[Payments] Have expiration date be on the same line in CC editor

chrome/browser/ui/views/payments/validating_combobox.cc

 // Copyright 2017 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/ui/views/payments/validating_combobox.h"
 
 #include <utility>
 
 #include "ui/base/models/combobox_model.h"
 
 namespace payments {
 
 ValidatingCombobox::ValidatingCombobox(
     std::unique_ptr<ui::ComboboxModel> model,
     std::unique_ptr<ValidationDelegate> delegate)
     : Combobox(std::move(model)), delegate_(std::move(delegate)) {
   // No need to remove observer on owned model.
   this->model()->AddObserver(this);
 }
 
 ValidatingCombobox::~ValidatingCombobox() {}
 
 void ValidatingCombobox::OnBlur() {
   Combobox::OnBlur();
 
-  // The first validation should be on a blur. The subsequent validations will
-  // occur when the content changes. Do not validate if the view is being
-  // removed.
-  if (!was_blurred_ && !being_removed_) {
-    was_blurred_ = true;
+  // Vvalidations will occur when the content changes. Do not validate if the

[anthonyvd, 2017/05/19 19:16:59]

Nit: Validations

[Mathieu, 2017/05/19 21:13:46]

Done.

+  // view is being removed.
+  if (!being_removed_) {
     Validate();
   }
 }
 
 void ValidatingCombobox::ViewHierarchyChanged(
     const ViewHierarchyChangedDetails& details) {
   if (details.child == this && !details.is_add)
     being_removed_ = true;
 }
 
 void ValidatingCombobox::OnContentsChanged() {
-  // Validation on every keystroke only happens if the field has been validated
-  // before as part of a blur.
-  if (!was_blurred_)
-    return;
-
   Validate();
 }
 
 void ValidatingCombobox::OnComboboxModelChanged(
     ui::ComboboxModel* unused_model) {
   ModelChanged();
   delegate_->ComboboxModelChanged(this);
 }
 
 void ValidatingCombobox::Validate() {
   // ValidateCombobox may have side-effects, such as displaying errors.
   SetInvalid(!delegate_->ValidateCombobox(this));
 }
 
 }  // namespace payments