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

ash/shell.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ash/shell.h"
 
 #include <algorithm>
 
 #include "ash/app_list/app_list.h"
 #include "ash/ash_switches.h"
 #include "ash/desktop_background/desktop_background_controller.h"
 #include "ash/desktop_background/desktop_background_resources.h"
 #include "ash/desktop_background/desktop_background_view.h"
 #include "ash/drag_drop/drag_drop_controller.h"
 #include "ash/focus_cycler.h"
 #include "ash/ime/input_method_event_filter.h"
 #include "ash/launcher/launcher.h"
 #include "ash/monitor/monitor_controller.h"
 #include "ash/monitor/multi_monitor_manager.h"
 #include "ash/screen_ash.h"
+#include "ash/shell_context_menu.h"
 #include "ash/shell_delegate.h"
 #include "ash/shell_factory.h"
 #include "ash/shell_window_ids.h"
 #include "ash/system/audio/tray_volume.h"
 #include "ash/system/bluetooth/tray_bluetooth.h"
 #include "ash/system/brightness/tray_brightness.h"
 #include "ash/system/date/tray_date.h"
 #include "ash/system/ime/tray_ime.h"
 #include "ash/system/network/tray_network.h"
 #include "ash/system/power/power_status_observer.h"
@@ skipping 215 matching lines @@
 
   virtual ~DummyUserWallpaperDelegate() {}
 
   virtual const int GetUserWallpaperIndex() OVERRIDE {
     return 0;
   }
 
   virtual void OpenSetWallpaperPage() OVERRIDE {
   }
 
+  virtual bool IsLoggedInAsGuest() OVERRIDE {
+    return false;
+  }
+
  private:
    DISALLOW_COPY_AND_ASSIGN(DummyUserWallpaperDelegate);
 };
 
 class DummySystemTrayDelegate : public SystemTrayDelegate {
  public:
   DummySystemTrayDelegate()
       : muted_(false),
         wifi_enabled_(true),
         cellular_enabled_(true),
@@ skipping 359 matching lines @@
   return GetInstance()->root_window_.get();
 }
 
 void Shell::Init() {
   aura::RootWindow* root_window = GetRootWindow();
   root_filter_ = new internal::RootWindowEventFilter(root_window);
 #if !defined(OS_MACOSX)
   nested_dispatcher_controller_.reset(new NestedDispatcherController);
   accelerator_controller_.reset(new AcceleratorController);
 #endif
+  shell_context_menu_.reset(new internal::ShellContextMenu);
   // Pass ownership of the filter to the root window.
   GetRootWindow()->SetEventFilter(root_filter_);
 
   // KeyRewriterEventFilter must be the first one.
   DCHECK(!GetRootWindowEventFilterCount());
   key_rewriter_filter_.reset(new internal::KeyRewriterEventFilter);
   AddRootWindowEventFilter(key_rewriter_filter_.get());
 
   // PartialScreenshotEventFilter must be the second one to capture key
   // events when the taking partial screenshot UI is there.
@@ skipping 151 matching lines @@
       GetRootWindow()->event_filter())->RemoveFilter(filter);
 }
 
 size_t Shell::GetRootWindowEventFilterCount() const {
   return static_cast<internal::RootWindowEventFilter*>(
       GetRootWindow()->event_filter())->GetFilterCount();
 }
 
 void Shell::ShowBackgroundMenu(views::Widget* widget,
                                const gfx::Point& location) {
-  if (workspace_controller_.get())
-    workspace_controller_->ShowMenu(widget, location);
+  if (shell_context_menu_.get())
+    shell_context_menu_->ShowMenu(widget, location);
 }
 
 void Shell::ToggleAppList() {
   if (!app_list_.get())
     app_list_.reset(new internal::AppList);
   app_list_->SetVisible(!app_list_->IsVisible());
 }
 
 bool Shell::GetAppListTargetVisibility() const {
   return app_list_.get() && app_list_->GetTargetVisibility();
@@ skipping 120 matching lines @@
   desktop_background_controller_->SetDesktopBackgroundImageMode(
       GetWallpaper(index), GetWallpaperInfo(index).layout);
 }
 
 void Shell::DisableWorkspaceGridLayout() {
   if (workspace_controller_.get())
     workspace_controller_->workspace_manager()->set_grid_size(0);
 }
 
 }  // namespace ash