Split NativeData

tests/compiler/dart2js/serialization/native_data_test.dart

 // Copyright (c) 2016, 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.serialization.native_data_test;
 
 import 'dart:async';
 import 'package:async_helper/async_helper.dart';
 import 'package:compiler/src/common/names.dart';
 import 'package:compiler/src/commandline_options.dart';
@@ skipping 29 matching lines @@
   print('analyze deserialized: $uri');
   print('------------------------------------------------------------------');
   Compiler compiler2 = compilerFor(
       memorySourceFiles: serializedData.toMemorySourceFiles(),
       resolutionInputs: serializedData.toUris(),
       options: [Flags.analyzeAll]);
   await compiler2.run(uri);
 
   JavaScriptBackend backend1 = compiler1.backend;
   JavaScriptBackend backend2 = compiler2.backend;
-  NativeData nativeData1 = backend1.nativeData;
-  NativeData nativeData2 = backend2.nativeData;
+  NativeDataImpl nativeData1 = backend1.nativeData;
+  NativeDataImpl nativeData2 = backend2.nativeData;
 
   checkMaps(nativeData1.jsInteropNames, nativeData2.jsInteropNames,
       "NativeData.jsInteropNames", areElementsEquivalent, equality,
       verbose: verbose);
 
   checkMaps(nativeData1.nativeMemberName, nativeData2.nativeMemberName,
       "NativeData.nativeMemberName", areElementsEquivalent, equality,
       verbose: verbose);
 
   checkMaps(nativeData1.nativeClassTagInfo, nativeData2.nativeClassTagInfo,
@@ skipping 17 matching lines @@
       verbose: verbose);
 
   checkMaps(
       nativeData1.nativeFieldStoreBehavior,
       nativeData2.nativeFieldStoreBehavior,
       "NativeData.nativeFieldStoreBehavior",
       areElementsEquivalent,
       testNativeBehavior,
       verbose: verbose);
 }