Deprecate all diagnostics methods that use strings.

pkg/front_end/lib/src/fasta/kernel/kernel_builder.dart

 // Copyright (c) 2016, 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.
 
 library fasta.kernel_builder;
 
 export 'kernel_class_builder.dart' show KernelClassBuilder;
 
 export 'kernel_enum_builder.dart' show KernelEnumBuilder;
 
@@ skipping 38 matching lines @@
         DartType,
         DynamicType,
         Field,
         Initializer,
         Library,
         Member,
         Procedure,
         RedirectingInitializer,
         TypeParameter;
 
-import '../errors.dart' show inputError;
+import '../deprecated_problems.dart' show deprecated_inputError;
 
 import '../builder/builder.dart' show LibraryBuilder;
 
 List<DartType> computeDefaultTypeArguments(LibraryBuilder library,
     List<TypeParameter> typeParameters, List<DartType> arguments) {
   // TODO(ahe): Not sure what to do if `arguments.length !=
   // cls.typeParameters.length`.
   if (arguments == null) {
     return new List<DartType>.filled(
         typeParameters.length, const DynamicType());
   }
   if (arguments.length < typeParameters.length) {
     arguments = new List<DartType>.from(arguments);
     for (int i = arguments.length; i < typeParameters.length; i++) {
       arguments.add(const DynamicType());
     }
   } else if (arguments.length > typeParameters.length) {
     return arguments.sublist(0, typeParameters.length);
   }
   return arguments;
 }
 
-dynamic memberError(Member member, Object error, [int charOffset]) {
+dynamic deprecated_memberError(Member member, Object error, [int charOffset]) {
   String name = member.name?.name;
   if (name == "") {
     name = Printer.emptyNameString;
   } else if (name == null) {
     name = "<anon>";
   }
   Library library = member.enclosingLibrary;
   Class cls = member.enclosingClass;
   String fileUri;
   if (member is Procedure) {
     fileUri = member.fileUri;
   } else if (member is Field) {
     fileUri = member.fileUri;
   }
   fileUri ??= cls?.fileUri ?? library.fileUri;
   Uri uri = fileUri == null ? library.importUri : Uri.base.resolve(fileUri);
   charOffset ??= -1;
   if (charOffset == -1) {
     charOffset = member.fileOffset ?? -1;
   }
   if (charOffset == -1) {
     charOffset = cls?.fileOffset ?? -1;
   }
   name = (cls == null ? "" : "${cls.name}::") + name;
-  return inputError(uri, charOffset, "Error in $name: $error");
+  return deprecated_inputError(uri, charOffset, "Error in $name: $error");
 }
 
 int compareProcedures(Procedure a, Procedure b) {
   int i = a.fileUri.compareTo(b.fileUri);
   if (i != 0) return i;
   return a.fileOffset.compareTo(b.fileOffset);
 }
 
 bool isRedirectingGenerativeConstructorImplementation(Constructor constructor) {
   List<Initializer> initializers = constructor.initializers;
   return initializers.length == 1 &&
       initializers.single is RedirectingInitializer;
 }