[Ozone-Evdev] Propagate touchscreen device information to DeviceDataManager

ui/events/ozone/evdev/event_converter_evdev.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_EVENTS_OZONE_EVDEV_EVENT_CONVERTER_EVDEV_H_
 #define UI_EVENTS_OZONE_EVDEV_EVENT_CONVERTER_EVDEV_H_
 
 #include "base/callback.h"
 #include "base/files/file_path.h"
 #include "base/message_loop/message_loop.h"
 #include "ui/events/ozone/evdev/events_ozone_evdev_export.h"
+#include "ui/gfx/geometry/size.h"
 
 namespace ui {
 
 class Event;
 
 typedef base::Callback<void(Event*)> EventDispatchCallback;
 
 class EVENTS_OZONE_EVDEV_EXPORT EventConverterEvdev
     : public base::MessagePumpLibevent::Watcher {
  public:
-  EventConverterEvdev(int fd, const base::FilePath& path);
+  EventConverterEvdev(int fd, const base::FilePath& path, int id);
   virtual ~EventConverterEvdev();
 
+  int id() const { return id_; }
+
   // Start reading events.
   void Start();
 
   // Stop reading events.
   void Stop();
 
+  // Returns true of the converter is used for a touchscreen device.
+  virtual bool HasTouchscreen() const;
+
+  // Returns the size of the touchscreen device if the converter is used for a
+  // touchscreen device.
+  virtual gfx::Size GetTouchscreenSize() const;
+
  protected:
   // base::MessagePumpLibevent::Watcher:
   virtual void OnFileCanWriteWithoutBlocking(int fd) OVERRIDE;
 
   // File descriptor to read.
   int fd_;
 
   // Path to input device.
   base::FilePath path_;
 
+  // Uniquely identifies an event converter.
+  int id_;
+
   // Controller for watching the input fd.
   base::MessagePumpLibevent::FileDescriptorWatcher controller_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(EventConverterEvdev);
 };
 
 }  // namespace ui
 
 #endif  // UI_EVENTS_OZONE_EVDEV_EVENT_CONVERTER_EVDEV_H_