/usr/include/android/ is in android-platform-frameworks-native-headers 1:6.0.1+r16-1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/android/android/
/usr/include/android/android/asset_manager.h
/usr/include/android/android/asset_manager_jni.h
/usr/include/android/android/bitmap.h
/usr/include/android/android/configuration.h
/usr/include/android/android/input.h
/usr/include/android/android/keycodes.h
/usr/include/android/android/looper.h
/usr/include/android/android/multinetwork.h
/usr/include/android/android/native_activity.h
/usr/include/android/android/native_window.h
/usr/include/android/android/native_window_jni.h
/usr/include/android/android/obb.h
/usr/include/android/android/rect.h
/usr/include/android/android/sensor.h
/usr/include/android/android/storage_manager.h
/usr/include/android/android/trace.h
/usr/include/android/android/window.h