Version 2.13.0-51.0.dev

Merge commit '8467186ca0aa1d2b716ed00cb9bc55f74d9ddda9' into 'dev'

Author: Dart CI

pkg/compiler/lib/src/ir/constants.dart

@@ -203,11 +203,21 @@ class ConstantReference extends ir.TreeNode {
     throw new UnsupportedError("ConstantReference.accept");
   }
 
+  @override
+  R accept1<R, A>(ir.TreeVisitor1<R, A> v, A arg) {
+    throw new UnsupportedError("ConstantReference.accept");
+  }
+
   @override
   transformChildren(ir.Transformer v) {
     throw new UnsupportedError("ConstantReference.transformChildren");
   }
 
+  @override
+  transformOrRemoveChildren(ir.RemovingTransformer v) {
+    throw new UnsupportedError("ConstantReference.transformOrRemoveChildren");
+  }
+
   @override
   int get hashCode => 13 * constant.hashCode;
 

pkg/dev_compiler/lib/src/kernel/command.dart

@@ -15,7 +15,8 @@ import 'package:front_end/src/api_unstable/ddc.dart' as fe;
 import 'package:kernel/binary/ast_to_binary.dart' as kernel show BinaryPrinter;
 import 'package:kernel/class_hierarchy.dart';
 import 'package:kernel/core_types.dart';
-import 'package:kernel/kernel.dart' hide MapEntry;
+import 'package:kernel/kernel.dart';
+import 'package:kernel/ast.dart' show NonNullableByDefaultCompiledMode;
 import 'package:kernel/target/targets.dart';
 import 'package:kernel/text/ast_to_text.dart' as kernel show Printer;
 import 'package:path/path.dart' as p;

pkg/dev_compiler/lib/src/kernel/target.dart

@@ -5,7 +5,6 @@
 // @dart = 2.9
 
 import 'dart:collection';
-import 'dart:core' hide MapEntry;
 
 import 'package:_fe_analyzer_shared/src/messages/codes.dart'
     show Message, LocatedMessage;

pkg/front_end/lib/src/fasta/builder/constructor_builder.dart

@@ -4,8 +4,6 @@
 
 // @dart = 2.9
 
-import 'dart:core' hide MapEntry;
-
 import 'package:_fe_analyzer_shared/src/scanner/token.dart' show Token;
 
 import 'package:kernel/ast.dart';

pkg/front_end/lib/src/fasta/builder/declaration_builder.dart

@@ -4,8 +4,6 @@
 
 // @dart = 2.9
 
-import 'dart:core' hide MapEntry;
-
 import 'package:kernel/ast.dart';
 
 import '../messages.dart';

pkg/front_end/lib/src/fasta/builder/extension_builder.dart

@@ -4,8 +4,6 @@
 
 // @dart = 2.9
 
-import 'dart:core' hide MapEntry;
-
 import 'package:kernel/ast.dart';
 import 'package:kernel/core_types.dart';
 

pkg/front_end/lib/src/fasta/builder/field_builder.dart

@@ -8,7 +8,7 @@ library fasta.field_builder;
 
 import 'package:_fe_analyzer_shared/src/scanner/scanner.dart' show Token;
 
-import 'package:kernel/ast.dart' hide MapEntry;
+import 'package:kernel/ast.dart';
 import 'package:kernel/core_types.dart';
 import 'package:kernel/src/legacy_erasure.dart';
 

pkg/front_end/lib/src/fasta/builder/fixed_type_builder.dart

@@ -4,7 +4,7 @@
 
 // @dart = 2.9
 
-import 'package:kernel/ast.dart' hide MapEntry;
+import 'package:kernel/ast.dart';
 
 import '../problems.dart';
 import 'library_builder.dart';

pkg/front_end/lib/src/fasta/builder/function_builder.dart

@@ -6,8 +6,6 @@
 
 library fasta.procedure_builder;
 
-import 'dart:core' hide MapEntry;
-
 import 'package:front_end/src/fasta/kernel/kernel_api.dart';
 import 'package:kernel/ast.dart';
 

pkg/front_end/lib/src/fasta/builder/member_builder.dart

@@ -6,8 +6,6 @@
 
 library fasta.member_builder;
 
-import 'dart:core' hide MapEntry;
-
 import 'package:kernel/ast.dart';
 import 'package:kernel/core_types.dart';