mojo leveldb: Get profile and leveldb connected to DOMStorageContext.

components/profile_service/user_id_map.cc

+// Copyright 2016 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/profile_service/user_id_map.h"
+
+#include <map>
+
+#include "base/lazy_instance.h"
+
+namespace profile {
+
+namespace {
+base::LazyInstance<std::map<std::string, base::FilePath>>
+    g_user_id_to_data_dir = LAZY_INSTANCE_INITIALIZER;
+}  // namespace
+
+void AssociateMojoUserIDWithProfileDir(const std::string& user_id,
+                                       const base::FilePath& profile_data_dir) {
+  g_user_id_to_data_dir.Get()[user_id] = profile_data_dir;
+}
+
+base::FilePath GetProfileDirForUserID(const std::string& user_id) {
+  auto it = g_user_id_to_data_dir.Get().find(user_id);
+  DCHECK(it != g_user_id_to_data_dir.Get().end());
+  return it->second;
+}
+
+}  // namespace profile