[WIP][Ozone] Support external touchscreens

ui/ozone/platform/dri/dri_window.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_OZONE_PLATFORM_DRI_DRI_WINDOW_H_
 #define UI_OZONE_PLATFORM_DRI_DRI_WINDOW_H_
 
 #include "base/memory/scoped_ptr.h"
 #include "ui/events/platform/platform_event_dispatcher.h"
 #include "ui/gfx/geometry/rect.h"
 #include "ui/gfx/native_widget_types.h"
 #include "ui/ozone/platform/dri/channel_observer.h"
+#include "ui/ozone/platform/dri/touch_converter.h"
 #include "ui/platform_window/platform_window.h"
 
 namespace ui {
 
+class DisplayManager;
 class DriWindowDelegate;
 class DriWindowManager;
 class EventFactoryEvdev;
 class DriGpuPlatformSupportHost;
 
 class DriWindow : public PlatformWindow,
                   public PlatformEventDispatcher,
                   public ChannelObserver {
  public:
   DriWindow(PlatformWindowDelegate* delegate,
             const gfx::Rect& bounds,
             DriGpuPlatformSupportHost* sender,
             EventFactoryEvdev* event_factory,
-            DriWindowManager* window_manager);
+            DriWindowManager* window_manager,
+            DisplayManager* display_manager);
   virtual ~DriWindow();
 
   void Initialize();
 
   // PlatformWindow:
   virtual void Show() override;
   virtual void Hide() override;
   virtual void Close() override;
   virtual void SetBounds(const gfx::Rect& bounds) override;
   virtual gfx::Rect GetBounds() override;
@@ skipping 16 matching lines @@
 
  private:
   PlatformWindowDelegate* delegate_;   // Not owned.
   DriGpuPlatformSupportHost* sender_;  // Not owned.
   EventFactoryEvdev* event_factory_;   // Not owned.
   DriWindowManager* window_manager_;   // Not owned.
 
   gfx::Rect bounds_;
   gfx::AcceleratedWidget widget_;
 
+  // Transforms touch events into the window coordinate system.
+  TouchConverter touch_converter_;
+
   DISALLOW_COPY_AND_ASSIGN(DriWindow);
 };
 
 }  // namespace ui
 
 #endif  // UI_OZONE_PLATFORM_DRI_DRI_WINDOW_H_