Use leveldb_env::OpenDB() to open leveldb databases.

chrome/browser/sync_file_system/drive_backend/metadata_database_index_unittest.cc

Index: chrome/browser/sync_file_system/drive_backend/metadata_database_index_unittest.cc
diff --git a/chrome/browser/sync_file_system/drive_backend/metadata_database_index_unittest.cc b/chrome/browser/sync_file_system/drive_backend/metadata_database_index_unittest.cc
index 657807999b7ece55f04b579c6916057b3be4b45f..eb808178d490d70eee548e1bba78991d38353196 100644
--- a/chrome/browser/sync_file_system/drive_backend/metadata_database_index_unittest.cc
+++ b/chrome/browser/sync_file_system/drive_backend/metadata_database_index_unittest.cc
@@ -15,6 +15,7 @@
 #include "chrome/browser/sync_file_system/drive_backend/metadata_database.h"
 #include "chrome/browser/sync_file_system/drive_backend/metadata_database.pb.h"
 #include "testing/gtest/include/gtest/gtest.h"
+#include "third_party/leveldatabase/env_chromium.h"
 #include "third_party/leveldatabase/src/helpers/memenv/memenv.h"
 #include "third_party/leveldatabase/src/include/leveldb/db.h"
 #include "third_party/leveldatabase/src/include/leveldb/env.h"
@@ -81,15 +82,15 @@ class MetadataDatabaseIndexTest : public testing::Test {
 
  private:
   void InitializeLevelDB() {
-    leveldb::DB* db = nullptr;
+    std::unique_ptr<leveldb::DB> db;
     leveldb::Options options;
     options.create_if_missing = true;
     options.max_open_files = 0;  // Use minimum.
     options.env = in_memory_env_.get();
-    leveldb::Status status = leveldb::DB::Open(options, "", &db);
+    leveldb::Status status = leveldb_env::OpenDB(options, "", &db);
     ASSERT_TRUE(status.ok());
 
-    db_.reset(new LevelDBWrapper(base::WrapUnique(db)));
+    db_.reset(new LevelDBWrapper(std::move(db)));
   }
 
   std::unique_ptr<DatabaseContents> contents_;