Remove deprecated wait_util methods.

ios/chrome/browser/ui/contextual_search/touch_to_search_permissions_mediator_unittest.mm

Index: ios/chrome/browser/ui/contextual_search/touch_to_search_permissions_mediator_unittest.mm
diff --git a/ios/chrome/browser/ui/contextual_search/touch_to_search_permissions_mediator_unittest.mm b/ios/chrome/browser/ui/contextual_search/touch_to_search_permissions_mediator_unittest.mm
index 0459922081f48deed50bd14d6e7351d4e9c3a9ce..46e192f78b699207290193159dc7f040914afb2f 100644
--- a/ios/chrome/browser/ui/contextual_search/touch_to_search_permissions_mediator_unittest.mm
+++ b/ios/chrome/browser/ui/contextual_search/touch_to_search_permissions_mediator_unittest.mm
@@ -363,7 +363,7 @@ TEST_F(TouchToSearchPermissionsMediatorTest, AudienceNotifications) {
       ^bool(void) {
         return [audience updated];
       },
-      nullptr, delay);
+      false, delay);
   EXPECT_TRUE([audience updated]);
   // Reset |audience|.
   [audience setUpdated:NO];
@@ -410,7 +410,7 @@ TEST_F(TouchToSearchPermissionsMediatorTest, AudienceNotifications) {
       ^bool(void) {
         return [audience updated];
       },
-      nullptr, delay);
+      false, delay);
   EXPECT_TRUE([audience updated]);
   // Reset |audience|.
   [audience setUpdated:NO];
@@ -443,7 +443,7 @@ TEST_F(TouchToSearchPermissionsMediatorTest, AudienceNotifications) {
       ^bool(void) {
         return [audience2 updated];
       },
-      nullptr, delay);
+      false, delay);
   EXPECT_TRUE([audience2 updated]);
 }