Fix wrong type annotation in incremental compiler.

pkg/dart2js_incremental/lib/library_updater.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.
 
 library dart2js_incremental.library_updater;
 
 import 'dart:async' show
     Future;
 
 import 'dart:convert' show
@@ skipping 50 matching lines @@
 import 'package:compiler/src/js_emitter/js_emitter.dart' show
     ClassBuilder,
     ClassEmitter,
     CodeEmitterTask,
     ContainerBuilder,
     MemberInfo,
     computeMixinClass;
 
 import 'package:compiler/src/js_emitter/model.dart' show
     Class,
-    Member;
+    Method;
 
 import 'package:compiler/src/js_emitter/program_builder.dart' show
     ProgramBuilder;
 
 import 'package:_internal/compiler/js_lib/shared/embedded_names.dart'
     as embeddedNames;
 
 import 'package:compiler/src/js_backend/js_backend.dart' show
     JavaScriptBackend,
     Namer;
@@ skipping 844 matching lines @@
 (new Function(
     "$collectedClasses", "$desc",
     this.defineClass(#name, #computeFields) +"\n;return " + #name))(
         {#name: #descriptor})''',
         {'name': js.string(name),
          'computeFields': js.stringArray(computeFields(cls)),
          'descriptor': descriptor});
   }
 
   jsAst.Node computeMethodUpdateJs(Element element) {
-    Member member = new ProgramBuilder(compiler, namer, emitter)
+    Method member = new ProgramBuilder(compiler, namer, emitter)
         .buildMethodHackForIncrementalCompilation(element);
     if (member == null) {
       compiler.internalError(element, '${element.runtimeType}');
     }
     ClassBuilder builder = new ClassBuilder(element, namer);
     containerBuilder.addMemberMethod(member, builder);
     jsAst.Node partialDescriptor =
         builder.toObjectInitializer(emitClassDescriptor: false);
 
     String name = member.name;
@@ skipping 534 matching lines @@
         .buildClassWithFieldsForIncrementalCompilation(classElement);
     // TODO(ahe): Rewrite for new emitter.
     ClassBuilder builder = new ClassBuilder(classElement, namer);
     classEmitter.emitFields(cls, builder);
     return builder.fields;
   }
 }
 
 // TODO(ahe): Remove this method.
 NO_WARN(x) => x;