generate_stubs: Allow // comments as well as the existing #.

media/audio/pulse/pulse.sigs

Index: media/audio/pulse/pulse.sigs
diff --git a/media/audio/pulse/pulse.sigs b/media/audio/pulse/pulse.sigs
index b5d927c754cd0893c235cde9bb156689a1d996e7..8d2dab70c605c8732293fbaf7286a6a995ce74f1 100644
--- a/media/audio/pulse/pulse.sigs
+++ b/media/audio/pulse/pulse.sigs
@@ -1,10 +1,10 @@
-# Copyright 2013 The Chromium Authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
+// Copyright 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
 
-#------------------------------------------------
-# Functions from pulse used in media code.
-#------------------------------------------------
+//------------------------------------------------
+// Functions from pulse used in media code.
+//------------------------------------------------
 pa_mainloop_api* pa_threaded_mainloop_get_api(pa_threaded_mainloop* m);
 void pa_threaded_mainloop_free(pa_threaded_mainloop* m);
 pa_threaded_mainloop* pa_threaded_mainloop_new();