Set TextInputType of CVC prompt to TEXT_INPUT_TYPE_NUMBER.

chrome/browser/ui/views/autofill/card_unmask_prompt_views.cc

 // Copyright 2014 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/autofill/card_unmask_prompt_views.h"
 
 #include "base/location.h"
 #include "base/single_thread_task_runner.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/threading/thread_task_runner_handle.h"
@@ skipping 423 matching lines @@
   if (!controller_->ShouldRequestExpirationDate()) {
     for (int i = 0; i < input_row_->child_count(); ++i)
       input_row_->child_at(i)->SetVisible(false);
   }
 
   cvc_input_ = new views::Textfield();
   cvc_input_->set_placeholder_text(
       l10n_util::GetStringUTF16(IDS_AUTOFILL_DIALOG_PLACEHOLDER_CVC));
   cvc_input_->set_controller(this);
   cvc_input_->set_default_width_in_chars(8);
+  cvc_input_->SetTextInputType(ui::TextInputType::TEXT_INPUT_TYPE_NUMBER);
   input_row_->AddChildView(cvc_input_);
 
   views::ImageView* cvc_image = new views::ImageView();
   cvc_image->SetImage(rb.GetImageSkiaNamed(controller_->GetCvcImageRid()));
   input_row_->AddChildView(cvc_image);
 
   views::View* temporary_error = new views::View();
   views::BoxLayout* temporary_error_layout =
       new views::BoxLayout(views::BoxLayout::kHorizontal, 0, 0, 4);
   temporary_error->SetLayoutManager(temporary_error_layout);
@@ skipping 71 matching lines @@
   views::View::OnPaint(canvas);
   canvas->Restore();
 }
 
 void CardUnmaskPromptViews::FadeOutView::SetAlpha(uint8_t alpha) {
   alpha_ = alpha;
   SchedulePaint();
 }
 
 }  // namespace autofill