return const DynamicType();
   }
 
   static _errorNode(locationNodeOrElement, compiler) {
     if (locationNodeOrElement is Node) return locationNodeOrElement;
     return locationNodeOrElement.parseNode(compiler);
   }
 }