Give the implementation of v8::MicrotaskQueue::New

This adds the entrypoint to MicrotaskQueue, which used to miss the
implementation.

Bug: v8:8124
Change-Id: I114fb69d975ee75c86b19349ca76789e425ea910
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1505232Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Taiju Tsuiki <tzik@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60076}

include/v8.h

@@ -6779,7 +6779,7 @@ class V8_EXPORT MicrotaskQueue {
   /**
    * Creates an empty MicrotaskQueue instance.
    */
-  static std::unique_ptr<MicrotaskQueue> New();
+  static std::unique_ptr<MicrotaskQueue> New(Isolate* isolate);
 
   virtual ~MicrotaskQueue() = default;
 

src/api.cc

@@ -8929,6 +8929,11 @@ void v8::Isolate::LocaleConfigurationChangeNotification() {
 #endif  // V8_INTL_SUPPORT
 }
 
+// static
+std::unique_ptr<MicrotaskQueue> MicrotaskQueue::New(Isolate* isolate) {
+  return i::MicrotaskQueue::New(reinterpret_cast<i::Isolate*>(isolate));
+}
+
 MicrotasksScope::MicrotasksScope(Isolate* isolate, MicrotasksScope::Type type)
     : MicrotasksScope(
           isolate,