Request bug report if fletch crashes

pkg/fletchc/lib/src/fletch_compiler_implementation.dart

Index: pkg/fletchc/lib/src/fletch_compiler_implementation.dart
diff --git a/pkg/fletchc/lib/src/fletch_compiler_implementation.dart b/pkg/fletchc/lib/src/fletch_compiler_implementation.dart
index 9f8591a4fe69a73c4e8e93e21791b3fc205922c4..f581b4fef9fc889b943399888788af7a1b8067f3 100644
--- a/pkg/fletchc/lib/src/fletch_compiler_implementation.dart
+++ b/pkg/fletchc/lib/src/fletch_compiler_implementation.dart
@@ -42,6 +42,10 @@ import 'package:compiler/src/util/util.dart' show
 import 'fletch_registry.dart' show
     FletchRegistry;
 
+import 'please_report_crash.dart' show
+    crashReportRequested,
+    requestBugReportOnCompilerCrashMessage;
+
 import 'fletch_function_builder.dart';
 import 'debug_info.dart';
 import 'find_position_visitor.dart';
@@ -275,6 +279,11 @@ class FletchCompilerImplementation extends apiimpl.Compiler {
     }
   }
 
+  void pleaseReportCrash() {
+    crashReportRequested = true;
+    print(requestBugReportOnCompilerCrashMessage);
+  }
+
   void reportError(
       Spannable node,
       MessageKind messageKind,