Use FastaMessage instead of String. Part 1.

pkg/front_end/lib/src/fasta/kernel/kernel_class_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_class_builder;
 
 import 'package:front_end/src/fasta/kernel/kernel_shadow_ast.dart'
     show KernelMember;
 
 import 'package:kernel/ast.dart'
@@ skipping 11 matching lines @@
         Procedure,
         ProcedureKind,
         StaticGet,
         Supertype,
         VariableDeclaration;
 
 import 'package:kernel/class_hierarchy.dart' show ClassHierarchy;
 
 import '../deprecated_problems.dart' show deprecated_internalProblem;
 
+import '../fasta_codes.dart' show codeRedirectionTargetNotFound;
+
 import '../dill/dill_member_builder.dart' show DillMemberBuilder;
 
 import 'kernel_builder.dart'
     show
         Builder,
         ClassBuilder,
         ConstructorReferenceBuilder,
         KernelLibraryBuilder,
         KernelProcedureBuilder,
         KernelTypeBuilder,
@@ skipping 82 matching lines @@
           if (redirectionTarget != null) {
             assert(builder.actualBody == null);
             Builder targetBuilder = redirectionTarget.target;
             addRedirectingConstructor(builder, library);
             if (targetBuilder is ProcedureBuilder) {
               Member target = targetBuilder.target;
               builder.body = new RedirectingFactoryBody(target);
             } else if (targetBuilder is DillMemberBuilder) {
               builder.body = new RedirectingFactoryBody(targetBuilder.member);
             } else {
-              String message = "Redirection constructor target not found: "
-                  "${redirectionTarget.fullNameForErrors}";
+              var message = codeRedirectionTargetNotFound
+                  .bind(redirectionTarget.fullNameForErrors);
               if (builder.isConst) {
-                deprecated_addCompileTimeError(builder.charOffset, message);
+                addCompileTimeError(message, builder.charOffset);
               } else {
-                deprecated_addWarning(builder.charOffset, message);
+                addWarning(message, builder.charOffset);
               }
               // CoreTypes aren't computed yet, and this is the outline
               // phase. So we can't and shouldn't create a method body.
               builder.body = new RedirectingFactoryBody.unresolved(
                   redirectionTarget.fullNameForErrors);
             }
           }
         }
       }
     }
@@ skipping 143 matching lines @@
       }
     }
   }
 
   String get fullNameForErrors {
     return isMixinApplication
         ? "${supertype.fullNameForErrors} with ${mixedInType.fullNameForErrors}"
         : name;
   }
 }