Add persisted preference for projection touch HUD

ash/root_window_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/root_window_controller.h"
 
 #include <vector>
 
 #include "ash/ash_constants.h"
 #include "ash/ash_switches.h"
@@ skipping 450 matching lines @@
 }
 
 void RootWindowController::UpdateShelfVisibility() {
   shelf_->shelf_layout_manager()->UpdateVisibilityState();
 }
 
 void RootWindowController::InitTouchHuds() {
   CommandLine* command_line = CommandLine::ForCurrentProcess();
   if (command_line->HasSwitch(switches::kAshTouchHud))
     set_touch_hud_debug(new TouchHudDebug(root_window_.get()));
-  if (Shell::GetInstance()->is_touch_hud_projection_enabled())
+  if (Shell::GetInstance()->delegate()->IsTouchHudProjectionEnabled())
     EnableTouchHudProjection();
 }
 
 aura::Window* RootWindowController::GetFullscreenWindow() const {
   aura::Window* container = workspace_controller_->GetActiveWorkspaceWindow();
   for (size_t i = 0; i < container->children().size(); ++i) {
     aura::Window* child = container->children()[i];
     if (ash::wm::IsWindowFullscreen(child))
       return child;
   }
@@ skipping 180 matching lines @@
       "OverlayContainer",
       lock_screen_related_containers);
   SetUsesScreenCoordinates(overlay_container);
 
   CreateContainer(kShellWindowId_PowerButtonAnimationContainer,
                   "PowerButtonAnimationContainer", root_window) ;
 }
 
 }  // namespace internal
 }  // namespace ash