Show "About panel" bubble on Windows.

chrome/browser/ui/panels/panel.h

Index: chrome/browser/ui/panels/panel.h
===================================================================
--- chrome/browser/ui/panels/panel.h	(revision 85003)
+++ chrome/browser/ui/panels/panel.h	(working copy)
@@ -9,9 +9,11 @@
 #include "chrome/browser/ui/browser_window.h"
 
 #include "base/memory/scoped_ptr.h"
+#include "chrome/browser/ui/panels/panel_originator_delegate.h"
 #include "ui/gfx/rect.h"
 
 class PanelManager;
+class PanelOriginatorDelegate;
 
 // A platform independent implementation of BrowserWindow for Panels.  This
 // class would get the first crack at all the BrowserWindow calls for Panels and
@@ -128,11 +130,17 @@
 #if defined(OS_CHROMEOS)
   virtual void ShowKeyboardOverlay(gfx::NativeWindow owning_window) OVERRIDE;
 #endif
+  virtual Panel* GetAsPanel() OVERRIDE;
 
   // Construct a native panel BrowserWindow implementation for the specified
   // |browser|.
   static BrowserWindow* CreateNativePanel(Browser* browser, Panel* panel);
 
+  PanelOriginatorDelegate* originator() const { return originator_.get(); }
+  void set_originator(PanelOriginatorDelegate* originator) {
+    originator_.reset(originator);
+  }
+
 #ifdef UNIT_TEST
   BrowserWindow* browser_window() { return browser_window_.get(); }
 #endif
@@ -152,6 +160,8 @@
   //   not allowed for Panel.
   void SetPanelBounds(const gfx::Rect& bounds);
 
+  scoped_ptr<PanelOriginatorDelegate> originator_;
+
   // Platform specifc BrowserWindow implementation for panels.  It'd be one of
   // PanelBrowserWindowGtk/PanelBrowserView/PanelBrowserWindowCocoa.
   scoped_ptr<BrowserWindow> browser_window_;