[debug] use catch prediction flag for promise rejections.

test/mjsunit/es6/debug-promises/throw-with-throw-in-reject.js

Index: test/mjsunit/es6/debug-promises/throw-with-throw-in-reject.js
diff --git a/test/mjsunit/es6/debug-promises/throw-with-throw-in-reject.js b/test/mjsunit/es6/debug-promises/throw-with-throw-in-reject.js
index 5cf49f2faea10b4579092bbecf31d38b3fdd965e..e884045f10457ace580b711c259ca11f9f90b520 100644
--- a/test/mjsunit/es6/debug-promises/throw-with-throw-in-reject.js
+++ b/test/mjsunit/es6/debug-promises/throw-with-throw-in-reject.js
@@ -12,7 +12,7 @@
 
 Debug = debug.Debug;
 
-var expected_events = 2;
+var expected_events = 1;
 var log = [];
 
 var p = new Promise(function(resolve, reject) {
@@ -45,12 +45,10 @@ function listener(event, exec_state, event_data, data) {
     if (event == Debug.DebugEvent.Exception) {
       expected_events--;
       assertTrue(expected_events >= 0);
-      if (expected_events == 1) {
+      if (expected_events == 0) {
         assertEquals(["resolve", "construct", "end main",
                       "throw caught"], log);
         assertEquals("caught", event_data.exception().message);
-      } else if (expected_events == 0) {
-        assertEquals("reject", event_data.exception().message);

[Dan Ehrenberg, 2016/07/21 21:07:33]

Nice fix; this really isn't a rejection.

       } else {
         assertUnreachable();
       }