Do not return profile unless it is loaded

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 5b947a9e19b4326db91819aa26438e4bca14b706..9236d3d0dc9663ec63fefcf7edf6e7d21a93a257 100644
--- a/chrome/browser/chromeos/chrome_browser_main_chromeos.cc
+++ b/chrome/browser/chromeos/chrome_browser_main_chromeos.cc
@@ -504,6 +504,12 @@ void ChromeBrowserMainPartsChromeos::PreProfileInit() {
     app_order_loader_.reset(
         new default_app_order::ExternalLoader(false /* async */));
 
+  // TODO(antrim): SessionStarted notification should be moved to
+  // PostProfileInit at some point, as NOTIFICATION_SESSION_STARTED should
+  // go after NOTIFICATION_LOGIN_USER_PROFILE_PREPARED, which requires
+  // loaded profile (and, thus, should be fired in PostProfileInit, as
+  // synchronous profile loading does not emit it).
+
     user_manager->SessionStarted();
   }