/usr/include/gmock/ is in google-mock 1.6.0-0ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/gmock/gmock-actions.h
/usr/include/gmock/gmock-cardinalities.h
/usr/include/gmock/gmock-generated-actions.h
/usr/include/gmock/gmock-generated-function-mockers.h
/usr/include/gmock/gmock-generated-matchers.h
/usr/include/gmock/gmock-generated-nice-strict.h
/usr/include/gmock/gmock-matchers.h
/usr/include/gmock/gmock-more-actions.h
/usr/include/gmock/gmock-spec-builders.h
/usr/include/gmock/gmock.h
/usr/include/gmock/internal/
/usr/include/gmock/internal/gmock-generated-internal-utils.h
/usr/include/gmock/internal/gmock-internal-utils.h
/usr/include/gmock/internal/gmock-port.h