Change scoped_ptr to std::unique_ptr in //net/disk_cache.

net/disk_cache/memory/mem_backend_impl.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.
 
 // See net/disk_cache/disk_cache.h for the public interface of the cache.
 
 #ifndef NET_DISK_CACHE_MEMORY_MEM_BACKEND_IMPL_H_
 #define NET_DISK_CACHE_MEMORY_MEM_BACKEND_IMPL_H_
 
 #include <stdint.h>
@@ skipping 21 matching lines @@
 class NET_EXPORT_PRIVATE MemBackendImpl final : public Backend {
  public:
   explicit MemBackendImpl(net::NetLog* net_log);
   ~MemBackendImpl() override;
 
   // Returns an instance of a Backend implemented only in memory. The returned
   // object should be deleted when not needed anymore. max_bytes is the maximum
   // size the cache can grow to. If zero is passed in as max_bytes, the cache
   // will determine the value to use based on the available memory. The returned
   // pointer can be NULL if a fatal error is found.
-  static scoped_ptr<Backend> CreateBackend(int max_bytes, net::NetLog* net_log);
+  static std::unique_ptr<Backend> CreateBackend(int max_bytes,
+                                                net::NetLog* net_log);
 
   // Performs general initialization for this current instance of the cache.
   bool Init();
 
   // Sets the maximum size for the total amount of data stored by this instance.
   bool SetMaxSize(int max_bytes);
 
   // Returns the maximum size for a file to reside on the cache.
   int MaxFileSize() const;
 
@@ skipping 29 matching lines @@
                   const CompletionCallback& callback) override;
   int DoomEntry(const std::string& key,
                 const CompletionCallback& callback) override;
   int DoomAllEntries(const CompletionCallback& callback) override;
   int DoomEntriesBetween(base::Time initial_time,
                          base::Time end_time,
                          const CompletionCallback& callback) override;
   int DoomEntriesSince(base::Time initial_time,
                        const CompletionCallback& callback) override;
   int CalculateSizeOfAllEntries(const CompletionCallback& callback) override;
-  scoped_ptr<Iterator> CreateIterator() override;
+  std::unique_ptr<Iterator> CreateIterator() override;
   void GetStats(base::StringPairs* stats) override {}
   void OnExternalCacheHit(const std::string& key) override;
 
  private:
   class MemIterator;
   friend class MemIterator;
 
   typedef base::hash_map<std::string, MemEntryImpl*> EntryMap;
 
   // Deletes entries from the cache until the current size is below the limit.
@@ skipping 11 matching lines @@
   net::NetLog* net_log_;
 
   base::WeakPtrFactory<MemBackendImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(MemBackendImpl);
 };
 
 }  // namespace disk_cache
 
 #endif  // NET_DISK_CACHE_MEMORY_MEM_BACKEND_IMPL_H_