Mac: Make ScopedTypeRef require explicit constructors

ios/web/web_state/web_state_delegate_bridge_unittest.mm

Index: ios/web/web_state/web_state_delegate_bridge_unittest.mm
diff --git a/ios/web/web_state/web_state_delegate_bridge_unittest.mm b/ios/web/web_state/web_state_delegate_bridge_unittest.mm
index 9e10434d94991304974fee7fe72769c0b90f27db..da6da8379cfbf8ca656fcfc8f0bbff577d0b1107 100644
--- a/ios/web/web_state/web_state_delegate_bridge_unittest.mm
+++ b/ios/web/web_state/web_state_delegate_bridge_unittest.mm
@@ -53,7 +53,7 @@ void TearDown() override {
   context_menu_params.link_url = GURL("http://www.url.com");
   context_menu_params.src_url = GURL("http://www.url.com/image.jpeg");
   context_menu_params.referrer_policy = web::ReferrerPolicyOrigin;
-  context_menu_params.view = [UIView new];
+  context_menu_params.view.reset([UIView new]);
   context_menu_params.location = CGPointMake(5.0, 5.0);
   bridge_->HandleContextMenu(nullptr, context_menu_params);
   web::ContextMenuParams* result_params = [delegate_ contextMenuParams];