AppCache: Ensure inflight ActiveCalls are not destroyed

content/browser/appcache/appcache_disk_cache.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.
 
 #ifndef CONTENT_BROWSER_APPCACHE_APPCACHE_DISK_CACHE_H_
 #define CONTENT_BROWSER_APPCACHE_APPCACHE_DISK_CACHE_H_
 
 #include <set>
 #include <vector>
 
@@ skipping 78 matching lines @@
     return create_backend_callback_.get() != NULL;
   }
   disk_cache::Backend* disk_cache() { return disk_cache_.get(); }
   int Init(net::CacheType cache_type,
            const base::FilePath& directory,
            int cache_size,
            bool force,
            const scoped_refptr<base::SingleThreadTaskRunner>& cache_thread,
            const net::CompletionCallback& callback);
   void OnCreateBackendComplete(int rv);
-  void AddActiveCall(ActiveCall* call) { active_calls_.insert(call); }
-  void RemoveActiveCall(ActiveCall* call) { active_calls_.erase(call); }
   void AddOpenEntry(EntryImpl* entry) { open_entries_.insert(entry); }
   void RemoveOpenEntry(EntryImpl* entry) { open_entries_.erase(entry); }
 
   bool is_disabled_;
   net::CompletionCallback init_callback_;
   scoped_refptr<CreateBackendCallbackShim> create_backend_callback_;
   PendingCalls pending_calls_;
-  ActiveCalls active_calls_;
   OpenEntries open_entries_;
   scoped_ptr<disk_cache::Backend> disk_cache_;
+
+  base::WeakPtrFactory<AppCacheDiskCache> weak_factory_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_APPCACHE_APPCACHE_DISK_CACHE_H_