Access NativeData only through ClosedWorld

pkg/compiler/lib/src/js_backend/namer.dart

 // Copyright (c) 2011, 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 js_backend.namer;
 
 import 'dart:collection' show HashMap;
 
 import 'package:js_runtime/shared/embedded_names.dart' show JsGetName;
 
@@ skipping 471 matching lines @@
   jsAst.Name _rtiFieldJsName;
   jsAst.Name get rtiFieldJsName =>
       _rtiFieldJsName ??= new StringBackedName(rtiName);
 
   // Name of property in a class description for the native dispatch metadata.
   final String nativeSpecProperty = '%';
 
   static final RegExp IDENTIFIER = new RegExp(r'^[A-Za-z_$][A-Za-z0-9_$]*$');
   static final RegExp NON_IDENTIFIER_CHAR = new RegExp(r'[^A-Za-z_0-9$]');
 
-  final NativeData _nativeData;
   final ClosedWorld _closedWorld;
   final CodegenWorldBuilder _codegenWorldBuilder;
 
   RuntimeTypesEncoder _rtiEncoder;
   RuntimeTypesEncoder get rtiEncoder {
     assert(invariant(NO_LOCATION_SPANNABLE, _rtiEncoder != null,
         message: "Namer.rtiEncoder has not been set."));
     return _rtiEncoder;
   }
 
@@ skipping 51 matching lines @@
 
   final Map<String, String> suggestedGlobalNames = <String, String>{};
   final Map<String, String> suggestedInstanceNames = <String, String>{};
 
   /// Used to store unique keys for library names. Keys are not used as names,
   /// nor are they visible in the output. The only serve as an internal
   /// key into maps.
   final Map<LibraryElement, String> _libraryKeys =
       new HashMap<LibraryElement, String>();
 
-  Namer(this._nativeData, this._closedWorld, this._codegenWorldBuilder) {
+  Namer(this._closedWorld, this._codegenWorldBuilder) {
     _literalAsyncPrefix = new StringBackedName(asyncPrefix);
     _literalGetterPrefix = new StringBackedName(getterPrefix);
     _literalSetterPrefix = new StringBackedName(setterPrefix);
     _literalLazyGetterPrefix = new StringBackedName(lazyGetterPrefix);
   }
 
   CommonElements get _commonElements => _closedWorld.commonElements;
 
+  NativeData get _nativeData => _closedWorld.nativeData;
+
   String get deferredTypesName => 'deferredTypes';
   String get isolateName => 'Isolate';
   String get isolatePropertiesName => r'$isolateProperties';
   jsAst.Name get noSuchMethodName => invocationName(Selectors.noSuchMethod_);
 
   /**
    * Some closures must contain their name. The name is stored in
    * [STATIC_CLOSURE_NAME_NAME].
    */
   String get STATIC_CLOSURE_NAME_NAME => r'$name';
@@ skipping 1601 matching lines @@
   void addSuggestion(String original, String suggestion) {
     assert(!_suggestedNames.containsKey(original));
     _suggestedNames[original] = suggestion;
   }
 
   bool hasSuggestion(String original) => _suggestedNames.containsKey(original);
   bool isSuggestion(String candidate) {
     return _suggestedNames.containsValue(candidate);
   }
 }