Make the system tray icons display when using KDE4 and plasma

chrome/browser/ui/libgtk2ui/app_indicator_icon.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_UI_LIBGTK2UI_APP_INDICATOR_ICON_H_
 #define CHROME_BROWSER_UI_LIBGTK2UI_APP_INDICATOR_ICON_H_
 
 #include "base/files/file_path.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
@@ skipping 42 matching lines @@
   // icon click action. Clicking on this menu item should simulate a status icon
   // click by despatching a click event.
   void UpdateClickActionReplacementMenuItem();
 
   // Callback for when the status icon click replacement menu item is activated.
   void OnClickActionReplacementMenuItemActivated();
 
   std::string id_;
   std::string tool_tip_;
 
+  // Whether the user is using KDE.
+  bool using_kde4_;
+
   // Gtk status icon wrapper
   AppIndicator* icon_;
 
   scoped_ptr<AppIndicatorIconMenu> menu_;
   ui::MenuModel* menu_model_;
 
   base::FilePath icon_file_path_;
   int icon_change_count_;
 
   base::WeakPtrFactory<AppIndicatorIcon> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(AppIndicatorIcon);
 };
 
 }  // namespace libgtk2ui
 
 #endif  // CHROME_BROWSER_UI_LIBGTK2UI_APP_INDICATOR_ICON_H_