GTTF: Add missing virtual destructors.

chrome/browser/extensions/api/developer_private/entry_picker.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_API_DEVELOPER_PRIVATE_ENTRY_PICKER_H_
 #define CHROME_BROWSER_EXTENSIONS_API_DEVELOPER_PRIVATE_ENTRY_PICKER_H_
 
 #include "chrome/browser/extensions/extension_function.h"
 #include "ui/shell_dialogs/select_file_dialog.h"
 
 namespace content {
 class WebContents;
 }
 
 namespace extensions {
 
 namespace api {
 
 class EntryPickerClient {
  public:
   virtual void FileSelected(const FilePath& path) = 0;
   virtual void FileSelectionCanceled() = 0;
+
+ protected:
+  virtual ~EntryPickerClient() { }
 };
 
 // Handles showing a dialog to the user to ask for the directory name.
 class EntryPicker : public ui::SelectFileDialog::Listener {
  public:
   EntryPicker(EntryPickerClient* client,
               content::WebContents* web_contents,
               ui::SelectFileDialog::Type picker_type,
               const FilePath& last_directory,
               const string16& select_title);
@@ skipping 19 matching lines @@
   EntryPickerClient* client_;
 
   DISALLOW_COPY_AND_ASSIGN(EntryPicker);
 };
 
 }  // namespace api
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_DEVELOPER_PRIVATE_ENTRY_PICKER_H_