Add gmock into our dependencies.

third_party/boost/boost/type_traits/remove_const.hpp

Index: third_party/boost/boost/type_traits/remove_const.hpp
diff --git a/third_party/boost/boost/type_traits/remove_const.hpp b/third_party/boost/boost/type_traits/remove_const.hpp
new file mode 100644
index 0000000000000000000000000000000000000000..7e18d88b1a0ddba85328b3b32bdb8289d7b599db
--- /dev/null
+++ b/third_party/boost/boost/type_traits/remove_const.hpp
@@ -0,0 +1,78 @@
+
+//  (C) Copyright Dave Abrahams, 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_REMOVE_CONST_HPP_INCLUDED
+#define BOOST_TT_REMOVE_CONST_HPP_INCLUDED
+
+#include <boost/type_traits/is_volatile.hpp>
+#include <boost/type_traits/broken_compiler_spec.hpp>
+#include <boost/type_traits/detail/cv_traits_impl.hpp>
+#include <boost/config.hpp>
+#include <boost/detail/workaround.hpp>
+
+#include <cstddef>
+
+#if BOOST_WORKAROUND(BOOST_MSVC,<=1300)
+#include <boost/type_traits/msvc/remove_const.hpp>
+#endif
+
+// should be the last #include
+#include <boost/type_traits/detail/type_trait_def.hpp>
+
+namespace boost {
+
+#ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
+
+namespace detail {
+
+template <typename T, bool is_vol>
+struct remove_const_helper
+{
+    typedef T type;
+};
+
+template <typename T>
+struct remove_const_helper<T, true>
+{
+    typedef T volatile type;
+};
+
+
+template <typename T>
+struct remove_const_impl
+{
+    typedef typename remove_const_helper<
+          typename cv_traits_imp<T*>::unqualified_type
+        , ::boost::is_volatile<T>::value
+        >::type type;
+};
+
+} // namespace detail
+
+// * convert a type T to non-const type - remove_const<T>
+
+BOOST_TT_AUX_TYPE_TRAIT_DEF1(remove_const,T,typename boost::detail::remove_const_impl<T>::type)
+BOOST_TT_AUX_TYPE_TRAIT_PARTIAL_SPEC1_1(typename T,remove_const,T&,T&)
+#if !defined(BOOST_NO_ARRAY_TYPE_SPECIALIZATIONS)
+BOOST_TT_AUX_TYPE_TRAIT_PARTIAL_SPEC1_2(typename T,std::size_t N,remove_const,T const[N],T type[N])
+BOOST_TT_AUX_TYPE_TRAIT_PARTIAL_SPEC1_2(typename T,std::size_t N,remove_const,T const volatile[N],T volatile type[N])
+#endif
+
+#elif !BOOST_WORKAROUND(BOOST_MSVC,<=1300)
+
+BOOST_TT_AUX_TYPE_TRAIT_DEF1(remove_const,T,typename boost::detail::remove_const_impl<T>::type)
+
+#endif // BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
+
+} // namespace boost
+
+#include <boost/type_traits/detail/type_trait_undef.hpp>
+
+#endif // BOOST_TT_REMOVE_CONST_HPP_INCLUDED