Chrome Frame turndown prompt.

chrome_frame/turndown_prompt/reshow_state.h

+// Copyright 2013 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_FRAME_TURNDOWN_PROMPT_RESHOW_STATE_H_
+#define CHROME_FRAME_TURNDOWN_PROMPT_RESHOW_STATE_H_
+
+#include "base/time.h"
+
+namespace turndown_prompt {
+
+class ReshowState {
+ public:
+  explicit ReshowState(const base::TimeDelta& reshow_delta);
+  ~ReshowState();
+
+  bool HasReshowDeltaExpired(const base::Time& current_time) const;
+  void MarkShown(const base::Time& last_shown_time);
+
+ private:
+  base::TimeDelta reshow_delta_;
+};
+
+}  // namespace turndown_prompt
+
+#endif  // CHROME_FRAME_TURNDOWN_PROMPT_RESHOW_STATE_H_