Revert "Add support for the new function-type syntax."

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.
 
 import '../common.dart';
 import '../common/backend_api.dart' show BackendClasses, ForeignResolver;
 import '../common/resolution.dart' show ParsingContext, Resolution;
 import '../compiler.dart' show Compiler;
 import '../compile_time_constants.dart' show ConstantEnvironment;
 import '../constants/expressions.dart';
@@ skipping 244 matching lines @@
   ///    <gvn-string> values are 'true' and 'false'. The default if unspecified
   ///    is 'false'.
   ///
   ///    <new-string> values are 'true' and 'false'. The default if unspecified
   ///    is 'false'. A 'true' value means that each evaluation returns a fresh
   ///    (new) object that cannot be unaliased with existing objects.
   ///
   ///    Each tag kind (including the 'type-tag's) can only occur once in the
   ///    sequence.
   ///
-  /// [specString] is the specification string, [lookupType] resolves named
+  /// [specString] is the specification string, [resolveType] resolves named
   /// types into type values, [typesReturned] and [typesInstantiated] collects
   /// the types defined by the specification string, and [objectType] and
   /// [nullType] define the types for `Object` and `Null`, respectively. The
   /// latter is used for the type strings of the form '' and 'var'.
   /// [validTags] can be used to restrict which tags are accepted.
   static void processSpecString(
       DiagnosticReporter reporter, Spannable spannable, String specString,
       {Iterable<String> validTags,
       void setSideEffects(SideEffects newEffects),
       void setThrows(NativeThrowBehavior throwKind),
@@ skipping 782 matching lines @@
     JavaScriptBackend backend = compiler.backend;
     return backend.helpers;
   }
 
   @override
   BackendClasses get backendClasses => compiler.backend.backendClasses;
 
   @override
   Resolution get resolution => compiler.resolution;
 }