Fix speaker flipping issue when the device rotates.

ash/common/system/chromeos/audio/tray_audio_chromeos.cc

Index: ash/common/system/chromeos/audio/tray_audio_chromeos.cc
diff --git a/ash/common/system/chromeos/audio/tray_audio_chromeos.cc b/ash/common/system/chromeos/audio/tray_audio_chromeos.cc
index 7bae4ce79ed93c8eba93f6d39b36439133aed402..c54101122aa7d1a770d3e9117fda224427cce907 100644
--- a/ash/common/system/chromeos/audio/tray_audio_chromeos.cc
+++ b/ash/common/system/chromeos/audio/tray_audio_chromeos.cc
@@ -78,6 +78,8 @@ void TrayAudioChromeOs::OnDisplayRemoved(const display::Display& old_display) {
 
 void TrayAudioChromeOs::OnDisplayMetricsChanged(const display::Display& display,
                                                 uint32_t changed_metrics) {
+  TrayAudio::OnDisplayMetricsChanged(display, changed_metrics);
+
   // The event could be triggered multiple times during the HDMI display
   // transition, we don't need to restart HDMI re-discovering grace period
   // it is already started earlier.