Chrome Frame turndown prompt.

chrome_frame/turndown_prompt/reshow_state.cc

Index: chrome_frame/turndown_prompt/reshow_state.cc
diff --git a/chrome_frame/turndown_prompt/reshow_state.cc b/chrome_frame/turndown_prompt/reshow_state.cc
new file mode 100644
index 0000000000000000000000000000000000000000..cf7e2f9cbbaefff5c59650a7a628639837c03085
--- /dev/null
+++ b/chrome_frame/turndown_prompt/reshow_state.cc
@@ -0,0 +1,39 @@
+// 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.
+
+#include "chrome_frame/turndown_prompt/reshow_state.h"
+
+#include "base/win/registry.h"
+#include "chrome_frame/utils.h"
+
+namespace {
+
+const wchar_t kTurndownPromptLastShown[] = L"TurndownPromptLastShown";
+
+}
+
+namespace turndown_prompt {
+
+ReshowState::ReshowState(const base::TimeDelta& reshow_delta)
+    : reshow_delta_(reshow_delta) {
+}
+
+ReshowState::~ReshowState() {
+}
+
+bool ReshowState::HasReshowDeltaExpired(const base::Time& current_time) const {
+  int64 last_shown = GetConfigInt64(0LL, kTurndownPromptLastShown);
+  if (!last_shown)
+    return true;
+
+  base::Time last_shown_time(base::Time::FromInternalValue(last_shown));
+
+  return current_time - last_shown_time >= reshow_delta_;
+}
+
+void ReshowState::MarkShown(const base::Time& last_shown_time) {
+  SetConfigInt64(kTurndownPromptLastShown, last_shown_time.ToInternalValue());
+}
+
+}  // namespace turndown_prompt