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

chrome/browser/chromeos/login/helper.h

Index: chrome/browser/chromeos/login/helper.h
diff --git a/chrome/browser/chromeos/login/helper.h b/chrome/browser/chromeos/login/helper.h
index 0ecfe4f94618dca3df2baf629b3b32a794d9474f..791fbf98ddff61c440524c8100b8b6884906d10f 100644
--- a/chrome/browser/chromeos/login/helper.h
+++ b/chrome/browser/chromeos/login/helper.h
@@ -8,8 +8,9 @@
 #define CHROME_BROWSER_CHROMEOS_LOGIN_HELPER_H_
 #pragma once
 
-#include "views/controls/button/native_button.h"
 #include "third_party/skia/include/core/SkColor.h"
+#include "views/controls/button/native_button.h"
+#include "views/widget/widget_gtk.h"
 
 class GURL;
 
@@ -24,10 +25,44 @@ class MenuButton;
 class Painter;
 class Textfield;
 class Throbber;
+class Widget;
 }  // namespace views
 
 namespace chromeos {
 
+// This class manages showing the throbber in the separate popup widget.
+class ThrobberManager {
+ public:
+  ThrobberManager();
+  virtual ~ThrobberManager();
+
+  // Creates throbber above the given host in the right side with the given
+  // margin. Also places throbber in the middle of the vertical host size. It
+  // takes the ownership of the |throbber|. At most one throbber is shown at
+  // each moment, so calling this method will close the previously created
+  // throbber.
+  void CreateAndStart(views::Widget* host,
+                      views::Throbber* throbber,
+                      int right_margin);
+
+  // Creates throbber above the given host using the relative bounds given. It
+  // takes the ownership of the |throbber|. At most one throbber is shown at
+  // each moment, so calling this method will close the previously created
+  // throbber.
+  void CreateAndStart(views::Widget* host,
+                      views::Throbber* throbber,
+                      const gfx::Rect& relative_bounds);
+
+  // Stops and closes the throbber (if any).
+  void StopAndClose();
+
+ private:
+  // Holds the widget that shows the throbber.
+  views::Widget* throbber_widget_;
+
+  DISALLOW_COPY_AND_ASSIGN(ThrobberManager);
+};
+
 // Creates default smoothed throbber for time consuming operations on login.
 views::Throbber* CreateDefaultSmoothedThrobber();
 
@@ -81,6 +116,8 @@ const SkColor kTextColor = SK_ColorWHITE;
 // Default link color on login/OOBE controls.
 const SkColor kLinkColor = 0xFF0066CC;
 
+const int kThrobberRightMargin = 10;
+
 // Default size of the OOBE screen. Includes 10px shadow from each side.
 // See rounded_rect_painter.cc for border definitions.
 const int kWizardScreenWidth = 800;