Move front_end/lib/src/base/errors.dart into _fe_analyzer_shared package.

Change-Id: I9369e8dbf7b5d6fff9ad2a74346871b3e274e8ee
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/123640
Commit-Queue: Paul Berry <paulberry@google.com>
Reviewed-by: Jens Johansen <jensj@google.com>

Author: stereotype441

pkg/front_end/lib/src/base/errors.dart renamed to pkg/_fe_analyzer_shared/lib/src/base/errors.dart

@@ -4,6 +4,7 @@
 
 import 'dart:collection';
 
+import 'package:_fe_analyzer_shared/src/base/errors.dart';
 import 'package:analyzer/diagnostic/diagnostic.dart';
 import 'package:analyzer/error/listener.dart';
 import 'package:analyzer/src/dart/error/ffi_code.dart';
@@ -15,10 +16,9 @@ import 'package:analyzer/src/generated/parser.dart' show ParserErrorCode;
 import 'package:analyzer/src/generated/resolver.dart' show ResolverErrorCode;
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer/src/manifest/manifest_warning_code.dart';
-import 'package:front_end/src/base/errors.dart';
 import 'package:front_end/src/scanner/errors.dart';
 
-export 'package:front_end/src/base/errors.dart'
+export 'package:_fe_analyzer_shared/src/base/errors.dart'
     show ErrorCode, ErrorSeverity, ErrorType;
 
 const List<ErrorCode> errorCodeValues = const [

pkg/analyzer/lib/error/error.dart

@@ -4,6 +4,7 @@
 
 import 'dart:async';
 
+import 'package:_fe_analyzer_shared/src/base/errors.dart';
 import 'package:analyzer/dart/analysis/features.dart';
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/element/element.dart';
@@ -15,7 +16,6 @@ import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/source_io.dart';
 import 'package:analyzer/src/task/strong/ast_properties.dart';
 import 'package:analyzer/src/test_utilities/find_node.dart';
-import 'package:front_end/src/base/errors.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 

pkg/analyzer/test/generated/strong_mode_test.dart

@@ -9,7 +9,7 @@
   -- you also update these references to it:
   --  * pkg/compiler/lib/src/diagnostics/messages.dart
   --  * pkg/dart_messages/lib/shared_messages.dart
-  --  * pkg/front_end/lib/src/base/errors.dart
+  --  * pkg/_fe_analyzer_shared/lib/src/base/errors.dart
   --  * https://github.com/dart-lang/linter/
   -->
 

pkg/front_end/lib/src/fasta/diagnostics.md

@@ -2,7 +2,7 @@
 // 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.
 
-import '../base/errors.dart';
+import 'package:_fe_analyzer_shared/src/base/errors.dart';
 import '../fasta/fasta_codes.dart';
 import '../fasta/scanner/error_token.dart';
 import 'token.dart' show Token, TokenType;

pkg/front_end/lib/src/scanner/errors.dart

@@ -2,7 +2,7 @@
 // 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.
 
-import 'package:front_end/src/base/errors.dart';
+import 'package:_fe_analyzer_shared/src/base/errors.dart';
 import 'package:front_end/src/fasta/scanner/abstract_scanner.dart'
     show AbstractScanner, ScannerConfiguration;
 import 'package:front_end/src/scanner/errors.dart';