retrievad from google cache of
http://archrepo.jeago.com/sources/chromium-dev/pulse_audio_fix.patch

--- chromium-build/media/audio/pulse/pulse_output.cc.orig	2012-10-26 09:44:38.509209905 -0700
+++ chromium-build/media/audio/pulse/pulse_output.cc	2012-10-26 09:45:32.178819603 -0700
@@ -86,7 +86,7 @@
 
   // All channel maps have the same size array of channel positions.
   for (unsigned int channel = 0; channel != CHANNELS_MAX; ++channel) {
-    int channel_position = kChannelOrderings[channel_layout][channel];
+    int channel_position = ChannelOrder(channel_layout, static_cast<Channels>(channel));
     if (channel_position > -1) {
       channel_map.map[channel_position] = ChromiumToPAChannelPosition(
           static_cast<Channels>(channel));