Convert //components/[f-n]* from scoped_ptr to std::unique_ptr

components/leveldb/leveldb_database_impl.cc

Index: components/leveldb/leveldb_database_impl.cc
diff --git a/components/leveldb/leveldb_database_impl.cc b/components/leveldb/leveldb_database_impl.cc
index 6a64706985b17c1ae353d92186cbb19fd068342f..d300799cafe087d39bd95e8cadbe1e820aa4b8a4 100644
--- a/components/leveldb/leveldb_database_impl.cc
+++ b/components/leveldb/leveldb_database_impl.cc
@@ -32,8 +32,8 @@ uint64_t GetSafeRandomId(const std::map<uint64_t, T>& m) {
 
 LevelDBDatabaseImpl::LevelDBDatabaseImpl(
     leveldb::LevelDBDatabaseRequest request,
-    scoped_ptr<leveldb::Env> environment,
-    scoped_ptr<leveldb::DB> db)
+    std::unique_ptr<leveldb::Env> environment,
+    std::unique_ptr<leveldb::DB> db)
     : binding_(this, std::move(request)),
       environment_(std::move(environment)),
       db_(std::move(db)) {}