Always load signin profile on Chrome OS startup.

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 f4d2074d6ec23f9dbf02621a9b7bc9bbc0198603..397157ce79569dd4418e21caacdaa1951f430f9e 100644
--- a/chrome/browser/chromeos/chrome_browser_main_chromeos.cc
+++ b/chrome/browser/chromeos/chrome_browser_main_chromeos.cc
@@ -609,6 +609,12 @@ void ChromeBrowserMainPartsChromeos::PostProfileInit() {
   // -- This used to be in ChromeBrowserMainParts::PreMainMessageLoopRun()
   // -- just after CreateProfile().
 
+  // Force loading of signin profile if it was not loaded before. It is possible
+  // when we are restoring session or skipping login screen for some other
+  // reason.
+  if (!chromeos::ProfileHelper::IsSigninProfile(profile()))
+    chromeos::ProfileHelper::GetSigninProfile();
+
   // Restarting Chrome inside existing user session. Possible cases:
   // 1. Chrome is restarted after crash.
   // 2. Chrome is started in browser_tests skipping the login flow