Deprecate all diagnostics methods that use strings.

pkg/front_end/lib/src/fasta/fasta.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;
 
 import 'dart:async' show Future;
 
 import 'dart:convert' show JSON;
 
 import 'dart:io' show BytesBuilder, File, exitCode;
 
 import 'package:front_end/physical_file_system.dart';
 import 'package:front_end/src/fasta/kernel/utils.dart';
 
 import 'package:kernel/kernel.dart' show Program, loadProgramFromBytes;
 
 import 'compiler_command_line.dart' show CompilerCommandLine;
 
 import 'compiler_context.dart' show CompilerContext;
 
-import 'errors.dart' show InputError, inputError;
+import 'deprecated_problems.dart'
+    show deprecated_InputError, deprecated_inputError;
 
 import 'kernel/kernel_target.dart' show KernelTarget;
 
 import 'dill/dill_target.dart' show DillTarget;
 
 import 'compile_platform.dart' show compilePlatformInternal;
 
 import 'ticker.dart' show Ticker;
 
 import 'translate_uri.dart' show TranslateUri;
@@ skipping 35 matching lines @@
   try {
     return await CompilerCommandLine.withGlobalOptions("outline", arguments,
         (CompilerContext c) async {
       if (c.options.verbose) {
         print("Building outlines for ${arguments.join(' ')}");
       }
       CompileTask task =
           new CompileTask(c, new Ticker(isVerbose: c.options.verbose));
       return await task.buildOutline(c.options.output);
     });
-  } on InputError catch (e) {
+  } on deprecated_InputError catch (e) {
     exitCode = 1;
-    print(e.format());
+    print(e.deprecated_format());
     return null;
   }
 }
 
 Future<Uri> compile(List<String> arguments) async {
   try {
     return await CompilerCommandLine.withGlobalOptions("compile", arguments,
         (CompilerContext c) async {
       if (c.options.verbose) {
         print("Compiling directly to Kernel: ${arguments.join(' ')}");
       }
       CompileTask task =
           new CompileTask(c, new Ticker(isVerbose: c.options.verbose));
       return await task.compile();
     });
-  } on InputError catch (e) {
+  } on deprecated_InputError catch (e) {
     exitCode = 1;
-    print(e.format());
+    print(e.deprecated_format());
     return null;
   }
 }
 
 class CompileTask {
   final CompilerContext c;
   final Ticker ticker;
 
   CompileTask(this.c, this.ticker);
 
@@ skipping 20 matching lines @@
     Uri platform = c.options.platform;
     if (platform != null) {
       _appendDillForUri(dillTarget, platform);
     }
     String argument = c.options.arguments.first;
     Uri uri = Uri.base.resolve(argument);
     String path = uriTranslator.translate(uri)?.path ?? argument;
     if (path.endsWith(".dart")) {
       kernelTarget.read(uri);
     } else {
-      inputError(uri, -1, "Unexpected input: $uri");
+      deprecated_inputError(uri, -1, "Unexpected input: $uri");
     }
     await dillTarget.buildOutlines();
     var outline = await kernelTarget.buildOutlines();
     if (c.options.dumpIr && output != null) {
       printProgramText(outline, libraryFilter: kernelTarget.isSourceLibrary);
     }
     if (output != null) {
       await writeProgramToFile(outline, output);
       ticker.logMs("Wrote outline to ${output.toFilePath()}");
     }
@@ skipping 83 matching lines @@
   final BytesBuilder builder = new BytesBuilder();
 
   void add(List<int> data) {
     builder.add(data);
   }
 
   void close() {
     // Nothing to do.
   }
 }