Add --set-exit-code-on-problem option.

pkg/front_end/lib/src/kernel_generator_impl.dart

 // Copyright (c) 2017, 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.
 
 /// Defines the front-end API for converting source code to Dart Kernel objects.
 library front_end.kernel_generator_impl;
 
 import 'dart:async' show Future;
 import 'dart:async';
 
 import 'package:kernel/kernel.dart' show Program, CanonicalName;
 
 import 'base/processed_options.dart';
+import 'fasta/compiler_command_line.dart' show CompilerCommandLine;
+import 'fasta/compiler_context.dart' show CompilerContext;
+import 'fasta/deprecated_problems.dart' show deprecated_InputError, reportCrash;
 import 'fasta/dill/dill_target.dart' show DillTarget;
-import 'fasta/deprecated_problems.dart' show deprecated_InputError, reportCrash;
 import 'fasta/kernel/kernel_outline_shaker.dart';
 import 'fasta/kernel/kernel_target.dart' show KernelTarget;
+import 'fasta/kernel/utils.dart';
 import 'fasta/kernel/verifier.dart';
-import 'fasta/kernel/utils.dart';
-import 'fasta/compiler_command_line.dart';
 import 'fasta/translate_uri.dart' show TranslateUri;
 
 /// Implementation for the `package:front_end/kernel_generator.dart` and
 /// `package:front_end/summary_generator.dart` APIs.
 Future<CompilerResult> generateKernel(ProcessedOptions options,
     {bool buildSummary: false,
     bool buildProgram: true,
     bool trimDependencies: false}) async {
   // TODO(sigmund): Replace CompilerCommandLine and instead simply use a
-  // CompilerContext that directly uses the ProcessedOptions throught the
+  // CompilerContext that directly uses the ProcessedOptions through the
   // system.
   String programName = "";
   List<String> arguments = <String>[programName, "--target=none"];
   if (options.strongMode) {
     arguments.add("--strong-mode");
   }
   if (options.verbose) {
     arguments.add("--verbose");
   }
+  if (options.setExitCodeOnProblem) {
+    arguments.add("--set-exit-code-on-problem");
+  }
   return await CompilerCommandLine.withGlobalOptions(programName, arguments,
       (CompilerContext context) async {
     context.options.options["--target"] = options.target;
     return await generateKernelInternal(options,
         buildSummary: buildSummary,
         buildProgram: buildProgram,
         trimDependencies: trimDependencies);
   });
 }
 
@@ skipping 118 matching lines @@
   final Program program;
 
   /// Dependencies traversed by the compiler. Used only for generating
   /// dependency .GN files in the dart-sdk build system.
   /// Note this might be removed when we switch to compute depencencies without
   /// using the compiler itself.
   final List<Uri> deps;
 
   CompilerResult({this.summary, this.program, this.deps});
 }