Add gmock into our dependencies.

third_party/boost/boost/type_traits/msvc/typeof.hpp

Index: third_party/boost/boost/type_traits/msvc/typeof.hpp
diff --git a/third_party/boost/boost/type_traits/msvc/typeof.hpp b/third_party/boost/boost/type_traits/msvc/typeof.hpp
new file mode 100644
index 0000000000000000000000000000000000000000..ebb0e803f600bf8dd15f3241f823979a6944bbed
--- /dev/null
+++ b/third_party/boost/boost/type_traits/msvc/typeof.hpp
@@ -0,0 +1,50 @@
+// Copyright (C) 2004 Peder Holt
+// Use, modification and distribution is subject to the Boost Software
+// License, Version 1.0. (http://www.boost.org/LICENSE_1_0.txt)
+
+#ifndef BOOST_TYPETRAITS_MSVC_TYPEOF_HPP
+#define BOOST_TYPETRAITS_MSVC_TYPEOF_HPP
+
+#include <boost/config.hpp>
+#include <boost/detail/workaround.hpp>
+
+namespace boost { namespace detail {
+# if BOOST_WORKAROUND(BOOST_MSVC,==1300)
+        template<typename ID>
+        struct msvc_extract_type
+        {
+            template<bool>
+            struct id2type_impl;
+
+            typedef id2type_impl<true> id2type;
+        };
+
+        template<typename T, typename ID>
+        struct msvc_register_type : msvc_extract_type<ID>
+        {
+            template<>
+            struct id2type_impl<true>  //VC7.0 specific bugfeature
+            {
+                typedef T type;
+            };
+        };
+# else 
+        template<typename ID>
+        struct msvc_extract_type
+        {
+            struct id2type;
+        };
+
+        template<typename T, typename ID>
+        struct msvc_register_type : msvc_extract_type<ID>
+        {
+            typedef msvc_extract_type<ID> base_type;
+            struct base_type::id2type // This uses nice VC6.5 and VC7.1 bugfeature
+            {
+                typedef T type;
+            };
+        };
+# endif
+}}
+
+#endif //BOOST_TYPETRAITS_MSVC_TYPEOF_IMPL_HPP