Update the protocol buffer compiler plug-in library to the latest Dart SDK

test/file_generator_test.dart

Index: test/file_generator_test.dart
diff --git a/test/file_generator_test.dart b/test/file_generator_test.dart
index 4c84b3ac856d4cfb527610334514b897d95055dc..91c2cda37b43c94574bc85732820425f5d0e3a5b 100644
--- a/test/file_generator_test.dart
+++ b/test/file_generator_test.dart
@@ -74,8 +74,6 @@ void main() {
 ///
 library test;
 
-import 'dart:typed_data';
-
 import 'package:fixnum/fixnum.dart';
 import 'package:protobuf/protobuf.dart';
 
@@ -129,8 +127,6 @@ class PhoneNumber extends GeneratedMessage {
 ///
 library test;
 
-import 'dart:typed_data';
-
 import 'package:fixnum/fixnum.dart';
 import 'package:protobuf/protobuf.dart';
 
@@ -203,8 +199,6 @@ class PhoneNumber extends GeneratedMessage {
 ///
 library pb_library;
 
-import 'dart:typed_data';
-
 import 'package:fixnum/fixnum.dart';
 import 'package:protobuf/protobuf.dart';
 
@@ -259,8 +253,6 @@ class PhoneNumber extends GeneratedMessage {
 ///
 library test;
 
-import 'dart:typed_data';
-
 import 'package:fixnum/fixnum.dart';
 import 'package:protobuf/protobuf.dart';