Revert of 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 58ae1d8752ddfab93a9809c4c96ef4bedcbd1a82..448c8c8d039573d1a70fcef3728002092d1dcf11 100644
--- a/chrome/browser/chromeos/chrome_browser_main_chromeos.cc
+++ b/chrome/browser/chromeos/chrome_browser_main_chromeos.cc
@@ -753,6 +753,8 @@
   SystemKeyEventListener::Shutdown();
 #endif
 
+  CrasAudioHandler::Shutdown();
+
   // Detach D-Bus clients before DBusThreadManager is shut down.
   power_button_observer_.reset();
   idle_action_warning_observer_.reset();
@@ -802,9 +804,6 @@
   // 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