Move touchscreen device caching to DeviceDataManager

ui/display/chromeos/touchscreen_delegate_impl.h

 // Copyright 2014 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.
 
 #ifndef UI_DISPLAY_CHROMEOS_TOUCHSCREEN_DELEGATE_IMPL_H_
 #define UI_DISPLAY_CHROMEOS_TOUCHSCREEN_DELEGATE_IMPL_H_
 
 #include "base/memory/scoped_ptr.h"
 #include "ui/display/chromeos/display_configurator.h"
 #include "ui/display/display_export.h"
-#include "ui/display/types/chromeos/touchscreen_device.h"
 
 namespace ui {
 
-class TouchscreenDeviceManager;
-
 class DISPLAY_EXPORT TouchscreenDelegateImpl
     : public DisplayConfigurator::TouchscreenDelegate {
  public:
-  explicit TouchscreenDelegateImpl(
-      scoped_ptr<TouchscreenDeviceManager> touch_device_manager);
+  TouchscreenDelegateImpl();
   virtual ~TouchscreenDelegateImpl();
 
   // DisplayConfigurator::TouchscreenDelegate overrides:
   virtual void AssociateTouchscreens(
       std::vector<DisplayConfigurator::DisplayState>* displays) OVERRIDE;
 
  private:
-  scoped_ptr<TouchscreenDeviceManager> touch_device_manager_;
-
   DISALLOW_COPY_AND_ASSIGN(TouchscreenDelegateImpl);
 };
 
 }  // namespace ui
 
 #endif  // UI_DISPLAY_CHROMEOS_TOUCHSCREEN_DELEGATE_IMPL_H_