ozone: evdev: Add gamepad support

ui/events/ozone/gamepad/gamepad_event.cc

Index: ui/events/ozone/gamepad/gamepad_event.cc
diff --git a/ui/events/ozone/gamepad/gamepad_event.cc b/ui/events/ozone/gamepad/gamepad_event.cc
new file mode 100644
index 0000000000000000000000000000000000000000..e71aaa2fc29c03e8549288cbfe9f276c8f5a5c82
--- /dev/null
+++ b/ui/events/ozone/gamepad/gamepad_event.cc
@@ -0,0 +1,20 @@
+// Copyright 2017 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.
+
+#include "ui/events/ozone/gamepad/gamepad_event.h"
+
+namespace ui {
+
+GamepadEvent::GamepadEvent(int device_id,
+                           GamepadEventType type,
+                           uint16_t code,
+                           double value,
+                           base::TimeTicks timestamp)
+    : device_id_(device_id),
+      type_(type),
+      code_(code),
+      value_(value),
+      timestamp_(timestamp) {}
+
+}  // namespace ui