Remove deprecated v8::base::OS::nan_value().

src/types.cc

Index: src/types.cc
diff --git a/src/types.cc b/src/types.cc
index c7bd5cbfeca61d58c74eee3a93558fdc6c76408c..4f4b7fbcc27604920b3624dcd3c7a9194c0015bb 100644
--- a/src/types.cc
+++ b/src/types.cc
@@ -343,7 +343,7 @@ double TypeImpl<Config>::BitsetType::Min(bitset bits) {
     }
   }
   if (mz) return 0;
-  return base::OS::nan_value();
+  return std::numeric_limits<double>::quiet_NaN();
 }
 
 
@@ -363,7 +363,7 @@ double TypeImpl<Config>::BitsetType::Max(bitset bits) {
     }
   }
   if (mz) return 0;
-  return base::OS::nan_value();
+  return std::numeric_limits<double>::quiet_NaN();
 }