Revert of Removing TODO for It2Me Confirmation Dialog

remoting/host/it2me/it2me_host.cc

Index: remoting/host/it2me/it2me_host.cc
diff --git a/remoting/host/it2me/it2me_host.cc b/remoting/host/it2me/it2me_host.cc
index 62c08a24d045f87ee14cae2d37c55a365fa5f8dc..e018c9be09db4289ada9c4f3eab99130766ef777 100644
--- a/remoting/host/it2me/it2me_host.cc
+++ b/remoting/host/it2me/it2me_host.cc
@@ -518,6 +518,12 @@
   std::unique_ptr<It2MeConfirmationDialog> confirmation_dialog =
       confirmation_dialog_factory_->Create();
 
+  // TODO(joedow): Remove this once confirmation dialog exists on all platforms.
+  if (!confirmation_dialog) {
+    result_callback.Run(ValidationResult::SUCCESS);
+    return;
+  }
+
   confirmation_dialog_proxy_.reset(new It2MeConfirmationDialogProxy(
       host_context_->ui_task_runner(), std::move(confirmation_dialog)));