A few minor changes to the chrome.downloads extension API

chrome/browser/extensions/api/downloads/downloads_api.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_DOWNLOADS_DOWNLOADS_API_H_
 #define CHROME_BROWSER_EXTENSIONS_API_DOWNLOADS_DOWNLOADS_API_H_
 
 #include <string>
 
 #include "base/files/file_path.h"
@@ skipping 122 matching lines @@
 
 class DownloadsAcceptDangerFunction : public AsyncExtensionFunction {
  public:
   DECLARE_EXTENSION_FUNCTION("downloads.acceptDanger", DOWNLOADS_ACCEPTDANGER)
   DownloadsAcceptDangerFunction();
   virtual bool RunImpl() OVERRIDE;
 
  protected:
   virtual ~DownloadsAcceptDangerFunction();
   void DangerPromptCallback(bool accept, int download_id);
+  void DangerPromptDestroyed();
 
  private:
   DISALLOW_COPY_AND_ASSIGN(DownloadsAcceptDangerFunction);
 };
 
 class DownloadsShowFunction : public AsyncExtensionFunction {
  public:
   DECLARE_EXTENSION_FUNCTION("downloads.show", DOWNLOADS_SHOW)
   DownloadsShowFunction();
   virtual bool RunImpl() OVERRIDE;
@@ skipping 118 matching lines @@
       const extensions::Event::WillDispatchCallback& will_dispatch_callback,
       base::Value* json_arg);
 
   Profile* profile_;
   AllDownloadItemNotifier notifier_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionDownloadsEventRouter);
 };
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_DOWNLOADS_DOWNLOADS_API_H_