Update Windows UI on system color changes.

chrome/browser/ui/libgtk2ui/gtk2_ui.h

 // Copyright (c) 2013 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_LIBGTK2UI_GTK2_UI_H_
 #define CHROME_BROWSER_UI_LIBGTK2UI_GTK2_UI_H_
 
 #include <map>
 #include <vector>
 
@@ skipping 89 matching lines @@
       const base::string16& tool_tip) const OVERRIDE;
   virtual gfx::Image GetIconForContentType(
       const std::string& content_type, int size) const OVERRIDE;
   virtual scoped_ptr<views::Border> CreateNativeBorder(
       views::LabelButton* owning_button,
       scoped_ptr<views::Border> border) OVERRIDE;
   virtual void AddWindowButtonOrderObserver(
       views::WindowButtonOrderObserver* observer) OVERRIDE;
   virtual void RemoveWindowButtonOrderObserver(
       views::WindowButtonOrderObserver* observer) OVERRIDE;
-  virtual void AddNativeThemeChangeObserver(
-      views::NativeThemeChangeObserver* observer) OVERRIDE;
-  virtual void RemoveNativeThemeChangeObserver(
-      views::NativeThemeChangeObserver* observer) OVERRIDE;
   virtual bool UnityIsRunning() OVERRIDE;
   virtual NonClientMiddleClickAction GetNonClientMiddleClickAction() OVERRIDE;
   virtual void NotifyWindowManagerStartupComplete() OVERRIDE;
 
   // ui::TextEditKeybindingDelegate:
   virtual bool MatchEvent(
       const ui::Event& event,
       std::vector<ui::TextEditCommandAuraLinux>* commands) OVERRIDE;
 
  private:
@@ skipping 115 matching lines @@
   // If either of these vectors are non-empty, they represent the current
   // window button configuration.
   std::vector<views::FrameButton> leading_buttons_;
   std::vector<views::FrameButton> trailing_buttons_;
 
   scoped_ptr<Gtk2KeyBindingsHandler> key_bindings_handler_;
 
   // Objects to notify when the window frame button order changes.
   ObserverList<views::WindowButtonOrderObserver> observer_list_;
 
-  // Observers to notify when the theme state changes.
-  ObserverList<views::NativeThemeChangeObserver> theme_change_observers_;
-
   // Whether we should lower the window on a middle click to the non client
   // area.
   NonClientMiddleClickAction middle_click_action_;
 
   // Image cache of lazily created images.
   mutable ImageCache gtk_images_;
 
   DISALLOW_COPY_AND_ASSIGN(Gtk2UI);
 };
 
 }  // namespace libgtk2ui
 
 // Access point to the GTK2 desktop system. This should be the only symbol that
 // is exported in the library; everything else should be used through the
 // interface, because eventually this .so will be loaded through dlopen at
 // runtime so our main binary can conditionally load GTK2 or GTK3 or EFL or
 // QT or whatever.
 LIBGTK2UI_EXPORT views::LinuxUI* BuildGtk2UI();
 
 #endif  // CHROME_BROWSER_UI_LIBGTK2UI_GTK2_UI_H_