Reland of Add web compat workarounds for ES2015 RegExp semantics (patchset #3 id:40001 of https://c…

include/v8.h

Index: include/v8.h
diff --git a/include/v8.h b/include/v8.h
index 338abdabcfcec4ec6f86ea20ba4b94efacc97089..1e97776aab008f35d6cc23a5fbc468327f9d68d8 100644
--- a/include/v8.h
+++ b/include/v8.h
@@ -5411,6 +5411,8 @@ class V8_EXPORT Isolate {
     kSloppyMode = 8,
     kStrictMode = 9,
     kStrongMode = 10,
+    kRegExpPrototypeStickyGetter = 11,
+    kRegExpPrototypeToString = 12,
     kUseCounterFeatureCount  // This enum value must be last.
   };