Some improvement of validation message bubble UI.

chrome/browser/ui/gtk/bubble/bubble_gtk.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_GTK_BUBBLE_BUBBLE_GTK_H_
 #define CHROME_BROWSER_UI_GTK_BUBBLE_BUBBLE_GTK_H_
 
 #include <gtk/gtk.h>
 
 #include <vector>
@@ skipping 74 matching lines @@
                          GtkWidget* content,
                          FrameStyle frame_style,
                          int attribute_flags,
                          GtkThemeService* provider,
                          BubbleDelegateGtk* delegate);
 
   // Close the bubble if it's open.  This will delete the widgets and object,
   // so you shouldn't hold a BubbleGtk pointer after calling Close().
   void Close();
 
+  // Move the window to the new anchor rectangle.
+  void SetPositionRelativeToAnchor(const gfx::Rect* rect);
+
   // content::NotificationObserver implementation.
   virtual void Observe(int type,
                        const content::NotificationSource& source,
                        const content::NotificationDetails& details) OVERRIDE;
 
   // Change an input-grabbing bubble into a non-input-grabbing bubble. This
   // allows a window to change from auto closing when it loses to focus to being
   // a window that does not auto close, and is useful if an auto closing window
   // starts being inspected.
   void StopGrabbingInput();
@@ skipping 132 matching lines @@
   bool closed_by_escape_;
 
   content::NotificationRegistrar registrar_;
 
   ui::GtkSignalRegistrar signals_;
 
   DISALLOW_COPY_AND_ASSIGN(BubbleGtk);
 };
 
 #endif  // CHROME_BROWSER_UI_GTK_BUBBLE_BUBBLE_GTK_H_