Make ExtensionInstallPrompt::Prompt ref-counted

chrome/browser/extensions/webstore_install_with_prompt.h

 // Copyright 2014 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_WEBSTORE_INSTALL_WITH_PROMPT_H_
 #define CHROME_BROWSER_EXTENSIONS_WEBSTORE_INSTALL_WITH_PROMPT_H_
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "chrome/browser/extensions/webstore_standalone_installer.h"
@@ skipping 36 matching lines @@
  protected:
   friend class base::RefCountedThreadSafe<WebstoreInstallWithPrompt>;
   virtual ~WebstoreInstallWithPrompt();
 
   // extensions::WebstoreStandaloneInstaller overrides:
   virtual bool CheckRequestorAlive() const OVERRIDE;
   virtual const GURL& GetRequestorURL() const OVERRIDE;
   virtual bool ShouldShowPostInstallUI() const OVERRIDE;
   virtual bool ShouldShowAppInstalledBubble() const OVERRIDE;
   virtual content::WebContents* GetWebContents() const OVERRIDE;
-  virtual scoped_ptr<ExtensionInstallPrompt::Prompt> CreateInstallPrompt()
+  virtual scoped_refptr<ExtensionInstallPrompt::Prompt> CreateInstallPrompt()
       const OVERRIDE;
   virtual scoped_ptr<ExtensionInstallPrompt> CreateInstallUI() OVERRIDE;
   virtual bool CheckInlineInstallPermitted(
       const base::DictionaryValue& webstore_data,
       std::string* error) const OVERRIDE;
   virtual bool CheckRequestorPermitted(
       const base::DictionaryValue& webstore_data,
       std::string* error) const OVERRIDE;
 
   // content::PageNavigator overrides:
   virtual content::WebContents* OpenURL(
       const content::OpenURLParams& params) OVERRIDE;
 
  private:
   GURL dummy_requestor_url_;
 
   // A non-visible WebContents used to download data from the webstore.
   scoped_ptr<content::WebContents> dummy_web_contents_;
 
   gfx::NativeWindow parent_window_;
 
   DISALLOW_COPY_AND_ASSIGN(WebstoreInstallWithPrompt);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_WEBSTORE_INSTALL_WITH_PROMPT_H_