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diff --git a/content/browser/web_contents/popup_menu_helper_mac.h b/content/browser/web_contents/popup_menu_helper_mac.h
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+++ b/content/browser/web_contents/popup_menu_helper_mac.h
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+// Copyright (c) 2012 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 CONTENT_BROWSER_WEB_CONTENTS_POPUP_MENU_HELPER_MAC_H_
+#define CONTENT_BROWSER_WEB_CONTENTS_POPUP_MENU_HELPER_MAC_H_
+
+#include <vector>
+
+#include "base/compiler_specific.h"
+#include "content/public/browser/notification_observer.h"
+#include "content/public/browser/notification_registrar.h"
+#include "ui/gfx/rect.h"
+
+struct WebMenuItem;
+
+namespace content {
+class RenderViewHost;
+class RenderViewHostImpl;
+}
+
+class PopupMenuHelper : public content::NotificationObserver {
+ public:
+  // Creates a PopupMenuHelper that will notify |render_view_host| when a user
+  // selects or cancels the popup.
+  explicit PopupMenuHelper(content::RenderViewHost* render_view_host);
+
+  // Shows the popup menu and notifies the RenderViewHost of the selection/
+  // cancel.
+  // This call is blocking.
+  void ShowPopupMenu(const gfx::Rect& bounds,
+                     int item_height,
+                     double item_font_size,
+                     int selected_item,
+                     const std::vector<WebMenuItem>& items,
+                     bool right_aligned);
+
+ private:
+  // content::NotificationObserver implementation:
+  virtual void Observe(int type,
+                       const content::NotificationSource& source,
+                       const content::NotificationDetails& details) OVERRIDE;
+
+  content::NotificationRegistrar notification_registrar_;
+
+  content::RenderViewHostImpl* render_view_host_;
+
+  DISALLOW_COPY_AND_ASSIGN(PopupMenuHelper);
+};
+
+#endif  // CONTENT_BROWSER_WEB_CONTENTS_POPUP_MENU_HELPER_MAC_H_