Screen Locker fixes

chrome/browser/chromeos/login/screen_locker.h

Index: chrome/browser/chromeos/login/screen_locker.h
diff --git a/chrome/browser/chromeos/login/screen_locker.h b/chrome/browser/chromeos/login/screen_locker.h
index a0332cf4ba9da2076e91d1eeb0c82d4414b6d2aa..ace9dce7de3760ebe8225e49dffd2ae242a9d808 100644
--- a/chrome/browser/chromeos/login/screen_locker.h
+++ b/chrome/browser/chromeos/login/screen_locker.h
@@ -115,6 +115,9 @@ class ScreenLocker : public LoginStatusConsumer,
     return user_;
   }
 
+  // Returns a view that has given view |id|, or null if it doesn't exist.
+  views::View* GetViewByID(int id);
+
   // Initialize ScreenLocker class. It will listen to
   // LOGIN_USER_CHANGED notification so that the screen locker accepts
   // lock event only after a user is logged in.