Add gmock into our dependencies.

third_party/boost/boost/config/stdlib/libstdcpp3.hpp

Index: third_party/boost/boost/config/stdlib/libstdcpp3.hpp
diff --git a/third_party/boost/boost/config/stdlib/libstdcpp3.hpp b/third_party/boost/boost/config/stdlib/libstdcpp3.hpp
new file mode 100644
index 0000000000000000000000000000000000000000..a619e3ebaacdec77bef1fa44363745ee0db646e9
--- /dev/null
+++ b/third_party/boost/boost/config/stdlib/libstdcpp3.hpp
@@ -0,0 +1,78 @@
+//  (C) Copyright John Maddock 2001.
+//  (C) Copyright Jens Maurer 2001.
+//  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 for most recent version.
+
+//  config for libstdc++ v3
+//  not much to go in here:
+
+#ifdef __GLIBCXX__
+#define BOOST_STDLIB "GNU libstdc++ version " BOOST_STRINGIZE(__GLIBCXX__)
+#else
+#define BOOST_STDLIB "GNU libstdc++ version " BOOST_STRINGIZE(__GLIBCPP__)
+#endif
+
+#if !defined(_GLIBCPP_USE_WCHAR_T) && !defined(_GLIBCXX_USE_WCHAR_T)
+#  define BOOST_NO_CWCHAR
+#  define BOOST_NO_CWCTYPE
+#  define BOOST_NO_STD_WSTRING
+#  define BOOST_NO_STD_WSTREAMBUF
+#endif
+
+#if defined(__osf__) && !defined(_REENTRANT) \
+  && ( defined(_GLIBCXX_HAVE_GTHR_DEFAULT) || defined(_GLIBCPP_HAVE_GTHR_DEFAULT) )
+// GCC 3 on Tru64 forces the definition of _REENTRANT when any std lib header
+// file is included, therefore for consistency we define it here as well.
+#  define _REENTRANT
+#endif
+
+#ifdef __GLIBCXX__ // gcc 3.4 and greater:
+#  if defined(_GLIBCXX_HAVE_GTHR_DEFAULT) \
+        || defined(_GLIBCXX__PTHREADS)
+      //
+      // If the std lib has thread support turned on, then turn it on in Boost
+      // as well.  We do this because some gcc-3.4 std lib headers define _REENTANT
+      // while others do not...
+      //
+#     define BOOST_HAS_THREADS
+#  else
+#     define BOOST_DISABLE_THREADS
+#  endif
+#elif defined(__GLIBCPP__) \
+        && !defined(_GLIBCPP_HAVE_GTHR_DEFAULT) \
+        && !defined(_GLIBCPP__PTHREADS)
+   // disable thread support if the std lib was built single threaded:
+#  define BOOST_DISABLE_THREADS
+#endif
+
+#if (defined(linux) || defined(__linux) || defined(__linux__)) && defined(__arm__) && defined(_GLIBCPP_HAVE_GTHR_DEFAULT)
+// linux on arm apparently doesn't define _REENTRANT
+// so just turn on threading support whenever the std lib is thread safe:
+#  define BOOST_HAS_THREADS
+#endif
+
+
+#if !defined(_GLIBCPP_USE_LONG_LONG) \
+    && !defined(_GLIBCXX_USE_LONG_LONG)\
+    && defined(BOOST_HAS_LONG_LONG)
+// May have been set by compiler/*.hpp, but "long long" without library
+// support is useless.
+#  undef BOOST_HAS_LONG_LONG
+#endif
+
+#if defined(__GLIBCXX__) || (defined(__GLIBCPP__) && __GLIBCPP__>=20020514) // GCC >= 3.1.0
+#  define BOOST_STD_EXTENSION_NAMESPACE __gnu_cxx
+#  define BOOST_HAS_SLIST
+#  define BOOST_HAS_HASH
+#  define BOOST_SLIST_HEADER <ext/slist>
+# if !defined(__GNUC__) || __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 3)
+#   define BOOST_HASH_SET_HEADER <ext/hash_set>
+#   define BOOST_HASH_MAP_HEADER <ext/hash_map>
+# else
+#   define BOOST_HASH_SET_HEADER <backward/hash_set>
+#   define BOOST_HASH_MAP_HEADER <backward/hash_map>
+# endif
+#endif