Remove static state.

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 41 matching lines @@
 
   /// [DartType]s or [SpecialType]s instantiated by the native element.
   final List typesInstantiated = [];
 
   // If this behavior is for a JS expression, [codeTemplate] contains the
   // parsed tree.
   js.Template codeTemplate;
 
   final SideEffects sideEffects = new SideEffects.empty();
 
-  static NativeBehavior NONE = new NativeBehavior();
-
   /// Processes the type specification string of a call to JS and stores the
   /// result in the [typesReturned] and [typesInstantiated].
   ///
   /// Two forms of the string is supported:
   /// 1) A single type string of the form 'void', '', 'var' or 'T1|...|Tn'
   ///    which defines the types returned and for the later form also created by
   ///    the call to JS.
   /// 2) A sequence of the form '<tag>:<type-string>;' where <tag> is either
   ///    'returns' or 'creates' and where <type-string> is a type string like in
   ///    1). The type string marked by 'returns' defines the types returned and
@@ skipping 355 matching lines @@
     compiler.internalError(
         _errorNode(locationNodeOrElement, compiler),
         "Type '$typeString' not found.");
   }
 
   static _errorNode(locationNodeOrElement, compiler) {
     if (locationNodeOrElement is Node) return locationNodeOrElement;
     return locationNodeOrElement.parseNode(compiler);
   }
 }