MacViews: support Views credit card unmask prompt

chrome/browser/ui/cocoa/autofill/card_unmask_prompt_view_views.mm

+// Copyright 2016 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/browser_dialogs.h"
+#include "chrome/browser/ui/cocoa/autofill/card_unmask_prompt_view_bridge.h"
+#include "chrome/browser/ui/views/autofill/card_unmask_prompt_views.h"
+
+namespace autofill {
+
+CardUnmaskPromptView* CreateCardUnmaskPromptView(
+    CardUnmaskPromptController* controller,
+    content::WebContents* web_contents) {
+  if (chrome::ToolkitViewsWebUIDialogsEnabled())
+    return new CardUnmaskPromptViews(controller, web_contents);
+  return new CardUnmaskPromptViewBridge(controller, web_contents);
+}
+
+}