ozone: evdev: Move read polling into EventConverterEvdev

ui/events/ozone/evdev/key_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_KEY_EVENT_CONVERTER_EVDEV_H_
 #define UI_EVENTS_OZONE_EVDEV_KEY_EVENT_CONVERTER_EVDEV_H_
 
 #include "base/files/file_path.h"
 #include "base/message_loop/message_pump_libevent.h"
 #include "ui/events/event.h"
 #include "ui/events/ozone/evdev/event_converter_evdev.h"
 #include "ui/events/ozone/evdev/event_modifiers_evdev.h"
 #include "ui/events/ozone/evdev/events_ozone_evdev_export.h"
 
 struct input_event;
 
 namespace ui {
 
 class EVENTS_OZONE_EVDEV_EXPORT KeyEventConverterEvdev
-    : public EventConverterEvdev,
-      public base::MessagePumpLibevent::Watcher {
+    : public EventConverterEvdev {
  public:
   KeyEventConverterEvdev(int fd,
                          base::FilePath path,
                          EventModifiersEvdev* modifiers,
                          const EventDispatchCallback& dispatch);
   virtual ~KeyEventConverterEvdev();
 
-  // Start & stop watching for events.
-  virtual void Start() OVERRIDE;
-  virtual void Stop() OVERRIDE;
-
-  // Overidden from base::MessagePumpLibevent::Watcher.
+  // EventConverterEvdev:
   virtual void OnFileCanReadWithoutBlocking(int fd) OVERRIDE;
-  virtual void OnFileCanWriteWithoutBlocking(int fd) OVERRIDE;
 
   void ProcessEvents(const struct input_event* inputs, int count);
 
  private:
-  // File descriptor for the /dev/input/event* instance.
-  int fd_;
-
-  // Path to input device.
-  base::FilePath path_;
+  // Callback for dispatching events.
+  EventDispatchCallback callback_;
 
   // Shared modifier state.
   EventModifiersEvdev* modifiers_;
 
   // Controller for watching the input fd.
   base::MessagePumpLibevent::FileDescriptorWatcher controller_;
 
   void ConvertKeyEvent(int key, int value);
 
   DISALLOW_COPY_AND_ASSIGN(KeyEventConverterEvdev);
 };
 
 }  // namspace ui
 
 #endif  // UI_EVENTS_OZONE_EVDEV_KEY_EVENT_CONVERTER_EVDEV_H_