Rebase the MessageBubble on the new views bubble.

chrome/browser/chromeos/status/network_menu_button.h

Index: chrome/browser/chromeos/status/network_menu_button.h
diff --git a/chrome/browser/chromeos/status/network_menu_button.h b/chrome/browser/chromeos/status/network_menu_button.h
index 05e5c9ed7d5ff83773e9a7e535168b60a57d860b..2dc3c52edb511f277213725c34b884746b1eed0e 100644
--- a/chrome/browser/chromeos/status/network_menu_button.h
+++ b/chrome/browser/chromeos/status/network_menu_button.h
@@ -54,7 +54,8 @@ class NetworkMenuButton : public StatusAreaButton,
                           public NetworkLibrary::NetworkManagerObserver,
                           public NetworkLibrary::NetworkObserver,
                           public NetworkLibrary::CellularDataPlanObserver,
-                          public MessageBubbleDelegate {
+                          public views::Widget::Observer,
+                          public MessageBubbleLinkListener {
  public:
   explicit NetworkMenuButton(StatusAreaButton::Delegate* delegate,
                              StatusAreaViewChromeos::ScreenMode screen_mode);
@@ -91,10 +92,10 @@ class NetworkMenuButton : public StatusAreaButton,
   // views::ViewMenuDelegate implementation.
   virtual void RunMenu(views::View* source, const gfx::Point& pt) OVERRIDE;
 
-  // MessageBubbleDelegate implementation:
-  virtual void BubbleClosing(Bubble* bubble, bool closed_by_escape) OVERRIDE;
-  virtual bool CloseOnEscape() OVERRIDE;
-  virtual bool FadeInOnShow() OVERRIDE;
+  // views::Widget::Observer implementation:
+  virtual void OnWidgetClosing(views::Widget* widget) OVERRIDE;
+
+  // MessageBubbleLinkListener implementation:
   virtual void OnLinkActivated(size_t index) OVERRIDE;
 
  private: