Introduce more debug events for promises.

test/mjsunit/es6/debug-promises-new-event.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
 
 Debug = debug.Debug;
 
 var exception = null;
 var new_promise;
 
 function listener(event, exec_state, event_data, data) {
   if (event != Debug.DebugEvent.PromiseEvent) return;
   try {
-    assertTrue(event_data.resolver().isFunction());
-    assertEquals(resolver, event_data.resolver().value());
-    assertTrue(event_data.resolver().resolved());
-    assertEquals("resolver", event_data.resolver().name());
-    assertTrue(event_data.resolver().source().indexOf("Token") > 0);
+    if (event_data instanceof debug.NewPromiseEvent) {

[aandrey, 2014/07/18 12:10:44]

if (!(event_data instanceof debug.NewPromiseEvent)) return;

[Alexandra Mikhaylova, 2014/07/22 10:45:36]

Done.

+      assertTrue(event_data.resolver().isFunction());
+      assertEquals(resolver, event_data.resolver().value());
+      assertTrue(event_data.resolver().resolved());
+      assertEquals("resolver", event_data.resolver().name());
+      assertTrue(event_data.resolver().source().indexOf("Token") > 0);
 
-    assertTrue(event_data.promise().isPromise());
-    new_promise = event_data.promise().value();
-    assertEquals("pending", event_data.promise().status());
+      assertTrue(event_data.promise().isPromise());
+      new_promise = event_data.promise().value();
+      assertEquals("pending", event_data.promise().status());
+    }
   } catch (e) {
     print(e + e.stack)
     exception = e;
   }
 }
 
 Debug.setListener(listener);
 
 function resolver(resolve, reject) {
   resolve();  // Token
 }
 
 var p = new Promise(resolver);
 assertEquals(new_promise, p);
 
 assertNull(exception);
 Debug.setListener(null);