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

net/disk_cache/blockfile/backend_impl_v3.h

Index: net/disk_cache/blockfile/backend_impl_v3.h
diff --git a/net/disk_cache/blockfile/backend_impl_v3.h b/net/disk_cache/blockfile/backend_impl_v3.h
index df51c2137afd9b10f3b8735026b25523e4e0983b..727c3a6be08e52827c1092b70f013f9e41fc1556 100644
--- a/net/disk_cache/blockfile/backend_impl_v3.h
+++ b/net/disk_cache/blockfile/backend_impl_v3.h
@@ -192,7 +192,7 @@ class NET_EXPORT_PRIVATE BackendImplV3 : public Backend {
   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(StatsItems* stats) override;
   void OnExternalCacheHit(const std::string& key) override;
 
@@ -275,7 +275,7 @@ class NET_EXPORT_PRIVATE BackendImplV3 : public Backend {
   net::NetLog* net_log_;
 
   Stats stats_;  // Usage statistics.
-  scoped_ptr<base::RepeatingTimer> timer_;   // Usage timer.
+  std::unique_ptr<base::RepeatingTimer> timer_;  // Usage timer.
   scoped_refptr<TraceObject> trace_object_;  // Initializes internal tracing.
   base::WeakPtrFactory<BackendImplV3> ptr_factory_;