Add gmock into our dependencies.

third_party/boost/boost/type_traits/has_trivial_destructor.hpp

Index: third_party/boost/boost/type_traits/has_trivial_destructor.hpp
diff --git a/third_party/boost/boost/type_traits/has_trivial_destructor.hpp b/third_party/boost/boost/type_traits/has_trivial_destructor.hpp
new file mode 100644
index 0000000000000000000000000000000000000000..f2a8ce681b1736bf3174d2de7e014a2b8ea5bb0c
--- /dev/null
+++ b/third_party/boost/boost/type_traits/has_trivial_destructor.hpp
@@ -0,0 +1,42 @@
+
+//  (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_HAS_TRIVIAL_DESTRUCTOR_HPP_INCLUDED
+#define BOOST_TT_HAS_TRIVIAL_DESTRUCTOR_HPP_INCLUDED
+
+#include <boost/type_traits/config.hpp>
+#include <boost/type_traits/intrinsics.hpp>
+#include <boost/type_traits/is_pod.hpp>
+#include <boost/type_traits/detail/ice_or.hpp>
+
+// should be the last #include
+#include <boost/type_traits/detail/bool_trait_def.hpp>
+
+namespace boost {
+
+namespace detail {
+
+template <typename T>
+struct has_trivial_dtor_impl
+{
+   BOOST_STATIC_CONSTANT(bool, value =
+      (::boost::type_traits::ice_or<
+         ::boost::is_pod<T>::value,
+         BOOST_HAS_TRIVIAL_DESTRUCTOR(T)
+      >::value));
+};
+
+} // namespace detail
+
+BOOST_TT_AUX_BOOL_TRAIT_DEF1(has_trivial_destructor,T,::boost::detail::has_trivial_dtor_impl<T>::value)
+
+} // namespace boost
+
+#include <boost/type_traits/detail/bool_trait_undef.hpp>
+
+#endif // BOOST_TT_HAS_TRIVIAL_DESTRUCTOR_HPP_INCLUDED