Fix compile with Aura/Mac ash_shell and workspace controller

ash/wm/workspace_controller.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/wm/workspace_controller.h"
 
 #include "ash/shell.h"
 #include "ash/wm/window_util.h"
 #include "ash/wm/workspace/workspace_event_filter.h"
 #include "ash/wm/workspace/workspace_layout_manager.h"
@@ skipping 35 matching lines @@
   aura::RootWindow::GetInstance()->RemoveObserver(this);
   aura::RootWindow::GetInstance()->RemoveRootWindowObserver(this);
 }
 
 void WorkspaceController::ToggleOverview() {
   workspace_manager_->SetOverview(!workspace_manager_->is_overview());
 }
 
 void WorkspaceController::ShowMenu(views::Widget* widget,
                                    const gfx::Point& location) {
+#if !defined(OS_MACOSX)
   ui::SimpleMenuModel menu_model(this);
   // This is just for testing and will be ripped out before we ship, so none of
   // the strings are localized.
   menu_model.AddCheckItem(MENU_SNAP_TO_GRID,
                           ASCIIToUTF16("Snap to grid"));
   menu_model.AddCheckItem(MENU_OPEN_MAXIMIZED,
                           ASCIIToUTF16("Maximize new windows"));
   views::MenuModelAdapter menu_model_adapter(&menu_model);
   menu_runner_.reset(new views::MenuRunner(menu_model_adapter.CreateMenu()));
   if (menu_runner_->RunMenuAt(
           widget, NULL, gfx::Rect(location, gfx::Size()),
           views::MenuItemView::TOPRIGHT, views::MenuRunner::HAS_MNEMONICS) ==
       views::MenuRunner::MENU_DELETED)
     return;
+#endif  // !defined(OS_MACOSX)
 }
 
 void WorkspaceController::OnRootWindowResized(const gfx::Size& new_size) {
   workspace_manager_->SetWorkspaceSize(new_size);
 }
 
 void WorkspaceController::OnWindowPropertyChanged(aura::Window* window,
                                                   const char* key,
                                                   void* old) {
   if (key == aura::client::kRootWindowActiveWindow)
@@ skipping 53 matching lines @@
 }
 
 bool WorkspaceController::GetAcceleratorForCommandId(
       int command_id,
       ui::Accelerator* accelerator) {
   return false;
 }
 
 }  // namespace internal
 }  // namespace ash