Move ash specific cursor code to CursorManager.

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 <string>
 
 #include "ash/accelerators/focus_manager_factory.h"
@@ skipping 354 matching lines @@
   focus_manager_.reset(new aura::FocusManager);
   activation_controller_.reset(
       new internal::ActivationController(focus_manager_.get()));
 
   screen_position_controller_.reset(new internal::ScreenPositionController);
   display_controller_.reset(new DisplayController);
   display_controller_->InitPrimaryDisplay();
   aura::RootWindow* root_window = display_controller_->GetPrimaryRootWindow();
   active_root_window_ = root_window;
 
+  cursor_manager_.SetDeviceScaleFactor(
+      root_window->AsRootWindowHostDelegate()->GetDeviceScaleFactor());
+
 #if !defined(OS_MACOSX)
   nested_dispatcher_controller_.reset(new NestedDispatcherController);
   accelerator_controller_.reset(new AcceleratorController);
 #endif
   shell_context_menu_.reset(new internal::ShellContextMenu);
 
   // The order in which event filters are added is significant.
   DCHECK(!GetEnvEventFilterCount());
   user_activity_detector_.reset(new UserActivityDetector);
   AddEnvEventFilter(user_activity_detector_.get());
@@ skipping 371 matching lines @@
 }
 
 void Shell::ShowCursor(bool visible) {
   RootWindowList root_windows = GetAllRootWindows();
   for (RootWindowList::iterator iter = root_windows.begin();
        iter != root_windows.end(); ++iter)
     (*iter)->ShowCursor(visible);
 }
 
 }  // namespace ash