Simplify the JavaScriptDialogManager.

components/app_modal/app_modal_dialog.h

 // Copyright (c) 2011 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 COMPONENTS_APP_MODAL_APP_MODAL_DIALOG_H_
 #define COMPONENTS_APP_MODAL_APP_MODAL_DIALOG_H_
 
 #include <string>
 
 #include "base/macros.h"
@@ skipping 37 matching lines @@
   // Returns true if the dialog is still valid. As dialogs are created they are
   // added to the AppModalDialogQueue. When the current modal dialog finishes
   // and it's time to show the next dialog in the queue IsValid is invoked.
   // If IsValid returns false the dialog is deleted and not shown.
   bool IsValid();
 
   // Methods overridable by AppModalDialog subclasses:
 
   // Invalidates the dialog, therefore causing it to not be shown when its turn
   // to be shown comes around.
-  virtual void Invalidate();
+  virtual void Invalidate(bool suppress_callbacks);
 
   // Used only for testing. Returns whether the dialog is a JavaScript modal
   // dialog.
   virtual bool IsJavaScriptModalDialog();
 
  protected:
   // Overridden by subclasses to create the feature-specific native dialog box.
   virtual NativeAppModalDialog* CreateNativeDialog() = 0;
 
  private:
@@ skipping 24 matching lines @@
   // Called when the modal dialog is shown.
   virtual void Notify(AppModalDialog* dialog) = 0;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(AppModalDialogObserver);
 };
 
 }  // namespace app_modal
 
 #endif  // COMPONENTS_APP_MODAL_APP_MODAL_DIALOG_H_