[kernel,front_end] Migrate first wave of pkg/kernel and pkg/front_end

Migrates libraries dependent only on already migrated libraries.

Change-Id: I0e85ee8dbc2afce031b92e0009e71c206a55af28
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/179502
Commit-Queue: Johnni Winther <johnniwinther@google.com>
Reviewed-by: Jens Johansen <jensj@google.com>

Author: johnniwinther

.dart_tool/package_config.json

@@ -1,6 +1,6 @@
 {
   "copyright": [
-    "Copyright (c) 2020, the Dart project authors. Please see the AUTHORS ",
+    "Copyright (c) 2021, the Dart project authors. Please see the AUTHORS ",
     "file 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."
   ],
@@ -11,7 +11,7 @@
     "constraint, update this by running tools/generate_package_config.dart."
   ],
   "configVersion": 2,
-  "generated": "2020-12-16T11:30:30.799202",
+  "generated": "2021-01-16T20:34:15.774260",
   "generator": "tools/generate_package_config.dart",
   "packages": [
     {
@@ -273,7 +273,7 @@
       "name": "front_end",
       "rootUri": "../pkg/front_end",
       "packageUri": "lib/",
-      "languageVersion": "2.6"
+      "languageVersion": "2.12"
     },
     {
       "name": "front_end_testcases",
@@ -367,7 +367,7 @@
       "name": "kernel",
       "rootUri": "../pkg/kernel",
       "packageUri": "lib/",
-      "languageVersion": "2.6"
+      "languageVersion": "2.12"
     },
     {
       "name": "language_versioning_2.7_test",

pkg/_fe_analyzer_shared/lib/src/messages/codes_generated.dart

@@ -1,4 +1,4 @@
-// Copyright (c) 2018, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2021, the Dart project authors.  Please see the AUTHORS file
 // 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.
 

pkg/front_end/benchmarks/ikg/dart2js.dart

@@ -2,6 +2,8 @@
 // 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.
 
+// @dart=2.9
+
 import 'package:compiler/src/dart2js.dart' as dart2js;
 
 main(args) => dart2js.main(args);

pkg/front_end/lib/src/api_prototype/compiler_options.dart

@@ -2,6 +2,8 @@
 // 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.
 
+// @dart = 2.9
+
 library front_end.compiler_options;
 
 import 'package:_fe_analyzer_shared/src/messages/diagnostic_message.dart'

pkg/front_end/lib/src/api_prototype/constant_evaluator.dart

@@ -2,6 +2,8 @@
 // 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.
 
+// @dart = 2.9
+
 library front_end.constant_evaluator;
 
 export '../fasta/kernel/constant_evaluator.dart'

pkg/front_end/lib/src/api_prototype/experimental_flags.dart

@@ -2,6 +2,8 @@
 // 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.
 
+// @dart = 2.9
+
 import 'package:kernel/kernel.dart' show Version;
 
 part 'experimental_flags_generated.dart';

pkg/front_end/lib/src/api_prototype/experimental_flags_generated.dart

@@ -1,7 +1,9 @@
-// Copyright (c) 2020, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2021, the Dart project authors.  Please see the AUTHORS file
 // 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.
 
+// @dart = 2.9
+
 // NOTE: THIS FILE IS GENERATED. DO NOT EDIT.
 //
 // Instead modify 'tools/experimental_features.yaml' and run

pkg/front_end/lib/src/api_prototype/front_end.dart

@@ -2,6 +2,8 @@
 // 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.
 
+// @dart = 2.9
+
 /// The Dart Front End contains logic to build summaries and kernel programs
 /// from Dart sources. The APIs exposed here are designed for tools in the Dart
 /// ecosystem that need to load sources and convert them to these formats.

pkg/front_end/lib/src/api_prototype/incremental_kernel_generator.dart

@@ -2,6 +2,8 @@
 // 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.
 
+// @dart = 2.9
+
 import 'package:_fe_analyzer_shared/src/scanner/string_scanner.dart'
     show StringScanner;
 

pkg/front_end/lib/src/api_prototype/kernel_generator.dart

@@ -2,6 +2,8 @@
 // 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.
 
+// @dart = 2.9
+
 /// Defines the front-end API for converting source code to Dart Kernel objects.
 library front_end.kernel_generator;