Support (de)serialization from command-line

tests/compiler/dart2js/serialization/impact_test.dart

Index: tests/compiler/dart2js/serialization/impact_test.dart
diff --git a/tests/compiler/dart2js/serialization/impact_test.dart b/tests/compiler/dart2js/serialization/impact_test.dart
index ea1d11386aad2cb4ae8d2d0b5ddffacb09a359ff..5b062fef79c859c1b680a2a9403e8217626c438a 100644
--- a/tests/compiler/dart2js/serialization/impact_test.dart
+++ b/tests/compiler/dart2js/serialization/impact_test.dart
@@ -7,11 +7,8 @@ library dart2js.serialization_impact_test;
 import 'dart:async';
 import 'package:async_helper/async_helper.dart';
 import 'package:compiler/src/commandline_options.dart';
-import 'package:compiler/src/common/resolution.dart';
 import 'package:compiler/src/compiler.dart';
-import 'package:compiler/src/elements/elements.dart';
 import 'package:compiler/src/filenames.dart';
-import 'package:compiler/src/serialization/equivalence.dart';
 import '../memory_compiler.dart';
 import 'helper.dart';
 import 'test_helper.dart';
@@ -48,7 +45,7 @@ Future check(
       memorySourceFiles: sourceFiles,
       options: [Flags.analyzeAll]);
   compilerDeserialized.resolution.retainCachesForTesting = true;
-  deserialize(compilerDeserialized, serializedData);
+  compilerDeserialized.serialization.deserializeFromText(serializedData);
   await compilerDeserialized.run(entryPoint);
 
   checkAllImpacts(compilerNormal, compilerDeserialized, verbose: verbose);