Extract InterceptorData from JavaScriptBackend.

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

 // Copyright (c) 2013, 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 '../compiler.dart' show Compiler;
 import '../constants/values.dart';
 import '../elements/resolution_types.dart';
 import '../elements/elements.dart';
 import '../universe/use.dart' show StaticUse;
 import '../universe/world_impact.dart'
@@ skipping 58 matching lines @@
     resolutionJoin.allClassesSelected = true;
     codegenJoin.allClassesSelected = true;
   }
 
   CustomElementsAnalysisJoin joinFor({bool forResolution}) =>
       forResolution ? resolutionJoin : codegenJoin;
 
   void registerInstantiatedClass(ClassElement classElement,
       {bool forResolution}) {
     classElement.ensureResolved(compiler.resolution);
-    if (!backend.isNativeOrExtendsNative(classElement)) return;
+    if (!backend.nativeData.isNativeOrExtendsNative(classElement)) return;
     if (classElement.isMixinApplication) return;
     if (classElement.isAbstract) return;
     // JsInterop classes are opaque interfaces without a concrete
     // implementation.
     if (backend.isJsInterop(classElement)) return;
     joinFor(forResolution: forResolution).instantiatedClasses.add(classElement);
   }
 
   void registerTypeLiteral(ResolutionDartType type) {
     if (type.isInterfaceType) {
@@ skipping 62 matching lines @@
   final activeClasses = new Set<ClassElement>();
 
   CustomElementsAnalysisJoin(this.backend);
 
   WorldImpact flush() {
     if (!demanded) return const WorldImpact();
     var newActiveClasses = new Set<ClassElement>();
     for (ClassElement classElement in instantiatedClasses) {
       bool isNative = backend.isNative(classElement);
       bool isExtension =
-          !isNative && backend.isNativeOrExtendsNative(classElement);
+          !isNative && backend.nativeData.isNativeOrExtendsNative(classElement);
       // Generate table entries for native classes that are explicitly named and
       // extensions that fix our criteria.
       if ((isNative && selectedClasses.contains(classElement)) ||
           (isExtension &&
               (allClassesSelected || selectedClasses.contains(classElement)))) {
         newActiveClasses.add(classElement);
         Iterable<ConstructorElement> escapingConstructors =
             computeEscapingConstructors(classElement);
         for (ConstructorElement constructor in escapingConstructors) {
           impactBuilder
@@ skipping 37 matching lines @@
           result.add(member);
         }
       }
     }
 
     classElement.forEachMember(selectGenerativeConstructors,
         includeBackendMembers: false, includeSuperAndInjectedMembers: false);
     return result;
   }
 }