Add gmock into our dependencies.

third_party/boost/boost/type_traits/is_object.hpp

Index: third_party/boost/boost/type_traits/is_object.hpp
diff --git a/third_party/boost/boost/type_traits/is_object.hpp b/third_party/boost/boost/type_traits/is_object.hpp
new file mode 100644
index 0000000000000000000000000000000000000000..3decbf8d1997d298f06667b947e46dfa37cce02f
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+++ b/third_party/boost/boost/type_traits/is_object.hpp
@@ -0,0 +1,53 @@
+
+//  (C) Copyright Steve Cleary, Beman Dawes, Howard Hinnant & John Maddock 2000.
+//  Use, modification and distribution are subject to 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/libs/type_traits for most recent version including documentation.
+
+#ifndef BOOST_TT_IS_OBJECT_HPP_INCLUDED
+#define BOOST_TT_IS_OBJECT_HPP_INCLUDED
+
+#include <boost/type_traits/is_reference.hpp>
+#include <boost/type_traits/is_void.hpp>
+#include <boost/type_traits/is_function.hpp>
+#include <boost/type_traits/detail/ice_and.hpp>
+#include <boost/type_traits/detail/ice_not.hpp>
+#include <boost/config.hpp>
+
+// should be the last #include
+#include <boost/type_traits/detail/bool_trait_def.hpp>
+
+namespace boost {
+
+namespace detail {
+
+template <typename T>
+struct is_object_impl
+{
+#ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
+   BOOST_STATIC_CONSTANT(bool, value =
+      (::boost::type_traits::ice_and<
+         ::boost::type_traits::ice_not< ::boost::is_reference<T>::value>::value,
+         ::boost::type_traits::ice_not< ::boost::is_void<T>::value>::value,
+         ::boost::type_traits::ice_not< ::boost::is_function<T>::value>::value
+      >::value));
+#else
+   BOOST_STATIC_CONSTANT(bool, value =
+      (::boost::type_traits::ice_and<
+         ::boost::type_traits::ice_not< ::boost::is_reference<T>::value>::value,
+         ::boost::type_traits::ice_not< ::boost::is_void<T>::value>::value
+      >::value));
+#endif
+};
+
+} // namespace detail
+
+BOOST_TT_AUX_BOOL_TRAIT_DEF1(is_object,T,::boost::detail::is_object_impl<T>::value)
+
+} // namespace boost
+
+#include <boost/type_traits/detail/bool_trait_undef.hpp>
+
+#endif // BOOST_TT_IS_OBJECT_HPP_INCLUDED