Simplify promise event on throw handling.

test/mjsunit/es6/debug-promises/rethrow-in-try-finally.js

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Flags: --expose-debug-as debug --allow-natives-syntax
 
-// Test debug events when we only listen to uncaught exceptions and
+// Test debug events when we listen to all exceptions and
 // there is a catch handler for the exception thrown in a Promise.
-// We expect no debug event to be triggered.
+// We expect a normal Exception debug event to be triggered.
 
 Debug = debug.Debug;
 
+var events = [];
+
+function listener(event, exec_state, event_data, data) {
+  if (event == Debug.DebugEvent.PromiseEvent) events.push(event_data.status());
+}
+
+Debug.setListener(listener);
+
 var p = new Promise(function(resolve, reject) {
+  try {
+    throw new Error("reject");
+  } finally {
+    // Implicit rethrow.
+  }
   resolve();
 });
 
-var q = p.chain(
-  function() {
-    throw new Error("caught throw");
-  });
-
-q.catch(
-  function(e) {
-    assertEquals("caught throw", e.message);
-  });
-
-function listener(event, exec_state, event_data, data) {
-  try {
-    assertTrue(event != Debug.DebugEvent.Exception);
-  } catch (e) {
-    %AbortJS(e + "\n" + e.stack);
-  }
-}
-
-Debug.setBreakOnUncaughtException();
-Debug.setListener(listener);
+assertEquals([0 /* create */, -1 /* rethrown */], events);