Add gmock into our dependencies.

third_party/boost/boost/preprocessor/detail/is_binary.hpp

Index: third_party/boost/boost/preprocessor/detail/is_binary.hpp
diff --git a/third_party/boost/boost/preprocessor/detail/is_binary.hpp b/third_party/boost/boost/preprocessor/detail/is_binary.hpp
new file mode 100644
index 0000000000000000000000000000000000000000..3428833d649d331bae28c8fd1e565178c457a6d7
--- /dev/null
+++ b/third_party/boost/boost/preprocessor/detail/is_binary.hpp
@@ -0,0 +1,30 @@
+# /* **************************************************************************
+#  *                                                                          *
+#  *     (C) Copyright Paul Mensonides 2002.
+#  *     Distributed under the Boost Software License, Version 1.0. (See
+#  *     accompanying file LICENSE_1_0.txt or copy at
+#  *     http://www.boost.org/LICENSE_1_0.txt)
+#  *                                                                          *
+#  ************************************************************************** */
+#
+# /* See http://www.boost.org for most recent version. */
+#
+# ifndef BOOST_PREPROCESSOR_DETAIL_IS_BINARY_HPP
+# define BOOST_PREPROCESSOR_DETAIL_IS_BINARY_HPP
+#
+# include <boost/preprocessor/config/config.hpp>
+# include <boost/preprocessor/detail/check.hpp>
+#
+# /* BOOST_PP_IS_BINARY */
+#
+# if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG()
+#    define BOOST_PP_IS_BINARY(x) BOOST_PP_CHECK(x, BOOST_PP_IS_BINARY_CHECK)
+# else
+#    define BOOST_PP_IS_BINARY(x) BOOST_PP_IS_BINARY_I(x)
+#    define BOOST_PP_IS_BINARY_I(x) BOOST_PP_CHECK(x, BOOST_PP_IS_BINARY_CHECK)
+# endif
+#
+# define BOOST_PP_IS_BINARY_CHECK(a, b) 1
+# define BOOST_PP_CHECK_RESULT_BOOST_PP_IS_BINARY_CHECK 0, BOOST_PP_NIL
+#
+# endif