[Cleanup] Used scoped pointers in KeyedServiceFactory's SetTestingFactory functions.

chrome/browser/ui/startup/session_crashed_infobar_delegate_unittest.cc

 // Copyright (c) 2013 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.
 
 #include "chrome/browser/ui/startup/session_crashed_infobar_delegate.h"
 
 #include "base/files/scoped_temp_dir.h"
 #include "base/prefs/pref_registry_simple.h"
 #include "base/prefs/testing_pref_service.h"
 #include "base/run_loop.h"
@@ skipping 33 matching lines @@
   }
 
  private:
   TestingPrefServiceSimple pref_service;
   base::ScopedTempDir temp_dir_;
 };
 
 TEST_F(SessionCrashedInfoBarDelegateUnitTest, DetachingTabWithCrashedInfoBar) {
   SessionServiceFactory::SetForTestProfile(
       browser()->profile(),
-      static_cast<SessionService*>(
+      make_scoped_ptr(static_cast<SessionService*>(
           SessionServiceFactory::GetInstance()->BuildServiceInstanceFor(
-              browser()->profile())));
+              browser()->profile()))));
 
   // Create a browser which we can close during the test.
   Browser::CreateParams params(browser()->profile(),
                                browser()->host_desktop_type());
   scoped_ptr<Browser> first_browser(
       chrome::CreateBrowserWithTestWindowForParams(&params));
   AddTab(first_browser.get(), GURL(chrome::kChromeUINewTabURL));
 
   // Attach the crashed infobar to it.
   SessionCrashedInfoBarDelegate::Create(first_browser.get());
@@ skipping 25 matching lines @@
   infobar_service =
       InfoBarService::FromWebContents(tab_strip->GetWebContentsAt(0));
   EXPECT_EQ(1U, infobar_service->infobar_count());
 
   // This used to crash.
   infobar->Accept();
 
   // Ramp down the test.
   tab_strip->CloseWebContentsAt(0, TabStripModel::CLOSE_NONE);
 }