Add gmock into our dependencies.

third_party/boost/boost/fusion/iterator/detail/advance.hpp

Index: third_party/boost/boost/fusion/iterator/detail/advance.hpp
diff --git a/third_party/boost/boost/fusion/iterator/detail/advance.hpp b/third_party/boost/boost/fusion/iterator/detail/advance.hpp
new file mode 100644
index 0000000000000000000000000000000000000000..900608fae17b8af4be278ab38ff08f228deb9730
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+++ b/third_party/boost/boost/fusion/iterator/detail/advance.hpp
@@ -0,0 +1,102 @@
+/*=============================================================================
+    Copyright (c) 2001-2006 Joel de Guzman
+
+    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)
+==============================================================================*/
+#if !defined(FUSION_ADVANCE_09172005_1149)
+#define FUSION_ADVANCE_09172005_1149
+
+#include <boost/mpl/int.hpp>
+#include <boost/mpl/if.hpp>
+#include <boost/mpl/eval_if.hpp>
+#include <boost/mpl/identity.hpp>
+#include <boost/fusion/iterator/next.hpp>
+#include <boost/fusion/iterator/prior.hpp>
+
+namespace boost { namespace fusion { namespace advance_detail
+{
+    // Default advance implementation, perform next(i)
+    // or prior(i) N times.
+
+    template <typename Iterator, int N>
+    struct forward;
+
+    template <typename Iterator, int N>
+    struct next_forward
+    {
+        typedef typename
+            forward<
+                typename result_of::next<Iterator>::type
+              , N-1
+            >::type
+        type;
+    };
+
+    template <typename Iterator, int N>
+    struct forward
+    {
+        typedef typename
+            mpl::eval_if_c<
+                (N == 0)
+              , mpl::identity<Iterator>
+              , next_forward<Iterator, N>
+            >::type
+        type;
+
+        static type const&
+        call(type const& i)
+        {
+            return i;
+        }
+
+        template <typename I>
+        static type
+        call(I const& i)
+        {
+            return call(fusion::next(i));
+        }
+    };
+
+    template <typename Iterator, int N>
+    struct backward;
+
+    template <typename Iterator, int N>
+    struct next_backward
+    {
+        typedef typename
+            backward<
+                typename result_of::prior<Iterator>::type
+              , N+1
+            >::type
+        type;
+    };
+
+    template <typename Iterator, int N>
+    struct backward
+    {
+        typedef typename
+            mpl::eval_if_c<
+                (N == 0)
+              , mpl::identity<Iterator>
+              , next_backward<Iterator, N>
+            >::type
+        type;
+
+        static type const&
+        call(type const& i)
+        {
+            return i;
+        }
+
+        template <typename I>
+        static type
+        call(I const& i)
+        {
+            return call(fusion::prior(i));
+        }
+    };
+
+}}}
+
+#endif