Add a regression test for the CardUnmaskPrompt.

chrome/browser/ui/autofill/card_unmask_prompt_view_tester.h

Index: chrome/browser/ui/autofill/card_unmask_prompt_view_tester.h
diff --git a/chrome/browser/ui/autofill/card_unmask_prompt_view_tester.h b/chrome/browser/ui/autofill/card_unmask_prompt_view_tester.h
new file mode 100644
index 0000000000000000000000000000000000000000..3e9522ac3faf9cd1a964f717566cb9d6fbb21b7f
--- /dev/null
+++ b/chrome/browser/ui/autofill/card_unmask_prompt_view_tester.h
@@ -0,0 +1,31 @@
+// Copyright 2015 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.
+
+#ifndef CHROME_BROWSER_UI_AUTOFILL_CARD_UNMASK_PROMPT_VIEW_TESTER_H_
+#define CHROME_BROWSER_UI_AUTOFILL_CARD_UNMASK_PROMPT_VIEW_TESTER_H_
+
+#include "base/memory/scoped_ptr.h"
+
+namespace content {
+class WebContents;
+}
+
+namespace autofill {
+
+class CardUnmaskPromptView;
+
+// Functionality that helps to test an AutofillCardUnmaskPromptView.
+class CardUnmaskPromptViewTester {
+ public:
+  // Gets a AutofillCardUnmaskPromptViewTester for |view|.
+  static scoped_ptr<CardUnmaskPromptViewTester> For(CardUnmaskPromptView* view);
+
+  virtual ~CardUnmaskPromptViewTester() {}
+
+  virtual void Close() = 0;
+};
+
+}  // namespace autofill
+
+#endif  // CHROME_BROWSER_UI_AUTOFILL_CARD_UNMASK_PROMPT_VIEW_TESTER_H_