[ios] Move applicationWillEnterForeground: to outside dispatch delay

There is no need to delay the applicationWillEnterForeground: as part
of the main intent logging.

Bug: 1161529
Change-Id: Ia5a6226e5ce2547050246410a2b4e3a1a2845e1d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2622851Reviewed-by: Eugene But <eugenebut@chromium.org>
Reviewed-by: Justin Cohen <justincohen@chromium.org>
Commit-Queue: Chris Lu <thegreenfrog@chromium.org>
Cr-Commit-Position: refs/heads/master@{#842207}

ios/chrome/app/main_application_delegate.mm

@@ -326,12 +326,10 @@ const int kMainIntentCheckDelay = 1;
             base::RecordAction(
                 base::UserMetricsAction("IOSOpenByMainIntent"));
           }
-
-          [_appState
-              applicationWillEnterForeground:UIApplication.sharedApplication
-                             metricsMediator:_metricsMediator
-                                memoryHelper:_memoryHelper];
         });
+    [_appState applicationWillEnterForeground:UIApplication.sharedApplication
+                              metricsMediator:_metricsMediator
+                                 memoryHelper:_memoryHelper];
   }
 }