alternate ntp: fix website page jankiness when suggestions show and top bars are hidden

chrome/browser/ui/gtk/infobars/infobar_container_gtk.h

 // Copyright (c) 2011 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_INFOBARS_INFOBAR_CONTAINER_GTK_H_
 #define CHROME_BROWSER_UI_GTK_INFOBARS_INFOBAR_CONTAINER_GTK_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 20 matching lines @@
 // Due to how X11/GTK+ works, this class owns the methods to draw arrows on top
 // of other widgets. Since most bars in the top of the window have their own
 // event boxes, we can't just draw over the coordinates in the toplevel window
 // as event boxes get their own canvases (and they need to have their own event
 // boxes for a mixture of handling mouse events and themeing). And because they
 // have their own event boxes and event boxes can't be partially transparent,
 // we can't just overlap the widgets.
 class InfoBarContainerGtk : public InfoBarContainer {
  public:
   InfoBarContainerGtk(InfoBarContainer::Delegate* delegate,
                       chrome::search::SearchModel* search_model,

[dhollowa, 2013/01/25 21:24:08]

const chrome::search::SearchModel* search_model,

[kuan, 2013/01/29 00:17:08]

per discussion, this won't be a const.

+                      InstantModel* instant_model,

[dhollowa, 2013/01/25 21:24:08]

const InstantModel* instant_model,

[kuan, 2013/01/29 00:17:08]

per discussion, this shouldn't be a const, but for now, i've made it a const to
compile.  dhollowa@ would fix it in his follow-up cl.

                       Profile* profile);
   virtual ~InfoBarContainerGtk();
 
   // Get the native widget.
   GtkWidget* widget() const { return container_.get(); }
 
   // Remove the specified InfoBarDelegate from the selected WebContents. This
   // will notify us back and cause us to close the View. This is called from
   // the InfoBar's close button handler.
   void RemoveDelegate(InfoBarDelegate* delegate);
@@ skipping 34 matching lines @@
   // which InfoBarGtk supplies information about drawing the arrows.
   std::vector<InfoBarGtk*> infobars_gtk_;
 
   // VBox that holds the info bars.
   ui::OwnedWidgetGtk container_;
 
   DISALLOW_COPY_AND_ASSIGN(InfoBarContainerGtk);
 };
 
 #endif  // CHROME_BROWSER_UI_GTK_INFOBARS_INFOBAR_CONTAINER_GTK_H_