Make ExtensionInstallPrompt::Prompt ref-counted

chrome/browser/chromeos/file_manager/app_installer.cc

Index: chrome/browser/chromeos/file_manager/app_installer.cc
diff --git a/chrome/browser/chromeos/file_manager/app_installer.cc b/chrome/browser/chromeos/file_manager/app_installer.cc
index 637bc2f6477056633a66fdc9f424908a19af1938..65265a4ca7ef98c16b72c3b97bef7a2a3c697268 100644
--- a/chrome/browser/chromeos/file_manager/app_installer.cc
+++ b/chrome/browser/chromeos/file_manager/app_installer.cc
@@ -62,9 +62,9 @@ const GURL& AppInstaller::GetRequestorURL() const {
   return GURL::EmptyGURL();
 }
 
-scoped_ptr<ExtensionInstallPrompt::Prompt>
+scoped_refptr<ExtensionInstallPrompt::Prompt>
 AppInstaller::CreateInstallPrompt() const {
-  scoped_ptr<ExtensionInstallPrompt::Prompt> prompt(
+  scoped_refptr<ExtensionInstallPrompt::Prompt> prompt(
       new ExtensionInstallPrompt::Prompt(
           ExtensionInstallPrompt::INLINE_INSTALL_PROMPT));
 
@@ -72,7 +72,7 @@ AppInstaller::CreateInstallPrompt() const {
                           show_user_count(),
                           average_rating(),
                           rating_count());
-  return prompt.Pass();
+  return prompt;
 }
 
 bool AppInstaller::ShouldShowPostInstallUI() const {