[inspector] async stacks for Promise.then calls...

src/js/async-await.js

Index: src/js/async-await.js
diff --git a/src/js/async-await.js b/src/js/async-await.js
index c7e90510d1c830d4e03a2b4d0bd150637a4773e6..87f3df540dc0d4186ab15574cb20adad85edebeb 100644
--- a/src/js/async-await.js
+++ b/src/js/async-await.js
@@ -133,23 +133,15 @@ function AsyncFunctionPromiseCreate() {
     %DebugPushPromise(promise);
     // Assign ID and create a recurring task to save stack for future
     // resumptions from await.
-    var id = %DebugNextMicrotaskId();
+    var id = %DebugNextAsyncTaskId(promise);
     SET_PRIVATE(promise, promiseAsyncStackIDSymbol, id);
-    %DebugAsyncTaskEvent("enqueueRecurring", id, "async function");
+    %DebugEnqueueRecurringAsyncTaskEvent(promise, "async function");
   }
   return promise;
 }
 
 function AsyncFunctionPromiseRelease(promise) {
   if (DEBUG_IS_ACTIVE) {
-    // Cancel
-    var id = GET_PRIVATE(promise, promiseAsyncStackIDSymbol);
-
-    // Don't send invalid events when catch prediction is turned on in
-    // the middle of some async operation.
-    if (!IS_UNDEFINED(id)) {
-      %DebugAsyncTaskEvent("cancel", id, "async function");
-    }
     // Pop the Promise under construction in an async function on
     // from catch prediction stack.
     %DebugPopPromise();