Do not return profile unless it is loaded

chrome/browser/chromeos/chrome_browser_main_chromeos.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/chromeos/chrome_browser_main_chromeos.h"
 
 #include <string>
 #include <vector>
 
 #include "ash/shell.h"
@@ skipping 486 matching lines @@
     if (!user_manager->IsLoggedInAsGuest()) {
       g_browser_process->browser_policy_connector()->InitializeUserPolicy(
           username, user_manager->IsLoggedInAsPublicAccount(),
           false  /* wait_for_policy_fetch */);
     }
 
     // Load the default app order synchronously for restarting case.
     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();
   }
 
   if (!app_order_loader_) {
     app_order_loader_.reset(
         new default_app_order::ExternalLoader(true /* async */));
   }
 
   // Initialize magnification manager before ash tray is created. And this must
   // be placed after UserManager::SessionStarted();
@@ skipping 242 matching lines @@
     } else if (trial->group() == margin_200mb) {
       LOG(WARNING) << "low_mem: Part of '200MB' experiment";
       LowMemoryObserver::SetLowMemoryMargin(200);
     } else {
       LOG(WARNING) << "low_mem: Part of 'default' experiment";
     }
   }
 }
 
 }  //  namespace chromeos