Extract InterceptorData from JavaScriptBackend.

pkg/compiler/lib/src/js_emitter/lazy_emitter/model_emitter.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.js_emitter.lazy_emitter.model_emitter;
 
 import 'package:js_runtime/shared/embedded_names.dart'
     show
         CREATE_NEW_ISOLATE,
         DEFERRED_LIBRARY_URIS,
@@ skipping 843 matching lines @@
         // functionType, stub1_name, stub1_callName, stub1_code, ...]
         var data = [];
         if (method.aliasName != null) {
           data.add(js.quoteName(method.aliasName));
         }
         data.add(method.code);
         data.add(js.quoteName(method.callName, allowNull: true));
 
         if (method.needsTearOff) {
           MethodElement element = method.element;
-          bool isIntercepted = backend.isInterceptedMethod(element);
+          bool isIntercepted =
+              backend.interceptorData.isInterceptedMethod(element);
           data.add(new js.LiteralBool(isIntercepted));
           data.add(js.quoteName(method.tearOffName));
           data.add((method.functionType));
         }
 
         data.addAll(method.parameterStubs.expand(makeNameCallNameCodeTriplet));
         if (method.canBeApplied) {
           data.add(js.number(method.requiredParameterCount));
           data.add(_encodeOptionalParameterDefaultValues(method));
         }
@@ skipping 393 matching lines @@
   #eagerClasses;
 
   var end = Date.now();
   // print('Setup: ' + (end - start) + ' ms.');
 
   #invokeMain;  // Start main.
 
 })(Date.now(), #code)
 }""";
 }