Check if theme is ready.

chrome/browser/ui/gtk/gtk_theme_service.h

 // Copyright (c) 2012 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_GTK_THEME_SERVICE_H_
 #define CHROME_BROWSER_UI_GTK_GTK_THEME_SERVICE_H_
 
 #include <map>
 #include <vector>
 
@@ skipping 141 matching lines @@
 
   // Whether we use the GTK theme by default in the current desktop
   // environment. Returns true when we GTK defaults to on.
   static bool DefaultUsesSystemTheme();
 
  private:
   typedef std::map<int, SkColor> ColorMap;
   typedef std::map<int, color_utils::HSL> TintMap;
   typedef std::map<int, gfx::Image*> ImageCache;
 
-  // Clears all the GTK color overrides.
-  virtual void ClearAllThemeData() OVERRIDE;
-
   // Load theme data from preferences, possibly picking colors from GTK.
   virtual void LoadThemePrefs() OVERRIDE;
 
   // Let all the browser views know that themes have changed.
   virtual void NotifyThemeChanged() OVERRIDE;
 
   // Additionally frees the CairoCachedSurfaces.
   virtual void FreePlatformCaches() OVERRIDE;
 
   // Gets the name of the current icon theme and passes it to our low level XDG
@@ skipping 135 matching lines @@
 
   // The default folder icon and default bookmark icon for the GTK theme.
   // These are static because the system can only have one theme at a time.
   // They are cached when they are requested the first time, and cleared when
   // the system theme changes.
   static base::LazyInstance<gfx::Image> default_folder_icon_;
   static base::LazyInstance<gfx::Image> default_bookmark_icon_;
 };
 
 #endif  // CHROME_BROWSER_UI_GTK_GTK_THEME_SERVICE_H_