Add explicit Isolate parameter to External::New

include/v8.h

Index: include/v8.h
diff --git a/include/v8.h b/include/v8.h
index 1f8cbfd83b0e0986336b9b0bcef6985d0659a4ef..5ab77eb79b5729b5d4c6d9455b09ba56bd0d34fb 100644
--- a/include/v8.h
+++ b/include/v8.h
@@ -3042,6 +3042,8 @@ class V8_EXPORT RegExp : public Object {
  */
 class V8_EXPORT External : public Value {
  public:
+  static Local<External> New(Isolate* isolate, void* value);
+  // Deprecated, do not use.
   static Local<External> New(void* value);
   V8_INLINE static External* Cast(Value* obj);
   void* Value() const;