floss: Add a libflags shim

The code generated by aconfig depends on libflags.
To be able to use aconfig on floss we add a shim version of
libflags.

Bug: 307006275
Flag: EXEMPT, floss
Test: N/A
Change-Id: I7bcc42a0bd4fc86b74fd83a7101d1a82bb6c62dc

3 files changed, 78 insertions, 0 deletions

diff --git a/floss/libflags/BUILD.gn b/floss/libflags/BUILD.gn
new file mode 100644
index 0000000000..6a3fb5d768
--- /dev/null
+++ b/floss/libflags/BUILD.gn
@@ -0,0 +1,25 @@
+#
+#  Copyright 2024 Google, Inc.
+#
+#  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.
+#
+
+config("libflags_config") {
+  include_dirs = [ "include" ]
+}
+
+static_library("libflags") {
+  sources = [ "get_flags.cc" ]
+  include_dirs = [ "//bt/system" ]
+  public_configs = [ ":libflags_config" ]
+}
diff --git a/floss/libflags/get_flags.cc b/floss/libflags/get_flags.cc
new file mode 100644
index 0000000000..d7152e2edb
--- /dev/null
+++ b/floss/libflags/get_flags.cc
@@ -0,0 +1,26 @@
+/*
+ * Copyright (C) 2024 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
+ */
+
+#include "server_configurable_flags/get_flags.h"
+
+namespace server_configurable_flags {
+
+std::string GetServerConfigurableFlag(
+    const std::string& experiment_category_name,
+    const std::string& experiment_flag_name, const std::string& default_value) {
+  return default_value;
+}
+}  // namespace server_configurable_flags
diff --git a/floss/libflags/include/server_configurable_flags/get_flags.h b/floss/libflags/include/server_configurable_flags/get_flags.h
new file mode 100644
index 0000000000..04f413e749
--- /dev/null
+++ b/floss/libflags/include/server_configurable_flags/get_flags.h
@@ -0,0 +1,27 @@
+/*
+ * Copyright (C) 2024 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
+ */
+
+#pragma once
+
+#include <string>
+
+namespace server_configurable_flags {
+
+std::string GetServerConfigurableFlag(
+    const std::string& experiment_category_name,
+    const std::string& experiment_flag_name, const std::string& default_value);
+
+}  // namespace server_configurable_flags