Remove references to Engine classes from protocol.dart

pkg/analysis_server/test/computer/error_test.dart

Index: pkg/analysis_server/test/computer/error_test.dart
diff --git a/pkg/analysis_server/test/computer/error_test.dart b/pkg/analysis_server/test/computer/error_test.dart
index e83f9b28b1216acb7fde989461a82d6292428499..d92766270fc0b684c62208c08f72b014a581a37a 100644
--- a/pkg/analysis_server/test/computer/error_test.dart
+++ b/pkg/analysis_server/test/computer/error_test.dart
@@ -5,7 +5,7 @@
 library test.computer.error;
 
 import 'package:analysis_server/src/constants.dart';
-import 'package:analysis_server/src/protocol.dart';
+import 'package:analysis_server/src/protocol_server.dart';
 import 'package:analyzer/src/generated/error.dart' as engine;
 import 'package:analyzer/src/generated/source.dart';
 import 'package:typed_mock/typed_mock.dart';
@@ -54,7 +54,7 @@ class AnalysisErrorTest {
 
   void test_fromEngine_hasCorrection() {
     when(engineError.correction).thenReturn('my correction');
-    AnalysisError error = new AnalysisError.fromEngine(lineInfo, engineError);
+    AnalysisError error = newAnalysisError_fromEngine(lineInfo, engineError);
     expect(error.toJson(), {
       SEVERITY: 'ERROR',
       TYPE: 'COMPILE_TIME_ERROR',
@@ -72,7 +72,7 @@ class AnalysisErrorTest {
 
   void test_fromEngine_noCorrection() {
     when(engineError.correction).thenReturn(null);
-    AnalysisError error = new AnalysisError.fromEngine(lineInfo, engineError);
+    AnalysisError error = newAnalysisError_fromEngine(lineInfo, engineError);
     expect(error.toJson(), {
       SEVERITY: 'ERROR',
       TYPE: 'COMPILE_TIME_ERROR',
@@ -89,7 +89,7 @@ class AnalysisErrorTest {
 
   void test_fromEngine_noLineInfo() {
     when(engineError.correction).thenReturn(null);
-    AnalysisError error = new AnalysisError.fromEngine(null, engineError);
+    AnalysisError error = newAnalysisError_fromEngine(null, engineError);
     expect(error.toJson(), {
       SEVERITY: 'ERROR',
       TYPE: 'COMPILE_TIME_ERROR',