Updates the mic icon status based on the device's audio state.

chrome/browser/chromeos/chrome_browser_main_chromeos.cc

Index: chrome/browser/chromeos/chrome_browser_main_chromeos.cc
diff --git a/chrome/browser/chromeos/chrome_browser_main_chromeos.cc b/chrome/browser/chromeos/chrome_browser_main_chromeos.cc
index 448c8c8d039573d1a70fcef3728002092d1dcf11..58ae1d8752ddfab93a9809c4c96ef4bedcbd1a82 100644
--- a/chrome/browser/chromeos/chrome_browser_main_chromeos.cc
+++ b/chrome/browser/chromeos/chrome_browser_main_chromeos.cc
@@ -753,8 +753,6 @@ void ChromeBrowserMainPartsChromeos::PostMainMessageLoopRun() {
   SystemKeyEventListener::Shutdown();
 #endif
 
-  CrasAudioHandler::Shutdown();
-
   // Detach D-Bus clients before DBusThreadManager is shut down.
   power_button_observer_.reset();
   idle_action_warning_observer_.reset();
@@ -804,6 +802,9 @@ void ChromeBrowserMainPartsChromeos::PostMainMessageLoopRun() {
   // Stops all in-flight OAuth2 token fetchers before the IO thread stops.
   DeviceOAuth2TokenServiceFactory::Shutdown();
 
+  // Shutdown after PostMainMessageLoopRun() which should destroy all observers.
+  CrasAudioHandler::Shutdown();
+
   // Called after
   // ChromeBrowserMainPartsLinux::PostMainMessageLoopRun() to be
   // executed after execution of chrome::CloseAsh(), because some