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

components/leveldb_proto/proto_database_impl_unittest.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/leveldb_proto/proto_database_impl.h"
 
 #include <stddef.h>
 
 #include <map>
 #include <memory>
@@ skipping 629 matching lines @@
   KeyValueVector save_entries(1, std::make_pair("foo", "bar"));
   KeyVector remove_keys;
   ASSERT_TRUE(db->Save(save_entries, remove_keys));
 
   base::trace_event::MemoryDumpArgs dump_args = {
       base::trace_event::MemoryDumpLevelOfDetail::DETAILED};
   std::unique_ptr<base::trace_event::ProcessMemoryDump> process_memory_dump(
       new base::trace_event::ProcessMemoryDump(nullptr, dump_args));
   db->OnMemoryDump(dump_args, process_memory_dump.get());
 
-  const auto& allocator_dumps = process_memory_dump->allocator_dumps();
-  const char* system_allocator_pool_name =
-      base::trace_event::MemoryDumpManager::GetInstance()
-          ->system_allocator_pool_name();
-  size_t expected_dump_count = system_allocator_pool_name ? 2 : 1;
-  EXPECT_EQ(expected_dump_count, allocator_dumps.size());
-  for (const auto& dump : allocator_dumps) {
-    ASSERT_TRUE(dump.first.find("leveldb/leveldb_proto/") == 0 ||
-                dump.first.find(system_allocator_pool_name) == 0);
+  size_t leveldb_dump_count = 0;
+  for (const auto& dump : process_memory_dump->allocator_dumps()) {
+    if (dump.first.find("leveldb/leveldb_proto/") == 0) {
+      leveldb_dump_count++;
+    }
   }
+  ASSERT_EQ(1u, leveldb_dump_count);
 }
 
 }  // namespace leveldb_proto