Place the spinner in the right corner of the controls window.

chrome/browser/chromeos/login/screen_lock_view.h

Index: chrome/browser/chromeos/login/screen_lock_view.h
diff --git a/chrome/browser/chromeos/login/screen_lock_view.h b/chrome/browser/chromeos/login/screen_lock_view.h
index 9ceefd11f45dff72b764e4aac7bdc480595ef200..91b3fb835d720e1fdcf0aadbe9a7747efdbbc08c 100644
--- a/chrome/browser/chromeos/login/screen_lock_view.h
+++ b/chrome/browser/chromeos/login/screen_lock_view.h
@@ -19,6 +19,7 @@ class ImageView;
 namespace chromeos {
 
 class ScreenLocker;
+class ThrobberManager;
 class UserView;
 
 namespace test {
@@ -33,7 +34,7 @@ class ScreenLockView : public views::View,
                        public UserView::Delegate {
  public:
   explicit ScreenLockView(ScreenLocker* screen_locker);
-  virtual ~ScreenLockView() {}
+  virtual ~ScreenLockView();
 
   void Init();
 
@@ -46,6 +47,10 @@ class ScreenLockView : public views::View,
   // Returns the bounds of the password field in ScreenLocker's coordinate.
   gfx::Rect GetPasswordBoundsRelativeTo(const views::View* view);
 
+  // Starts/Stops throbber.
+  void StartThrobber();
+  void StopThrobber();
+
   // views::View implementation:
   virtual void SetEnabled(bool enabled);
   virtual void Layout();
@@ -90,6 +95,8 @@ class ScreenLockView : public views::View,
   // Username that overlays on top of user's picture.
   views::View* username_;
 
+  scoped_ptr<ThrobberManager> throbber_manager_;
+
   DISALLOW_COPY_AND_ASSIGN(ScreenLockView);
 };