Add file.h to berberis/base

Test: builds
Bug: http://b/265372622
Change-Id: I1a00d06dd949986945a5196119b73b4c448fd2ff
diff --git a/base/include/berberis/base/file.h b/base/include/berberis/base/file.h
new file mode 100644
index 0000000..6c756d5
--- /dev/null
+++ b/base/include/berberis/base/file.h
@@ -0,0 +1,33 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef BERBERIS_BASE_FILE_H_
+#define BERBERIS_BASE_FILE_H_
+
+#include <android-base/file.h>
+
+namespace berberis {
+
+using android::base::Realpath;
+
+using android::base::Basename;
+using android::base::Dirname;
+
+using android::base::GetExecutableDirectory;
+
+}  // namespace berberis
+
+#endif  // BERBERIS_BASE_FILE_H_