GTTF: Add missing virtual destructors.

chrome/browser/extensions/extension_keybinding_registry.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_EXTENSIONS_EXTENSION_KEYBINDING_REGISTRY_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_KEYBINDING_REGISTRY_H_
 
 #include <string>
 
 #include "base/compiler_specific.h"
@@ skipping 17 matching lines @@
   enum ExtensionFilter {
     ALL_EXTENSIONS,
     PLATFORM_APPS_ONLY
   };
 
   class Delegate {
    public:
     // Gets the ActiveTabPermissionGranter for the active tab, if any.
     // If there is no active tab then returns NULL.
     virtual ActiveTabPermissionGranter* GetActiveTabPermissionGranter() = 0;
+
+   protected:
+    virtual ~Delegate() { }
   };
 
   // If |extension_filter| is not ALL_EXTENSIONS, only keybindings by
   // by extensions that match the filter will be registered.
   ExtensionKeybindingRegistry(Profile* profile,
                               ExtensionFilter extension_filter,
                               Delegate* delegate);
 
   virtual ~ExtensionKeybindingRegistry();
 
@@ skipping 45 matching lines @@
 
   // Weak pointer to our delegate. Not owned by us. Must outlive this class.
   Delegate* delegate_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionKeybindingRegistry);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_KEYBINDING_REGISTRY_H_