Make use of the request stack in more places.

I think it makes sense to use RequestStack in more services, but I'm curious about the places we have it bleeding through to forms themselves.

1. +++ b/core/lib/Drupal/Core/Form/FormBase.php
   @@ -175,7 +175,7 @@ protected function getRequest() {
   +    $this->requestStack = $request;
   

   I think this needs to be $this->requestStack->push($request);

2. +++ b/core/modules/user/lib/Drupal/user/Form/UserMultipleCancelConfirm.php
   @@ -202,7 +202,7 @@ public function submitForm(array &$form, array &$form_state) {
   +          $admin_form->buildForm($admin_form_mock, $admin_form_state, $this->requestStack);
   
   +++ b/core/modules/views_ui/lib/Drupal/views_ui/ViewEditFormController.php
   @@ -33,7 +33,7 @@ class ViewEditFormController extends ViewFormControllerBase {
       * @var \Symfony\Component\HttpFoundation\Request
   
   @@ -45,7 +45,7 @@ class ViewEditFormController extends ViewFormControllerBase {
   +    $this->requestStack = $request;
   
   @@ -288,7 +288,7 @@ public function submit(array $form, array &$form_state) {
   +    $query = $this->requestStack->query;
   
   @@ -761,7 +761,7 @@ public function renderDisplayTop(ViewUI $view) {
   +    $query = $this->requestStack->query;
   

   I don't think any of these are right...

Rerolling the patch as per the latest D8 release.

It is a re-roll for this patch.

rerolled.

Sorry, this Rerolled for #1

request stack (all this) already exist in 8.1.x
+ here old code (for example ViewEditFormController alredy changed to ViewEditForm)
need to close it issue