Add gmock into our dependencies.

third_party/boost/boost/type_traits/is_empty.hpp

Index: third_party/boost/boost/type_traits/is_empty.hpp
diff --git a/third_party/boost/boost/type_traits/is_empty.hpp b/third_party/boost/boost/type_traits/is_empty.hpp
new file mode 100644
index 0000000000000000000000000000000000000000..c8eb7912da05177feed8c6ee340c4859d50921de
--- /dev/null
+++ b/third_party/boost/boost/type_traits/is_empty.hpp
@@ -0,0 +1,211 @@
+
+// (C) Copyright Steve Cleary, Beman Dawes, Howard Hinnant & John Maddock 2000.
+//  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).
+//
+//  See http://www.boost.org/libs/type_traits for most recent version including documentation.
+
+#ifndef BOOST_TT_IS_EMPTY_HPP_INCLUDED
+#define BOOST_TT_IS_EMPTY_HPP_INCLUDED
+
+#include <boost/type_traits/is_convertible.hpp>
+#include <boost/type_traits/detail/ice_or.hpp>
+#include <boost/type_traits/config.hpp>
+#include <boost/type_traits/intrinsics.hpp>
+
+#ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
+#   include <boost/type_traits/remove_cv.hpp>
+#   include <boost/type_traits/is_class.hpp>
+#   include <boost/type_traits/add_reference.hpp>
+#else
+#   include <boost/type_traits/is_reference.hpp>
+#   include <boost/type_traits/is_pointer.hpp>
+#   include <boost/type_traits/is_member_pointer.hpp>
+#   include <boost/type_traits/is_array.hpp>
+#   include <boost/type_traits/is_void.hpp>
+#   include <boost/type_traits/detail/ice_and.hpp>
+#   include <boost/type_traits/detail/ice_not.hpp>
+#endif
+
+// should be always the last #include directive
+#include <boost/type_traits/detail/bool_trait_def.hpp>
+
+namespace boost {
+
+namespace detail {
+
+#ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
+template <typename T>
+struct empty_helper_t1 : public T
+{
+    empty_helper_t1();  // hh compiler bug workaround
+    int i[256];
+private:
+   // suppress compiler warnings:
+   empty_helper_t1(const empty_helper_t1&);
+   empty_helper_t1& operator=(const empty_helper_t1&);
+};
+
+struct empty_helper_t2 { int i[256]; };
+
+#if !BOOST_WORKAROUND(__BORLANDC__, < 0x600)
+
+template <typename T, bool is_a_class = false>
+struct empty_helper
+{
+    BOOST_STATIC_CONSTANT(bool, value = false);
+};
+
+template <typename T>
+struct empty_helper<T, true>
+{
+    BOOST_STATIC_CONSTANT(
+        bool, value = (sizeof(empty_helper_t1<T>) == sizeof(empty_helper_t2))
+        );
+};
+
+template <typename T>
+struct is_empty_impl
+{
+    typedef typename remove_cv<T>::type cvt;
+    BOOST_STATIC_CONSTANT(
+        bool, value = (
+            ::boost::type_traits::ice_or<
+              ::boost::detail::empty_helper<cvt,::boost::is_class<T>::value>::value
+              , BOOST_IS_EMPTY(cvt)
+            >::value
+            ));
+};
+
+#else // __BORLANDC__
+
+template <typename T, bool is_a_class, bool convertible_to_int>
+struct empty_helper
+{
+    BOOST_STATIC_CONSTANT(bool, value = false);
+};
+
+template <typename T>
+struct empty_helper<T, true, false>
+{
+    BOOST_STATIC_CONSTANT(bool, value = (
+        sizeof(empty_helper_t1<T>) == sizeof(empty_helper_t2)
+        ));
+};
+
+template <typename T>
+struct is_empty_impl
+{
+   typedef typename remove_cv<T>::type cvt;
+   typedef typename add_reference<T>::type r_type;
+
+   BOOST_STATIC_CONSTANT(
+       bool, value = (
+           ::boost::type_traits::ice_or<
+              ::boost::detail::empty_helper<
+                  cvt
+                , ::boost::is_class<T>::value
+                , ::boost::is_convertible< r_type,int>::value
+              >::value
+              , BOOST_IS_EMPTY(cvt)
+           >::value));
+};
+
+#endif // __BORLANDC__
+
+#else // BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
+
+#ifdef BOOST_MSVC6_MEMBER_TEMPLATES
+
+template <typename T>
+struct empty_helper_t1 : public T
+{
+   empty_helper_t1();
+   int i[256];
+};
+
+struct empty_helper_t2 { int i[256]; };
+
+template <typename T>
+struct empty_helper_base
+{
+   enum { value = (sizeof(empty_helper_t1<T>) == sizeof(empty_helper_t2)) };
+};
+
+template <typename T>
+struct empty_helper_nonbase
+{
+   enum { value = false };
+};
+
+template <bool base>
+struct empty_helper_chooser
+{
+   template <typename T> struct result_
+   {
+      typedef empty_helper_nonbase<T> type;
+   };
+};
+
+template <>
+struct empty_helper_chooser<true>
+{
+   template <typename T> struct result_
+   {
+      typedef empty_helper_base<T> type;
+   };
+};
+
+template <typename T>
+struct is_empty_impl
+{
+   typedef ::boost::detail::empty_helper_chooser<
+      ::boost::type_traits::ice_and<
+         ::boost::type_traits::ice_not< ::boost::is_reference<T>::value >::value,
+         ::boost::type_traits::ice_not< ::boost::is_convertible<T,double>::value >::value,
+         ::boost::type_traits::ice_not< ::boost::is_pointer<T>::value >::value,
+         ::boost::type_traits::ice_not< ::boost::is_member_pointer<T>::value >::value,
+         ::boost::type_traits::ice_not< ::boost::is_array<T>::value >::value,
+         ::boost::type_traits::ice_not< ::boost::is_void<T>::value >::value,
+         ::boost::type_traits::ice_not<
+            ::boost::is_convertible<T,void const volatile*>::value
+            >::value
+      >::value > chooser;
+
+   typedef typename chooser::template result_<T> result;
+   typedef typename result::type eh_type;
+
+   BOOST_STATIC_CONSTANT(bool, value =
+      (::boost::type_traits::ice_or<eh_type::value, BOOST_IS_EMPTY(T)>::value));
+};
+
+#else
+
+template <typename T> struct is_empty_impl
+{
+    BOOST_STATIC_CONSTANT(bool, value = BOOST_IS_EMPTY(T));
+};
+
+#endif  // BOOST_MSVC6_MEMBER_TEMPLATES
+
+#endif  // BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
+
+// these help when the compiler has no partial specialization support:
+BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC1(is_empty,void,false)
+#ifndef BOOST_NO_CV_VOID_SPECIALIZATIONS
+BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC1(is_empty,void const,false)
+BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC1(is_empty,void volatile,false)
+BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC1(is_empty,void const volatile,false)
+#endif
+
+} // namespace detail
+
+BOOST_TT_AUX_BOOL_TRAIT_DEF1(is_empty,T,::boost::detail::is_empty_impl<T>::value)
+
+} // namespace boost
+
+#include <boost/type_traits/detail/bool_trait_undef.hpp>
+
+#endif // BOOST_TT_IS_EMPTY_HPP_INCLUDED
+