GTK Themes: Make the omnibox area look more native.

chrome/browser/gtk/toolbar_star_toggle_gtk.h

 // Copyright (c) 2009 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_GTK_TOOLBAR_STAR_TOGGLE_GTK_H_
 #define CHROME_BROWSER_GTK_TOOLBAR_STAR_TOGGLE_GTK_H_
 
 #include <gtk/gtk.h>
 
 #include "base/basictypes.h"
 #include "chrome/browser/gtk/custom_button.h"
+#include "chrome/common/notification_observer.h"
+#include "chrome/common/notification_registrar.h"
 #include "chrome/common/owned_widget_gtk.h"
 
 class BrowserToolbarGtk;
+class GtkThemeProvider;
 class GURL;
 
 // Displays the bookmark star button, which toggles between two images.
-class ToolbarStarToggleGtk {
+class ToolbarStarToggleGtk : public NotificationObserver {
  public:
-  ToolbarStarToggleGtk(BrowserToolbarGtk* host);
+  explicit ToolbarStarToggleGtk(BrowserToolbarGtk* host);
   ~ToolbarStarToggleGtk();
 
+  // Provide NotificationObserver implementation.
+  virtual void Observe(NotificationType type,
+                       const NotificationSource& source,
+                       const NotificationDetails& details);
+
   // If the bubble isn't showing, shows it above the star button.
   void ShowStarBubble(const GURL& url, bool newly_bookmarked);
 
   void SetStarred(bool starred);
 
   GtkWidget* widget() const { return widget_.get(); }
 
  private:
+  // Updates the properties of |widget_| when we would need to change its
+  // state.
+  void UpdateGTKButton();
+
   // Callback for expose, used to draw the custom graphics.
   static gboolean OnExpose(GtkWidget* widget, GdkEventExpose* e,
                            ToolbarStarToggleGtk* obj);
 
+  // Used to listen for theme change notifications.
+  NotificationRegistrar registrar_;
+
   // The browser toolbar hosting this widget, for getting the current profile.
   BrowserToolbarGtk* host_;
 
   // The actual button widget.
   OwnedWidgetGtk widget_;
 
   // Whether we show the yellow star.
   bool is_starred_;
 
+  GtkThemeProvider* theme_provider_;
+
   CustomDrawButtonBase unstarred_;
   CustomDrawButtonBase starred_;
 
   DISALLOW_EVIL_CONSTRUCTORS(ToolbarStarToggleGtk);
 };
 
 #endif  // CHROME_BROWSER_GTK_TOOLBAR_STAR_TOGGLE_GTK_H_