Cancel uninstall if the uninstall dialog's parent window is destroyed

chrome/browser/extensions/extension_uninstall_dialog.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_UNINSTALL_DIALOG_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_UNINSTALL_DIALOG_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/memory/weak_ptr.h"
@@ skipping 45 matching lines @@
 
   // This shows the same dialog as above, except it also shows which extension
   // triggered the dialog by calling chrome.management.uninstall API.
   void ConfirmProgrammaticUninstall(const Extension* extension,
                                     const Extension* triggering_extension);
 
   std::string GetHeadingText();
 
  protected:
   // Constructor used by the derived classes.
-  ExtensionUninstallDialog(Profile* profile,
-                           gfx::NativeWindow parent,
-                           Delegate* delegate);
+  ExtensionUninstallDialog(Profile* profile, Delegate* delegate);
 
   // TODO(sashab): Remove protected members: crbug.com/397395
   Profile* const profile_;
 
-  // TODO(sashab): Investigate lifetime issue of this window variable:
-  // crbug.com/397396
-  gfx::NativeWindow parent_;
-
   // The delegate we will call Accepted/Canceled on after confirmation dialog.
   Delegate* delegate_;
 
   // The extension we are showing the dialog for.
   const Extension* extension_;
 
   // The extension triggering the dialog if the dialog was shown by
   // chrome.management.uninstall.
   const Extension* triggering_extension_;
 
@@ skipping 12 matching lines @@
   virtual void Show() = 0;
 
   base::MessageLoop* ui_loop_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionUninstallDialog);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_UNINSTALL_DIALOG_H_