Added tooltips to stats bar items.

chrome/browser/chromeos/status/power_menu_button.h

 // Copyright (c) 2006-2008 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_CHROMEOS_STATUS_POWER_MENU_BUTTON_H_
 #define CHROME_BROWSER_CHROMEOS_STATUS_POWER_MENU_BUTTON_H_
 #pragma once
 
 #include "app/menus/menu_model.h"
 #include "chrome/browser/chromeos/cros/power_library.h"
 #include "chrome/browser/chromeos/status/status_area_button.h"
 #include "views/controls/menu/menu_2.h"
 #include "views/controls/menu/view_menu_delegate.h"
 
+namespace base {
+class TimeDelta;
+}
+
 class SkBitmap;
 
 namespace chromeos {
 
 // The power menu button in the status area.
 // This class will handle getting the power status and populating the menu.
 class PowerMenuButton : public StatusAreaButton,
                         public views::ViewMenuDelegate,
                         public menus::MenuModel,
                         public PowerLibrary::Observer {
@@ skipping 32 matching lines @@
   virtual void DrawPressed(gfx::Canvas* canvas);
   virtual void DrawIcon(gfx::Canvas* canvas);
 
  private:
   // views::ViewMenuDelegate implementation.
   virtual void RunMenu(views::View* source, const gfx::Point& pt);
 
   // This method will draw the |icon| in the appropriate place on the |canvas|.
   void DrawPowerIcon(gfx::Canvas* canvas, SkBitmap icon);
 
-  // Update the power icon depending on the power status.
-  void UpdateIcon();
+  // Update the power icon and menu label info depending on the power status.
+  void UpdateIconAndLabelInfo();
 
   // The number of power images.
   static const int kNumPowerImages;
 
   // The power menu.
   views::Menu2 power_menu_;
 
+  // Stored data gathered CrosLibrary::PowerLibrary.
+  bool battery_is_present_;
+  bool line_power_on_;
+  bool battery_fully_charged_;
+  double battery_percentage_;
+  base::TimeDelta battery_time_to_full_;
+  base::TimeDelta battery_time_to_empty_;
+
   // The currently showing icon bitmap id.
   int icon_id_;
 
   DISALLOW_COPY_AND_ASSIGN(PowerMenuButton);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_STATUS_POWER_MENU_BUTTON_H_