Adds a first-run balloon to the Windows notification center.

chrome/browser/ui/views/message_center/web_notification_tray.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_BROWSER_UI_VIEWS_MESSAGE_CENTER_WEB_NOTIFICATION_TRAY_H_
 #define CHROME_BROWSER_UI_VIEWS_MESSAGE_CENTER_WEB_NOTIFICATION_TRAY_H_
 
 #include "base/memory/weak_ptr.h"
 #include "chrome/browser/status_icons/status_icon_observer.h"
 #include "ui/base/models/simple_menu_model.h"
@@ skipping 44 matching lines @@
   // These are forwarded to WebNotificationTray by
   // NotificationBubbleWrapper classes since they don't have enough
   // context to provide the required data for TrayBubbleView::Delegate.
   gfx::Rect GetMessageCenterAnchor();
   gfx::Rect GetPopupAnchor();
   gfx::NativeView GetBubbleWindowContainer();
   views::TrayBubbleView::AnchorAlignment GetAnchorAlignment();
 
   // StatusIconObserver implementation.
   virtual void OnStatusIconClicked() OVERRIDE;
+#if defined(OS_WIN)
+  virtual void OnBalloonClicked() OVERRIDE;
+
+  // This shows a platform-specific balloon informing the user of the existence
+  // of the message center in the status tray area.
+  void DisplayFirstRunBalloon();
+#endif
 
   // Changes the icon and hovertext based on number of unread notifications.
   void UpdateStatusIcon();
   void HideBubbleWithView(const views::TrayBubbleView* bubble_view);
 
  private:
   FRIEND_TEST_ALL_PREFIXES(WebNotificationTrayTest, WebNotifications);
   FRIEND_TEST_ALL_PREFIXES(WebNotificationTrayTest, WebNotificationPopupBubble);
   FRIEND_TEST_ALL_PREFIXES(WebNotificationTrayTest,
                            ManyMessageCenterNotifications);
@@ skipping 17 matching lines @@
   gfx::Point mouse_click_point_;
 
   bool should_update_tray_content_;
 
   DISALLOW_COPY_AND_ASSIGN(WebNotificationTray);
 };
 
 }  // namespace message_center
 
 #endif  // CHROME_BROWSER_UI_VIEWS_MESSAGE_CENTER_WEB_NOTIFICATION_TRAY_H_