Correctly pass options to CompilerCommandLine.withGlobalOptions.

pkg/front_end/lib/src/kernel_generator_impl.dart

Index: pkg/front_end/lib/src/kernel_generator_impl.dart
diff --git a/pkg/front_end/lib/src/kernel_generator_impl.dart b/pkg/front_end/lib/src/kernel_generator_impl.dart
index fca3fb1e35b08c639ed839a0d517d914ee55bb88..3f3960695a5df626a35e86c7ba52a3c4b83c96f7 100644
--- a/pkg/front_end/lib/src/kernel_generator_impl.dart
+++ b/pkg/front_end/lib/src/kernel_generator_impl.dart
@@ -29,11 +29,17 @@ Future<CompilerResult> generateKernel(ProcessedOptions options,
   // TODO(sigmund): Replace CompilerCommandLine and instead simply use a
   // CompilerContext that directly uses the ProcessedOptions throught the
   // system.
-  return await CompilerCommandLine.withGlobalOptions("", [""], (context) async {
-    context.options.options['--target'] = options.target;
-    context.options.options['--strong-mode'] = options.strongMode;
-    context.options.options['--verbose'] = options.verbose;
-
+  String programName = "";
+  List<String> arguments = <String>[programName, "--target=none"];
+  if (options.strongMode) {
+    arguments.add("--strong-mode");
+  }
+  if (options.verbose) {
+    arguments.add("--verbose");
+  }
+  return await CompilerCommandLine.withGlobalOptions(programName, arguments,
+      (CompilerContext context) async {
+    context.options.options["--target"] = options.target;
     return await generateKernelInternal(options,
         buildSummary: buildSummary,
         buildProgram: buildProgram,