ozone: evdev: Add gamepad support

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 <stdint.h>
 
 #include <set>
@@ skipping 62 matching lines @@
 
   // Returns true if the converter is used for a touchpad device.
   virtual bool HasTouchpad() const;
 
   // Returns true if the converter is used for a touchscreen device.
   virtual bool HasTouchscreen() const;
 
   // Returns true if the converter is used for a pen device.
   virtual bool HasPen() const;
 
+  // Returns true if the converter is used for a device with gamepad input.
+  virtual bool HasGamepad() const;
+
   // Returns true if the converter is used for a device with a caps lock LED.
   virtual bool HasCapsLockLed() const;
 
   // Returns the size of the touchscreen device if the converter is used for a
   // touchscreen device.
   virtual gfx::Size GetTouchscreenSize() const;
 
   // Returns the number of touch points this device supports. Should not be
   // called unless HasTouchscreen() returns true
   virtual int GetTouchPoints() const;
@@ skipping 39 matching lines @@
   // 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_