Adjust URLFetcher::Create API so that object is returned as scoped_ptr.

components/omnibox/search_provider.h

 // Copyright (c) 2012 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.
 //
 // This file contains the Search autocomplete provider.  This provider is
 // responsible for all autocomplete entries that start with "Search <engine>
 // for ...", including searching for the current input string, search
 // history, and search suggestions.  An instance of it gets created and
 // managed by the autocomplete controller.
 
@@ skipping 232 matching lines @@
   void PersistTopSuggestions(SearchSuggestionParser::Results* results);
 
   // Apply calculated relevance scores to the current results.
   void ApplyCalculatedSuggestRelevance(
       SearchSuggestionParser::SuggestResults* list);
   void ApplyCalculatedNavigationRelevance(
       SearchSuggestionParser::NavigationResults* list);
 
   // Starts a new URLFetcher requesting suggest results from |template_url|;
   // callers own the returned URLFetcher, which is NULL for invalid providers.
-  net::URLFetcher* CreateSuggestFetcher(int id,
-                                        const TemplateURL* template_url,
-                                        const AutocompleteInput& input);
+  scoped_ptr<net::URLFetcher> CreateSuggestFetcher(
+      int id,
+      const TemplateURL* template_url,
+      const AutocompleteInput& input);
 
   // Converts the parsed results to a set of AutocompleteMatches, |matches_|.
   void ConvertResultsToAutocompleteMatches();
 
   // Remove answer contents from each match in |matches| other than the first
   // that appears.
   static void RemoveExtraAnswers(ACMatches* matches);
 
   // Returns an iterator to the first match in |matches_| which might
   // be chosen as default.
@@ skipping 146 matching lines @@
   base::TimeTicks token_expiration_time_;
 
   // Answers prefetch management.
   AnswersCache answers_cache_;  // Cache for last answers seen.
   AnswersQueryData prefetch_data_;  // Data to use for query prefetching.
 
   DISALLOW_COPY_AND_ASSIGN(SearchProvider);
 };
 
 #endif  // COMPONENTS_OMNIBOX_SEARCH_PROVIDER_H_