Disable CallLoadURLWithParamsDuringSessionRestore on iOS 13.1.

Bug: 1046576
TBR: gambard@chromium.org
Change-Id: Ia71daef408c0c6d102dde35b592be89f510ce635
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2026467
Commit-Queue: Eugene But <eugenebut@chromium.org>
Reviewed-by: Eugene But <eugenebut@chromium.org>
Cr-Commit-Position: refs/heads/master@{#736156}

ios/web/web_state/web_state_unittest.mm

@@ -434,6 +434,11 @@ TEST_F(WebStateTest, CallStopDuringSessionRestore) {
 // Verifies that calling NavigationManager::LoadURLWithParams() does not stop
 // the session restoration and eventually loads the requested URL.
 TEST_F(WebStateTest, CallLoadURLWithParamsDuringSessionRestore) {
+  if (@available(iOS 13.1, *)) {
+    // TODO(crbug.com/1046576): this test is flaky on iOS 13.1.
+    return;
+  }
+
   // Create session storage with large number of items.
   const int kItemCount = 10;
   NSMutableArray<CRWNavigationItemStorage*>* item_storages =