[Aura] Refresh status area widget bounds on StatusAreaView layout

ui/aura_shell/desktop_layout_manager.h

Index: ui/aura_shell/desktop_layout_manager.h
diff --git a/ui/aura_shell/desktop_layout_manager.h b/ui/aura_shell/desktop_layout_manager.h
index 7af3039e4bf303cf539c81533bf7ca969d3d4b05..80efb19f809c636bf7b935592ab611da68bee409 100644
--- a/ui/aura_shell/desktop_layout_manager.h
+++ b/ui/aura_shell/desktop_layout_manager.h
@@ -23,8 +23,6 @@ class Widget;
 namespace aura_shell {
 namespace internal {
 
-class ShelfLayoutController;
-
 // A layout manager for the root window.
 // Resizes all of its immediate children to fill the bounds of the root window.
 class DesktopLayoutManager : public aura::LayoutManager {
@@ -32,8 +30,6 @@ class DesktopLayoutManager : public aura::LayoutManager {
   explicit DesktopLayoutManager(aura::Window* owner);
   virtual ~DesktopLayoutManager();
 
-  void set_shelf(ShelfLayoutController* shelf) { shelf_ = shelf; }
-
   void set_background_widget(views::Widget* background_widget) {
     background_widget_ = background_widget;
   }
@@ -52,8 +48,6 @@ class DesktopLayoutManager : public aura::LayoutManager {
 
   views::Widget* background_widget_;
 
-  ShelfLayoutController* shelf_;
-
   DISALLOW_COPY_AND_ASSIGN(DesktopLayoutManager);
 };