/usr/include/google/ is in libprotobuf-dev 2.5.0-9ubuntu1.
This file is owned by root:root, with mode 0o755.
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/usr/include/google/protobuf/
/usr/include/google/protobuf/descriptor.h
/usr/include/google/protobuf/descriptor.pb.h
/usr/include/google/protobuf/descriptor.proto
/usr/include/google/protobuf/descriptor_database.h
/usr/include/google/protobuf/dynamic_message.h
/usr/include/google/protobuf/extension_set.h
/usr/include/google/protobuf/generated_enum_reflection.h
/usr/include/google/protobuf/generated_message_reflection.h
/usr/include/google/protobuf/generated_message_util.h
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/usr/include/google/protobuf/io/zero_copy_stream_impl.h
/usr/include/google/protobuf/io/zero_copy_stream_impl_lite.h
/usr/include/google/protobuf/message.h
/usr/include/google/protobuf/message_lite.h
/usr/include/google/protobuf/reflection_ops.h
/usr/include/google/protobuf/repeated_field.h
/usr/include/google/protobuf/service.h
/usr/include/google/protobuf/stubs/
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/usr/include/google/protobuf/stubs/atomicops_internals_arm_qnx.h
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/usr/include/google/protobuf/stubs/platform_macros.h
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/usr/include/google/protobuf/unknown_field_set.h
/usr/include/google/protobuf/wire_format.h
/usr/include/google/protobuf/wire_format_lite.h
/usr/include/google/protobuf/wire_format_lite_inl.h