New BootControlInterface implementation for Android.
This patch hides the platform-specific construction of a
BootControlInterface in a factory method shared by both Android and
Chromium OS. This also include a stub implementation for Android.
Bug: 23754584,23084776
TEST=emerge-link update_engine; `mma -i` builds these files without problem.
Change-Id: I43532e5cff1dc474453160f418ddd3c448f31938
diff --git a/boot_control.h b/boot_control.h
new file mode 100644
index 0000000..d6c403b
--- /dev/null
+++ b/boot_control.h
@@ -0,0 +1,34 @@
+//
+// Copyright (C) 2015 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 UPDATE_ENGINE_BOOT_CONTROL_H_
+#define UPDATE_ENGINE_BOOT_CONTROL_H_
+
+#include <memory>
+
+#include "update_engine/boot_control_interface.h"
+
+namespace chromeos_update_engine {
+namespace boot_control {
+
+// The real BootControlInterface is platform-specific. This factory function
+// creates a new BootControlInterface instance for the current platform.
+std::unique_ptr<BootControlInterface> CreateBootControl();
+
+} // namespace boot_control
+} // namespace chromeos_update_engine
+
+#endif // UPDATE_ENGINE_BOOT_CONTROL_H_
