ozone: evdev: Move read polling into EventConverterEvdev

ui/events/ozone/evdev/key_event_converter_evdev.cc

Index: ui/events/ozone/evdev/key_event_converter_evdev.cc
diff --git a/ui/events/ozone/evdev/key_event_converter_evdev.cc b/ui/events/ozone/evdev/key_event_converter_evdev.cc
index caf3f199528bd7251d4c2dc38c7dd7e5c9f65893..3bcb5f2f251266727462cc4e056ad6db9107a61e 100644
--- a/ui/events/ozone/evdev/key_event_converter_evdev.cc
+++ b/ui/events/ozone/evdev/key_event_converter_evdev.cc
@@ -194,9 +194,8 @@ KeyEventConverterEvdev::KeyEventConverterEvdev(
     base::FilePath path,
     EventModifiersEvdev* modifiers,
     const EventDispatchCallback& callback)
-    : EventConverterEvdev(callback),
-      fd_(fd),
-      path_(path),
+    : EventConverterEvdev(fd, path),
+      callback_(callback),
       modifiers_(modifiers) {
   // TODO(spang): Initialize modifiers using EVIOCGKEY.
 }
@@ -206,15 +205,6 @@ KeyEventConverterEvdev::~KeyEventConverterEvdev() {
   close(fd_);
 }
 
-void KeyEventConverterEvdev::Start() {
-  base::MessageLoopForUI::current()->WatchFileDescriptor(
-      fd_, true, base::MessagePumpLibevent::WATCH_READ, &controller_, this);
-}
-
-void KeyEventConverterEvdev::Stop() {
-  controller_.StopWatchingFileDescriptor();
-}
-
 void KeyEventConverterEvdev::OnFileCanReadWithoutBlocking(int fd) {
   input_event inputs[4];
   ssize_t read_size = read(fd, inputs, sizeof(inputs));
@@ -231,10 +221,6 @@ void KeyEventConverterEvdev::OnFileCanReadWithoutBlocking(int fd) {
   ProcessEvents(inputs, read_size / sizeof(*inputs));
 }
 
-void KeyEventConverterEvdev::OnFileCanWriteWithoutBlocking(int fd) {
-  NOTREACHED();
-}
-
 void KeyEventConverterEvdev::ProcessEvents(const input_event* inputs,
                                            int count) {
   for (int i = 0; i < count; ++i) {
@@ -270,7 +256,7 @@ void KeyEventConverterEvdev::ConvertKeyEvent(int key, int value) {
       code,
       KeycodeConverter::NativeKeycodeToCode(key + kXkbKeycodeOffset),
       flags);
-  DispatchEventToCallback(&key_event);
+  callback_.Run(&key_event);
 }
 
 }  // namespace ui