Flip the left/right speaker when the device is in yoga mode.

ash/system/chromeos/audio/tray_audio_delegate_chromeos.cc

Index: ash/system/chromeos/audio/tray_audio_delegate_chromeos.cc
diff --git a/ash/system/chromeos/audio/tray_audio_delegate_chromeos.cc b/ash/system/chromeos/audio/tray_audio_delegate_chromeos.cc
index 4f39865c0dee9196534beee138834dd3877439cd..fb1532fe37d177f9c42339ada7980d8f309fc7d2 100644
--- a/ash/system/chromeos/audio/tray_audio_delegate_chromeos.cc
+++ b/ash/system/chromeos/audio/tray_audio_delegate_chromeos.cc
@@ -60,5 +60,11 @@ void TrayAudioDelegateChromeOs::SetOutputVolumeLevel(int level) {
   CrasAudioHandler::Get()->SetOutputVolumePercent(level);
 }
 
+void TrayAudioDelegateChromeOs::SetInternalSpeakerChannelMode(
+    AudioChannelMode mode) {
+  CrasAudioHandler::Get()->SwapInternalSpeakerLeftRightChannel(
+      mode == LEFT_RIGHT_SWAPPED);
+}
+
 }  // namespace system
 }  // namespace ash