Add gmock into our dependencies.

third_party/boost/boost/type_traits/integral_constant.hpp

Index: third_party/boost/boost/type_traits/integral_constant.hpp
diff --git a/third_party/boost/boost/type_traits/integral_constant.hpp b/third_party/boost/boost/type_traits/integral_constant.hpp
new file mode 100644
index 0000000000000000000000000000000000000000..4ed1bb058fc80f3acf83d2d3bbff1b730fb44a6d
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+++ b/third_party/boost/boost/type_traits/integral_constant.hpp
@@ -0,0 +1,53 @@
+//  (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)
+
+#ifndef BOOST_TYPE_TRAITS_INTEGRAL_CONSTANT_HPP
+#define BOOST_TYPE_TRAITS_INTEGRAL_CONSTANT_HPP
+
+#include <boost/config.hpp>
+#include <boost/mpl/bool.hpp>
+#include <boost/mpl/integral_c.hpp>
+
+namespace boost{
+
+#if defined(BOOST_NO_DEPENDENT_TYPES_IN_TEMPLATE_VALUE_PARAMETERS) || defined(__BORLANDC__)
+template <class T, int val>
+#else
+template <class T, T val>
+#endif
+struct integral_constant : public mpl::integral_c<T, val>
+{
+   typedef integral_constant<T,val> type;
+};
+
+template<> struct integral_constant<bool,true> : public mpl::true_ 
+{
+#if BOOST_WORKAROUND(BOOST_MSVC, < 1300)
+# pragma warning(push)
+# pragma warning(disable:4097)
+   typedef mpl::true_ base_;
+   using base_::value;
+# pragma warning(pop)
+#endif
+   typedef integral_constant<bool,true> type;
+};
+template<> struct integral_constant<bool,false> : public mpl::false_ 
+{
+#if BOOST_WORKAROUND(BOOST_MSVC, < 1300)
+# pragma warning(push)
+# pragma warning(disable:4097)
+   typedef mpl::false_ base_;
+   using base_::value;
+# pragma warning(pop)
+#endif
+   typedef integral_constant<bool,false> type;
+};
+
+typedef integral_constant<bool,true> true_type;
+typedef integral_constant<bool,false> false_type;
+
+}
+
+#endif