Cache network connecting bitmaps.

chrome/browser/chromeos/status/network_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_NETWORK_MENU_BUTTON_H_
 #define CHROME_BROWSER_CHROMEOS_STATUS_NETWORK_MENU_BUTTON_H_
 #pragma once
 
 #include <string>
 
@@ skipping 56 matching lines @@
 
  protected:
   // NetworkMenu implementation:
   virtual bool IsBrowserMode() const;
   virtual gfx::NativeWindow GetNativeWindow() const;
   virtual void OpenButtonOptions();
   virtual bool ShouldOpenButtonOptions() const;
 
  private:
   // Sets the icon and the badge.
-  void SetIconAndBadge(const SkBitmap& icon, const SkBitmap& badge);
+  void SetIconAndBadge(const SkBitmap* icon, const SkBitmap* badge);
   // Sets the icon only. Keep the previous badge.
-  void SetIconOnly(const SkBitmap& icon);
+  void SetIconOnly(const SkBitmap* icon);
   // Sets the badge only. Keep the previous icon.
-  void SetBadgeOnly(const SkBitmap& badge);
+  void SetBadgeOnly(const SkBitmap* badge);
   // Set the network icon based on the status of the |network|
   void SetNetworkIcon(NetworkLibrary* cros, const Network* network);
 
   // Called when the active network has possibly changed. This will remove
   // old network observer and add a network observer for the active network.
   void RefreshNetworkObserver(NetworkLibrary* cros);
 
   // The status area host,
   StatusAreaHost* host_;
 
   // The icon showing the network strength.
-  SkBitmap icon_;
+  const SkBitmap* icon_;
   // A badge icon displayed on top of the icon.
-  SkBitmap badge_;
+  const SkBitmap* badge_;
 
   // The throb animation that does the wifi connecting animation.
   ui::ThrobAnimation animation_connecting_;
 
   // The duration of the icon throbbing in milliseconds.
   static const int kThrobDuration;
 
   // If any network is currently active, this is the service path of the one
   // whose status is displayed in the network menu button.
   std::string active_network_;
 
   DISALLOW_COPY_AND_ASSIGN(NetworkMenuButton);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_STATUS_NETWORK_MENU_BUTTON_H_