chromeos: Fix a crash when trying to open settings page when there is no browser window.

chrome/browser/chromeos/system/ash_system_tray_delegate.cc

Index: chrome/browser/chromeos/system/ash_system_tray_delegate.cc
diff --git a/chrome/browser/chromeos/system/ash_system_tray_delegate.cc b/chrome/browser/chromeos/system/ash_system_tray_delegate.cc
index cd6f7389f7cff58dd9294b0e7de4acf9db28a53a..093993ee37f2fe0560a93e8a3123c0c845f92537 100644
--- a/chrome/browser/chromeos/system/ash_system_tray_delegate.cc
+++ b/chrome/browser/chromeos/system/ash_system_tray_delegate.cc
@@ -418,8 +418,10 @@ class SystemTrayDelegate : public ash::SystemTrayDelegate,
   // browser window with an empty tab and returns it.
   Browser* GetAppropriateBrowser() {
     Browser* browser = BrowserList::GetLastActive();
-    if (!browser)
-      browser = Browser::NewEmptyWindow(ProfileManager::GetDefaultProfile());
+    if (!browser) {
+      browser = Browser::OpenEmptyWindow(
+          ProfileManager::GetDefaultProfileOrOffTheRecord());
+    }
     return browser;
   }