Add gmock into our dependencies.

third_party/boost/boost/type_traits/extent.hpp

Index: third_party/boost/boost/type_traits/extent.hpp
diff --git a/third_party/boost/boost/type_traits/extent.hpp b/third_party/boost/boost/type_traits/extent.hpp
new file mode 100644
index 0000000000000000000000000000000000000000..196d826eb854a264906a5d6a5f0a53c1358bc6f5
--- /dev/null
+++ b/third_party/boost/boost/type_traits/extent.hpp
@@ -0,0 +1,134 @@
+
+//  (C) Copyright John Maddock 2005.  
+//  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_EXTENT_HPP_INCLUDED
+#define BOOST_TT_EXTENT_HPP_INCLUDED
+
+// should be the last #include
+#include <boost/type_traits/detail/size_t_trait_def.hpp>
+
+namespace boost {
+
+namespace detail{
+
+template <class T, std::size_t N>
+struct extent_imp
+{
+   BOOST_STATIC_CONSTANT(std::size_t, value = 0);
+};
+#if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) && !defined(BOOST_NO_ARRAY_TYPE_SPECIALIZATIONS)
+template <class T, std::size_t R, std::size_t N>
+struct extent_imp<T[R], N>
+{
+   BOOST_STATIC_CONSTANT(std::size_t, value = (::boost::detail::extent_imp<T, N-1>::value));
+};
+
+template <class T, std::size_t R, std::size_t N>
+struct extent_imp<T const[R], N>
+{
+   BOOST_STATIC_CONSTANT(std::size_t, value = (::boost::detail::extent_imp<T, N-1>::value));
+};
+
+template <class T, std::size_t R, std::size_t N>
+struct extent_imp<T volatile[R], N>
+{
+   BOOST_STATIC_CONSTANT(std::size_t, value = (::boost::detail::extent_imp<T, N-1>::value));
+};
+
+template <class T, std::size_t R, std::size_t N>
+struct extent_imp<T const volatile[R], N>
+{
+   BOOST_STATIC_CONSTANT(std::size_t, value = (::boost::detail::extent_imp<T, N-1>::value));
+};
+
+template <class T, std::size_t R>
+struct extent_imp<T[R],0>
+{
+   BOOST_STATIC_CONSTANT(std::size_t, value = R);
+};
+
+template <class T, std::size_t R>
+struct extent_imp<T const[R], 0>
+{
+   BOOST_STATIC_CONSTANT(std::size_t, value = R);
+};
+
+template <class T, std::size_t R>
+struct extent_imp<T volatile[R], 0>
+{
+   BOOST_STATIC_CONSTANT(std::size_t, value = R);
+};
+
+template <class T, std::size_t R>
+struct extent_imp<T const volatile[R], 0>
+{
+   BOOST_STATIC_CONSTANT(std::size_t, value = R);
+};
+
+#if !BOOST_WORKAROUND(__BORLANDC__, < 0x600) && !defined(__IBMCPP__) &&  !BOOST_WORKAROUND(__DMC__, BOOST_TESTED_AT(0x840)) && !defined(__MWERKS__)
+template <class T, std::size_t N>
+struct extent_imp<T[], N>
+{
+   BOOST_STATIC_CONSTANT(std::size_t, value = (::boost::detail::extent_imp<T, N-1>::value));
+};
+template <class T, std::size_t N>
+struct extent_imp<T const[], N>
+{
+   BOOST_STATIC_CONSTANT(std::size_t, value = (::boost::detail::extent_imp<T, N-1>::value));
+};
+template <class T, std::size_t N>
+struct extent_imp<T volatile[], N>
+{
+   BOOST_STATIC_CONSTANT(std::size_t, value = (::boost::detail::extent_imp<T, N-1>::value));
+};
+template <class T, std::size_t N>
+struct extent_imp<T const volatile[], N>
+{
+   BOOST_STATIC_CONSTANT(std::size_t, value = (::boost::detail::extent_imp<T, N-1>::value));
+};
+template <class T>
+struct extent_imp<T[], 0>
+{
+   BOOST_STATIC_CONSTANT(std::size_t, value = 0);
+};
+template <class T>
+struct extent_imp<T const[], 0>
+{
+   BOOST_STATIC_CONSTANT(std::size_t, value = 0);
+};
+template <class T>
+struct extent_imp<T volatile[], 0>
+{
+   BOOST_STATIC_CONSTANT(std::size_t, value = 0);
+};
+template <class T>
+struct extent_imp<T const volatile[], 0>
+{
+   BOOST_STATIC_CONSTANT(std::size_t, value = 0);
+};
+#endif
+#endif
+}
+
+template <class T, std::size_t N = 0>
+struct extent
+   : public ::boost::integral_constant<std::size_t, ::boost::detail::extent_imp<T,N>::value>
+{
+#if BOOST_WORKAROUND(BOOST_MSVC, < 1300) 
+   typedef ::boost::integral_constant<std::size_t, ::boost::detail::extent_imp<T,N>::value> base_; 
+   using base_::value;
+#endif
+    BOOST_MPL_AUX_LAMBDA_SUPPORT(1,extent,(T))
+};
+
+} // namespace boost
+
+#include <boost/type_traits/detail/size_t_trait_undef.hpp>
+
+#endif // BOOST_TT_IS_MEMBER_FUNCTION_POINTER_HPP_INCLUDED