Clean-up inline members of nested classes (chrome/)

chrome/browser/ui/gtk/menu_gtk.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_MENU_GTK_H_
 #define CHROME_BROWSER_UI_GTK_MENU_GTK_H_
 
 #include <gtk/gtk.h>
 
 #include <string>
@@ skipping 25 matching lines @@
     // the menu and/or the delegate.
     virtual void CommandWillBeExecuted() {}
 
     // Called when the menu stops showing. This will be called before
     // ExecuteCommand if the user clicks an item, but will also be called when
     // the user clicks away from the menu.
     virtual void StoppedShowing() {}
 
     // Return true if we should override the "gtk-menu-images" system setting
     // when showing image menu items for this menu.
-    virtual bool AlwaysShowIconForCmd(int command_id) const { return false; }
+    virtual bool AlwaysShowIconForCmd(int command_id) const;
 
     // Returns a tinted image used in button in a menu.
-    virtual GtkIconSet* GetIconSetForId(int idr) { return NULL; }
+    virtual GtkIconSet* GetIconSetForId(int idr);
 
     // Returns an icon for the menu item, if available.
     virtual GtkWidget* GetImageForCommandId(int command_id) const;
 
     static GtkWidget* GetDefaultImageForCommandId(int command_id);
   };
 
   MenuGtk(MenuGtk::Delegate* delegate, ui::MenuModel* model);
   virtual ~MenuGtk();
 
@@ skipping 139 matching lines @@
   // menu items from getting activated when we are setting up the
   // menu.
   static bool block_activation_;
 
   ui::GtkSignalRegistrar signal_;
 
   base::WeakPtrFactory<MenuGtk> weak_factory_;
 };
 
 #endif  // CHROME_BROWSER_UI_GTK_MENU_GTK_H_