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

chrome/browser/search/hotword_installer_browsertest.cc

 // 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.
 
+#include "base/memory/scoped_ptr.h"
 #include "chrome/browser/extensions/extension_browsertest.h"
 #include "chrome/browser/extensions/webstore_startup_installer.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/search/hotword_service.h"
 #include "chrome/browser/search/hotword_service_factory.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/extensions/extension_constants.h"
 #include "chrome/common/extensions/webstore_install_result.h"
 #include "chrome/test/base/testing_profile.h"
 #include "content/public/test/test_utils.h"
@@ skipping 45 matching lines @@
                          bool success,
                          const std::string& error,
                          extensions::webstore_install::Result result) {
   }
 
  private:
   Profile* profile_;
   base::WeakPtrFactory<MockHotwordService> weak_factory_;
 };
 
-KeyedService* BuildMockHotwordService(content::BrowserContext* context) {
-  return new MockHotwordService(static_cast<Profile*>(context));
+scoped_ptr<KeyedService> BuildMockHotwordService(
+    content::BrowserContext* context) {
+  return make_scoped_ptr(
+      new MockHotwordService(static_cast<Profile*>(context)));
 }
 
 }  // namespace
 
 namespace extensions {
 
 class HotwordInstallerBrowserTest : public ExtensionBrowserTest {
  public:
   HotwordInstallerBrowserTest() {}
   ~HotwordInstallerBrowserTest() override {}
 
  private:
    DISALLOW_COPY_AND_ASSIGN(HotwordInstallerBrowserTest);
 };
 
 // Test that installing to a non-existent URL (which should hang) does not
 // crash. This test is successful if it does not crash and trigger any DCHECKS.
 IN_PROC_BROWSER_TEST_F(HotwordInstallerBrowserTest, AbortInstallOnShutdown) {
   TestingProfile test_profile;
   HotwordServiceFactory* hotword_service_factory =
       HotwordServiceFactory::GetInstance();
   MockHotwordService* hotword_service = static_cast<MockHotwordService*>(
       hotword_service_factory->SetTestingFactoryAndUse(
           &test_profile, BuildMockHotwordService));
   hotword_service->InstallHotwordExtensionFromWebstore(1);
 }
 
 }  // namespace extensions