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

chrome/browser/autocomplete/autocomplete_classifier_factory.h

Index: chrome/browser/autocomplete/autocomplete_classifier_factory.h
diff --git a/chrome/browser/autocomplete/autocomplete_classifier_factory.h b/chrome/browser/autocomplete/autocomplete_classifier_factory.h
index 84ef185a9620e087105faead91f22dc7cfa73254..bfacf2129de37765b36960673f9030bfa07dfd6b 100644
--- a/chrome/browser/autocomplete/autocomplete_classifier_factory.h
+++ b/chrome/browser/autocomplete/autocomplete_classifier_factory.h
@@ -6,6 +6,7 @@
 #define CHROME_BROWSER_AUTOCOMPLETE_AUTOCOMPLETE_CLASSIFIER_FACTORY_H_
 
 #include "base/basictypes.h"
+#include "base/memory/scoped_ptr.h"
 #include "base/memory/singleton.h"
 #include "components/keyed_service/content/browser_context_keyed_service_factory.h"
 
@@ -21,7 +22,8 @@ class AutocompleteClassifierFactory : public BrowserContextKeyedServiceFactory {
 
   static AutocompleteClassifierFactory* GetInstance();
 
-  static KeyedService* BuildInstanceFor(content::BrowserContext* context);
+  static scoped_ptr<KeyedService> BuildInstanceFor(
+      content::BrowserContext* context);
 
  private:
   friend struct DefaultSingletonTraits<AutocompleteClassifierFactory>;