ozone: evdev: Add gamepad support

ui/events/ozone/evdev/event_factory_evdev.cc

Index: ui/events/ozone/evdev/event_factory_evdev.cc
diff --git a/ui/events/ozone/evdev/event_factory_evdev.cc b/ui/events/ozone/evdev/event_factory_evdev.cc
index c071853f11cbd181038385f480a6c962d9271277..88805abe983974977e5249aa0f98b4d120f54957 100644
--- a/ui/events/ozone/evdev/event_factory_evdev.cc
+++ b/ui/events/ozone/evdev/event_factory_evdev.cc
@@ -42,6 +42,11 @@ class ProxyDeviceEventDispatcher : public DeviceEventDispatcherEvdev {
   ~ProxyDeviceEventDispatcher() override {}
 
   // DeviceEventDispatcher:
+  void DispatchGamepadEvent(const GamepadEventParams& params) override {
+    ui_thread_runner_->PostTask(
+        FROM_HERE, base::Bind(&EventFactoryEvdev::DispatchGamepadEvent,
+                              event_factory_evdev_, params));
+  }
   void DispatchKeyEvent(const KeyEventParams& params) override {
     ui_thread_runner_->PostTask(FROM_HERE,
                                 base::Bind(&EventFactoryEvdev::DispatchKeyEvent,
@@ -84,6 +89,13 @@ class ProxyDeviceEventDispatcher : public DeviceEventDispatcherEvdev {
                               event_factory_evdev_, params));
   }
 
+  void DispatchGamepadDevicesUpdated(
+      const std::vector<InputDevice>& devices) override {
+    ui_thread_runner_->PostTask(
+        FROM_HERE, base::Bind(&EventFactoryEvdev::DispatchGamepadDevicesUpdated,
+                              event_factory_evdev_, devices));
+  }
+
   void DispatchKeyboardDevicesUpdated(
       const std::vector<InputDevice>& devices) override {
     ui_thread_runner_->PostTask(
@@ -194,6 +206,14 @@ EventFactoryEvdev::CreateSystemInputInjector() {
                                               cursor_);
 }
 
+void EventFactoryEvdev::DispatchGamepadEvent(const GamepadEventParams& params) {
+  TRACE_EVENT1("evdev", "EventFactoryEvdev::DispatchGamepadEvent", "device",
+               params.device_id);
+  GamepadEvent event(params.type, params.value, params.code, params.timestamp);
+  event.set_source_device_id(params.device_id);
+  DispatchUiEvent(&event);
+}
+
 void EventFactoryEvdev::DispatchKeyEvent(const KeyEventParams& params) {
   TRACE_EVENT1("evdev", "EventFactoryEvdev::DispatchKeyEvent", "device",
                params.device_id);
@@ -355,6 +375,13 @@ void EventFactoryEvdev::DispatchUiEvent(Event* event) {
   DispatchEvent(event);
 }
 
+void EventFactoryEvdev::DispatchGamepadDevicesUpdated(
+    const std::vector<InputDevice>& devices) {
+  TRACE_EVENT0("evdev", "EventFactoryEvdev::DispatchGamepadDevicesUpdated");
+  DeviceHotplugEventObserver* observer = DeviceDataManager::GetInstance();
+  observer->OnGamepadDevicesUpdated(devices);
+}
+
 void EventFactoryEvdev::DispatchKeyboardDevicesUpdated(
     const std::vector<InputDevice>& devices) {
   TRACE_EVENT0("evdev", "EventFactoryEvdev::DispatchKeyboardDevicesUpdated");