Fix use-after-free when switching profiles in the experimental app list.

ui/app_list/views/contents_switcher_view.h

Index: ui/app_list/views/contents_switcher_view.h
diff --git a/ui/app_list/views/contents_switcher_view.h b/ui/app_list/views/contents_switcher_view.h
index a4e23997a57e2aa61e2d26219e6038c36a70d291..338a36acea9bc62a0c14f442ce6a0f656ff98164 100644
--- a/ui/app_list/views/contents_switcher_view.h
+++ b/ui/app_list/views/contents_switcher_view.h
@@ -20,6 +20,8 @@ class ContentsSwitcherView : public views::View, public views::ButtonListener {
   explicit ContentsSwitcherView(ContentsView* contents_view);
   virtual ~ContentsSwitcherView();
 
+  ContentsView* contents_view() const { return contents_view_; }
+
  private:
   // Adds a switcher button using |resource_id| as the button's image and |tag|
   // as the button's id.