Replace using reprecated 'package:analyzer/src/generated/error.dart'.

pkg/analyzer_cli/lib/src/error_formatter.dart

Index: pkg/analyzer_cli/lib/src/error_formatter.dart
diff --git a/pkg/analyzer_cli/lib/src/error_formatter.dart b/pkg/analyzer_cli/lib/src/error_formatter.dart
index e0c9a8eef6fe67bf028470d0dfcdebcaeedac246..cac83b3b6011aecfa4284fcd539530e5247b97ac 100644
--- a/pkg/analyzer_cli/lib/src/error_formatter.dart
+++ b/pkg/analyzer_cli/lib/src/error_formatter.dart
@@ -4,8 +4,8 @@
 
 library analyzer_cli.src.error_formatter;
 
+import 'package:analyzer/error/error.dart';
 import 'package:analyzer/src/generated/engine.dart';
-import 'package:analyzer/src/generated/error.dart';
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer_cli/src/options.dart';
 
@@ -171,6 +171,7 @@ class ErrorFormatter {
     }
     out.writeln();
   }
+
   void formatErrors(List<AnalysisErrorInfo> errorInfos) {
     stats.unfilteredCount += errorInfos.length;