[Payments] Changes to validation in the Credit Card editor

chrome/browser/ui/views/payments/shipping_address_editor_view_controller.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/shipping_address_editor_view_controller.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/callback.h"
 #include "base/memory/ptr_util.h"
@@ skipping 462 matching lines @@
   return ValidateValue(textfield->text(), nullptr);
 }
 
 bool ShippingAddressEditorViewController::ShippingAddressValidationDelegate::
     IsValidCombobox(views::Combobox* combobox) {
   return ValidateValue(combobox->GetTextForRow(combobox->selected_index()),
                        nullptr);
 }
 
 bool ShippingAddressEditorViewController::ShippingAddressValidationDelegate::
-    TextfieldValueChanged(views::Textfield* textfield) {
+    TextfieldValueChanged(views::Textfield* textfield, bool was_blurred) {
+  if (!was_blurred)
+    return true;
+
   base::string16 error_message;
   bool is_valid = ValidateValue(textfield->text(), &error_message);
   controller_->DisplayErrorMessageForField(field_.type, error_message);
   return is_valid;
 }
 
 bool ShippingAddressEditorViewController::ShippingAddressValidationDelegate::
     ComboboxValueChanged(views::Combobox* combobox) {
   base::string16 error_message;
   bool is_valid = ValidateValue(
@@ skipping 25 matching lines @@
     return true;
   }
   if (error_message && field_.required) {
     *error_message = l10n_util::GetStringUTF16(
         IDS_PAYMENTS_FIELD_REQUIRED_VALIDATION_MESSAGE);
   }
   return !field_.required;
 }
 
 }  // namespace payments