[promises] Avoid creating resolving functions in Promise.resolve

src/js/promise.js

Index: src/js/promise.js
diff --git a/src/js/promise.js b/src/js/promise.js
index e1f35fd17d0a2cba20c3ef4b69a2baf2ed76cdc4..466912d5eb6eaba98a8e4d9fe41c90ead55c4667 100644
--- a/src/js/promise.js
+++ b/src/js/promise.js
@@ -449,6 +449,13 @@ function PromiseResolve(x) {
   }
   if (IsPromise(x) && x.constructor === this) return x;
 
+  // Avoid creating resolving functions.
+  if (this === GlobalPromise) {
+    var promise = PromiseInit(new GlobalPromise(promiseRawSymbol));
+    var resolveResult = ResolvePromise(promise, x);
+    return promise;
+  }
+
   var promiseCapability = NewPromiseCapability(this);
   var resolveResult = %_Call(promiseCapability.resolve, UNDEFINED, x);
   return promiseCapability.promise;