Add gmock into our dependencies.

third_party/boost/boost/mpl/not.hpp

Index: third_party/boost/boost/mpl/not.hpp
diff --git a/third_party/boost/boost/mpl/not.hpp b/third_party/boost/boost/mpl/not.hpp
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index 0000000000000000000000000000000000000000..dc633ecae82931a0823c30fcf2e2e542776f03c4
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+++ b/third_party/boost/boost/mpl/not.hpp
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+
+#ifndef BOOST_MPL_NOT_HPP_INCLUDED
+#define BOOST_MPL_NOT_HPP_INCLUDED
+
+// Copyright Aleksey Gurtovoy 2000-2004
+//
+// Distributed under 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/mpl for documentation.
+
+// $Source$
+// $Date: 2004-09-02 11:41:37 -0400 (Thu, 02 Sep 2004) $
+// $Revision: 24874 $
+
+#include <boost/mpl/bool.hpp>
+#include <boost/mpl/aux_/nttp_decl.hpp>
+#include <boost/mpl/aux_/nested_type_wknd.hpp>
+#include <boost/mpl/aux_/na_spec.hpp>
+#include <boost/mpl/aux_/lambda_support.hpp>
+
+namespace boost { namespace mpl {
+
+namespace aux {
+
+template< BOOST_MPL_AUX_NTTP_DECL(long, C_) > // 'long' is intentional here
+struct not_impl
+    : bool_<!C_>
+{
+};
+
+} // namespace aux
+
+
+template<
+      typename BOOST_MPL_AUX_NA_PARAM(T)
+    >
+struct not_
+    : aux::not_impl<
+          BOOST_MPL_AUX_NESTED_TYPE_WKND(T)::value
+        >
+{
+    BOOST_MPL_AUX_LAMBDA_SUPPORT(1,not_,(T))
+};
+
+BOOST_MPL_AUX_NA_SPEC(1,not_)
+
+}}
+
+#endif // BOOST_MPL_NOT_HPP_INCLUDED