Add gmock into our dependencies.

third_party/boost/boost/fusion/container/vector/detail/distance_impl.hpp

Index: third_party/boost/boost/fusion/container/vector/detail/distance_impl.hpp
diff --git a/third_party/boost/boost/fusion/container/vector/detail/distance_impl.hpp b/third_party/boost/boost/fusion/container/vector/detail/distance_impl.hpp
new file mode 100644
index 0000000000000000000000000000000000000000..9664d5c2da24d5a8b312b62885cec587a384f94d
--- /dev/null
+++ b/third_party/boost/boost/fusion/container/vector/detail/distance_impl.hpp
@@ -0,0 +1,41 @@
+/*=============================================================================
+    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_DISTANCE_IMPL_09172005_0751)
+#define FUSION_DISTANCE_IMPL_09172005_0751
+
+#include <boost/mpl/minus.hpp>
+
+namespace boost { namespace fusion
+{
+    struct vector_iterator_tag;
+
+    namespace extension
+    {
+        template <typename Tag>
+        struct distance_impl;
+
+        template <>
+        struct distance_impl<vector_iterator_tag>
+        {
+            template <typename First, typename Last>
+            struct apply : mpl::minus<typename Last::index, typename First::index>
+            {    
+                static typename mpl::minus<
+                    typename Last::index, typename First::index>::type
+                call(First const&, Last const&)
+                {
+                    typedef typename mpl::minus<
+                        typename Last::index, typename First::index>::type 
+                    result;
+                    return result();
+                }
+            };
+        };
+    }
+}}
+
+#endif