Delete the GTK+ port of Chrome.

content/shell/browser/shell_javascript_dialog.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 CONTENT_SHELL_BROWSER_SHELL_JAVASCRIPT_DIALOG_H_
 #define CONTENT_SHELL_BROWSER_SHELL_JAVASCRIPT_DIALOG_H_
 
 #include "content/public/browser/javascript_dialog_manager.h"
 
-#if defined(TOOLKIT_GTK)
-#include "ui/base/gtk/gtk_signal.h"
-#endif
-
 #if defined(OS_MACOSX)
 #if __OBJC__
 @class ShellJavaScriptDialogHelper;
 #else
 class ShellJavaScriptDialogHelper;
 #endif  // __OBJC__
 #endif  // defined(OS_MACOSX)
 
 namespace content {
 
@@ skipping 19 matching lines @@
 
 #if defined(OS_MACOSX)
   ShellJavaScriptDialogHelper* helper_;  // owned
 #elif defined(OS_WIN)
   JavaScriptMessageType message_type_;
   HWND dialog_win_;
   base::string16 message_text_;
   base::string16 default_prompt_text_;
   static INT_PTR CALLBACK DialogProc(HWND dialog, UINT message, WPARAM wparam,
                                      LPARAM lparam);
-#elif defined(TOOLKIT_GTK)
-  GtkWidget* gtk_dialog_;
-  gfx::NativeWindow parent_window_;
-  CHROMEGTK_CALLBACK_1(ShellJavaScriptDialog, void, OnResponse, int);
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(ShellJavaScriptDialog);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_SHELL_BROWSER_SHELL_JAVASCRIPT_DIALOG_H_