Make sure sideload wipeout doesn't interfere with the tests.

chrome/browser/ui/views/toolbar_view.h

Index: chrome/browser/ui/views/toolbar_view.h
===================================================================
--- chrome/browser/ui/views/toolbar_view.h	(revision 163351)
+++ chrome/browser/ui/views/toolbar_view.h	(working copy)
@@ -47,7 +47,8 @@
                     public chrome::search::SearchModelObserver,
                     public content::NotificationObserver,
                     public CommandObserver,
-                    public views::ButtonListener {
+                    public views::ButtonListener,
+                    public views::WidgetObserver {
  public:
   // The view class name.
   static const char kViewClassName[];
@@ -136,6 +137,10 @@
   virtual void ButtonPressed(views::Button* sender,
                              const ui::Event& event) OVERRIDE;
 
+  // Overridden from views::WidgetObserver:
+  virtual void OnWidgetVisibilityChanged(views::Widget* widget,
+                                         bool visible) OVERRIDE;
+
   // Overridden from content::NotificationObserver:
   virtual void Observe(int type,
                        const content::NotificationSource& source,