chromeos: Notify window manager earlier about signout.

chrome/browser/browser_shutdown.cc

Index: chrome/browser/browser_shutdown.cc
diff --git a/chrome/browser/browser_shutdown.cc b/chrome/browser/browser_shutdown.cc
index 72c035023e05ecc72a3ef94977903363a20481c3..43088d5d5320f90e43f009689f33b6f230ea2cb4 100644
--- a/chrome/browser/browser_shutdown.cc
+++ b/chrome/browser/browser_shutdown.cc
@@ -48,7 +48,6 @@
 #include "chrome/browser/chromeos/boot_times_loader.h"
 #include "chrome/browser/chromeos/cros/cros_library.h"
 #include "chrome/browser/chromeos/cros/login_library.h"
-#include "chrome/browser/chromeos/wm_ipc.h"
 #endif
 
 using base::Time;
@@ -252,7 +251,6 @@ void Shutdown() {
   UnregisterURLRequestChromeJob();
 
 #if defined(OS_CHROMEOS)
-  chromeos::WmIpc::instance()->NotifyAboutSignout();
   if (chromeos::CrosLibrary::Get()->EnsureLoaded()) {
     chromeos::CrosLibrary::Get()->GetLoginLibrary()->StopSession("");
   }