ozone: evdev: Add gamepad support

ui/events/ozone/evdev/device_event_dispatcher_evdev.h

Index: ui/events/ozone/evdev/device_event_dispatcher_evdev.h
diff --git a/ui/events/ozone/evdev/device_event_dispatcher_evdev.h b/ui/events/ozone/evdev/device_event_dispatcher_evdev.h
index 7d5e634eda19564109490aeb0f1c95166ccfd2d2..500077a28718877a6e78ad15f9354ed870ea5308 100644
--- a/ui/events/ozone/evdev/device_event_dispatcher_evdev.h
+++ b/ui/events/ozone/evdev/device_event_dispatcher_evdev.h
@@ -150,6 +150,19 @@ struct EVENTS_OZONE_EVDEV_EXPORT TouchEventParams {
   base::TimeTicks timestamp;
 };
 
+struct EVENTS_OZONE_EVDEV_EXPORT GamepadEventParams {
+  GamepadEventParams(int device_id,
+                     EventType type,
+                     double value,
+                     uint16_t code,
+                     const base::TimeTicks timestamp);
+  int device_id;
+  EventType type;
+  double value;
+  uint16_t code;
+  base::TimeTicks timestamp;
+};
+
 // Interface used by device objects for event dispatch.
 class EVENTS_OZONE_EVDEV_EXPORT DeviceEventDispatcherEvdev {
  public:
@@ -157,6 +170,7 @@ class EVENTS_OZONE_EVDEV_EXPORT DeviceEventDispatcherEvdev {
   virtual ~DeviceEventDispatcherEvdev() {}
 
   // User input events.
+  virtual void DispatchGamepadEvent(const GamepadEventParams& params) = 0;
   virtual void DispatchKeyEvent(const KeyEventParams& params) = 0;
   virtual void DispatchMouseMoveEvent(const MouseMoveEventParams& params) = 0;
   virtual void DispatchMouseButtonEvent(
@@ -167,6 +181,8 @@ class EVENTS_OZONE_EVDEV_EXPORT DeviceEventDispatcherEvdev {
   virtual void DispatchTouchEvent(const TouchEventParams& params) = 0;
 
   // Device lifecycle events.
+  virtual void DispatchGamepadDevicesUpdated(
+      const std::vector<InputDevice>& devices) = 0;
   virtual void DispatchKeyboardDevicesUpdated(
       const std::vector<InputDevice>& devices) = 0;
   virtual void DispatchTouchscreenDevicesUpdated(