Eliminate implicit conversion from scoped_refptr<T> to T*

webkit/appcache/appcache.h

 // Copyright (c) 2011 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.
 
 #ifndef WEBKIT_APPCACHE_APPCACHE_H_
 #define WEBKIT_APPCACHE_APPCACHE_H_
 
 #include <map>
 #include <set>
 #include <vector>
@@ skipping 18 matching lines @@
 // cache is being created during an appcache upate.
 class APPCACHE_EXPORT AppCache : public base::RefCounted<AppCache> {
  public:
   typedef std::map<GURL, AppCacheEntry> EntryMap;
   typedef std::set<AppCacheHost*> AppCacheHosts;
 
   AppCache(AppCacheService *service, int64 cache_id);
 
   int64 cache_id() const { return cache_id_; }
 
-  AppCacheGroup* owning_group() const { return owning_group_; }
+  scoped_ptr<AppCacheGroup> owning_group() const { return owning_group_; }
 
   bool is_complete() const { return is_complete_; }
   void set_complete(bool value) { is_complete_ = value; }
 
   AppCacheService* service() const { return service_; }
 
   // Adds a new entry. Entry must not already be in cache.
   void AddEntry(const GURL& url, const AppCacheEntry& entry);
 
   // Adds a new entry or modifies an existing entry by merging the types
@@ skipping 126 matching lines @@
   AppCacheService* service_;
 
   FRIEND_TEST_ALL_PREFIXES(AppCacheTest, InitializeWithManifest);
 
   DISALLOW_COPY_AND_ASSIGN(AppCache);
 };
 
 }  // namespace appcache
 
 #endif  // WEBKIT_APPCACHE_APPCACHE_H_