Add custom default theme support and create a managed user default theme.

chrome/browser/themes/theme_service_aurax11.h

 // Copyright 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_THEMES_THEME_SERVICE_AURAX11_H_
 #define CHROME_BROWSER_THEMES_THEME_SERVICE_AURAX11_H_
 
-#include "base/prefs/pref_change_registrar.h"
 #include "chrome/browser/themes/theme_service.h"
 
-// A subclass of ThemeService that queries the current ui::LinuxUI instance for
-// theme data.
+// A subclass of ThemeService that manages the CustomThemeSupplier which
+// provides the native X11 theme.
 class ThemeServiceAuraX11 : public ThemeService {
  public:
   ThemeServiceAuraX11();
   virtual ~ThemeServiceAuraX11();
 
-  // Overridden from ui::ThemeProvider:
-  virtual SkColor GetColor(int id) const OVERRIDE;
-  virtual bool HasCustomImage(int id) const OVERRIDE;
-
   // Overridden from ThemeService:
-  virtual void Init(Profile* profile) OVERRIDE;
-  virtual gfx::Image GetImageNamed(int id) const OVERRIDE;
-  virtual void SetTheme(const extensions::Extension* extension) OVERRIDE;
-  virtual void UseDefaultTheme() OVERRIDE;
+  virtual bool ShouldInitWithNativeTheme() const OVERRIDE;
   virtual void SetNativeTheme() OVERRIDE;
   virtual bool UsingDefaultTheme() const OVERRIDE;
   virtual bool UsingNativeTheme() const OVERRIDE;
 
  private:
-  void OnUsesSystemThemeChanged();
-
-  // Whether we'll give the ui::LinuxUI object first shot at providing theme
-  // resources.
-  bool use_system_theme_;
-
-  PrefChangeRegistrar registrar_;
-
   DISALLOW_COPY_AND_ASSIGN(ThemeServiceAuraX11);
 };
 
 #endif  // CHROME_BROWSER_THEMES_THEME_SERVICE_AURAX11_H_