deps: use std::map in MSVC STL for EphemeronRememberedSet

Author: joyeecheung

common.gypi

@@ -38,7 +38,7 @@
 
     # Reset this number to 0 on major V8 upgrades.
     # Increment by one for each non-official patch applied to deps/v8.
-    'v8_embedder_string': '-node.5',
+    'v8_embedder_string': '-node.6',
 
     ##### V8 defaults for Node.js #####
 

deps/v8/src/heap/ephemeron-remembered-set.h

@@ -5,7 +5,11 @@
 #ifndef V8_HEAP_EPHEMERON_REMEMBERED_SET_H_
 #define V8_HEAP_EPHEMERON_REMEMBERED_SET_H_
 
+#if defined(_MSVC_STL_VERSION)
+#include <map>
+#else
 #include <unordered_map>
+#endif
 #include <unordered_set>
 
 #include "src/base/platform/mutex.h"
@@ -26,8 +30,13 @@ class EphemeronRememberedSet final {
                                            kEphemeronTableListSegmentSize>;
 
   using IndicesSet = std::unordered_set<int>;
+#if defined(_MSVC_STL_VERSION)
+  using TableMap = std::map<Tagged<EphemeronHashTable>, IndicesSet,
+                            Object::Comparer>;
+#else
   using TableMap = std::unordered_map<Tagged<EphemeronHashTable>, IndicesSet,
                                       Object::Hasher>;
+#endif
 
   void RecordEphemeronKeyWrite(Tagged<EphemeronHashTable> table,
                                Address key_slot);