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

net/disk_cache/blockfile/backend_impl.h

Index: net/disk_cache/blockfile/backend_impl.h
diff --git a/net/disk_cache/blockfile/backend_impl.h b/net/disk_cache/blockfile/backend_impl.h
index 89edef2eb58417447921e0d16655ce001a21ff0e..cbc854bf591662b1a54ecc821ab13d52100d8619 100644
--- a/net/disk_cache/blockfile/backend_impl.h
+++ b/net/disk_cache/blockfile/backend_impl.h
@@ -79,7 +79,7 @@ class NET_EXPORT_PRIVATE BackendImpl : public Backend {
   int SyncCalculateSizeOfAllEntries();
   int SyncDoomEntriesSince(base::Time initial_time);
   int SyncOpenNextEntry(Rankings::Iterator* iterator, Entry** next_entry);
-  void SyncEndEnumeration(scoped_ptr<Rankings::Iterator> iterator);
+  void SyncEndEnumeration(std::unique_ptr<Rankings::Iterator> iterator);
   void SyncOnExternalCacheHit(const std::string& key);
 
   // Open or create an entry for the given |key| or |iter|.
@@ -288,7 +288,7 @@ class NET_EXPORT_PRIVATE BackendImpl : public Backend {
   // the iterator (for example, deleting the entry) will invalidate the
   // iterator. Performing operations on an entry that modify the entry may
   // result in loops in the iteration, skipped entries or similar.
-  scoped_ptr<Iterator> CreateIterator() override;
+  std::unique_ptr<Iterator> CreateIterator() override;
   void GetStats(StatsItems* stats) override;
   void OnExternalCacheHit(const std::string& key) override;
 
@@ -403,7 +403,7 @@ class NET_EXPORT_PRIVATE BackendImpl : 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.
   base::WaitableEvent done_;  // Signals the end of background work.
   scoped_refptr<TraceObject> trace_object_;  // Initializes internal tracing.
   base::WeakPtrFactory<BackendImpl> ptr_factory_;