Convert //content/browser from scoped_ptr to std::unique_ptr

content/browser/notifications/notification_database.h

Index: content/browser/notifications/notification_database.h
diff --git a/content/browser/notifications/notification_database.h b/content/browser/notifications/notification_database.h
index e5914e1abf1a7bc80517cda3e914a36f1cd6f23f..00fae877dae125856affdd46707b08559227d108 100644
--- a/content/browser/notifications/notification_database.h
+++ b/content/browser/notifications/notification_database.h
@@ -7,12 +7,12 @@
 
 #include <stdint.h>
 
+#include <memory>
 #include <set>
 #include <vector>
 
 #include "base/files/file_path.h"
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/sequence_checker.h"
 #include "content/common/content_export.h"
 
@@ -185,12 +185,12 @@ class CONTENT_EXPORT NotificationDatabase {
 
   int64_t next_notification_id_ = 0;
 
-  scoped_ptr<const leveldb::FilterPolicy> filter_policy_;
+  std::unique_ptr<const leveldb::FilterPolicy> filter_policy_;
 
   // The declaration order for these members matters, as |db_| depends on |env_|
   // and thus has to be destructed first.
-  scoped_ptr<leveldb::Env> env_;
-  scoped_ptr<leveldb::DB> db_;
+  std::unique_ptr<leveldb::Env> env_;
+  std::unique_ptr<leveldb::DB> db_;
 
   State state_ = STATE_UNINITIALIZED;