Remove "set wallpaper..." option in system context menu when guest logged in

ash/wm/workspace_controller.h

Index: ash/wm/workspace_controller.h
diff --git a/ash/wm/workspace_controller.h b/ash/wm/workspace_controller.h
index b1c1f24746c9420a2e8667b1f1398cb0bf807dd1..b95ca21dd441c40a5e46f8e7c606bf35a00c0207 100644
--- a/ash/wm/workspace_controller.h
+++ b/ash/wm/workspace_controller.h
@@ -10,22 +10,11 @@
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "ui/aura/window_observer.h"
-#include "ui/base/models/simple_menu_model.h"
 
 namespace aura {
 class Window;
 }
 
-namespace gfx {
-class Point;
-class Size;
-}
-
-namespace views {
-class MenuRunner;
-class Widget;
-}
-
 namespace ash {
 namespace internal {
 
@@ -38,8 +27,7 @@ class WorkspaceManager;
 // various workspace pieces: WorkspaceManager, WorkspaceLayoutManager and
 // WorkspaceEventFilter.
 class ASH_EXPORT WorkspaceController :
-      public aura::WindowObserver,
-      public ui::SimpleMenuModel::Delegate {
+      public aura::WindowObserver {
  public:
   explicit WorkspaceController(aura::Window* viewport);
   virtual ~WorkspaceController();
@@ -51,9 +39,6 @@ class ASH_EXPORT WorkspaceController :
     return workspace_manager_.get();
   }
 
-  // Shows the menu allowing you to configure various aspects of workspaces.
-  void ShowMenu(views::Widget* widget, const gfx::Point& location);
-
   // Sets the size of the grid.
   void SetGridSize(int grid_size);
 
@@ -62,21 +47,9 @@ class ASH_EXPORT WorkspaceController :
                                        const void* key,
                                        intptr_t old) OVERRIDE;
 
-  // ui::SimpleMenuModel::Delegate overrides:
-  virtual bool IsCommandIdChecked(int command_id) const OVERRIDE;
-  virtual bool IsCommandIdEnabled(int command_id) const OVERRIDE;
-  virtual void ExecuteCommand(int command_id) OVERRIDE;
-  virtual bool GetAcceleratorForCommandId(
-      int command_id,
-      ui::Accelerator* accelerator) OVERRIDE;
-
  private:
   friend class WorkspaceControllerTestHelper;
 
-  enum MenuItem {
-    MENU_CHANGE_WALLPAPER,
-  };
-
   aura::Window* viewport_;
 
   scoped_ptr<WorkspaceManager> workspace_manager_;
@@ -87,10 +60,6 @@ class ASH_EXPORT WorkspaceController :
   // Owned by |viewport_|.
   WorkspaceEventFilter* event_filter_;
 
-#if !defined(OS_MACOSX)
-  scoped_ptr<views::MenuRunner> menu_runner_;
-#endif
-
   DISALLOW_COPY_AND_ASSIGN(WorkspaceController);
 };