ozone: evdev: Fix possibility of stuck keys with libevdev

ui/events/ozone/evdev/libgestures_glue/event_reader_libevdev_cros.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_LIBGESTURES_GLUE_EVENT_READER_LIBEVDEV_CROS_H_
 #define UI_EVENTS_OZONE_EVDEV_LIBGESTURES_GLUE_EVENT_READER_LIBEVDEV_CROS_H_
 
 #include <libevdev/libevdev.h>
 
 #include "base/files/file_path.h"
@@ skipping 17 matching lines @@
     virtual ~Delegate();
 
     // Notifier for open. This is called with the initial event state.
     virtual void OnLibEvdevCrosOpen(Evdev* evdev, EventStateRec* evstate) = 0;
 
     // Notifier for event. This is called with the updated event state.
     virtual void OnLibEvdevCrosEvent(Evdev* evdev,
                                      EventStateRec* state,
                                      const timeval& time) = 0;
 
+    // Notifier for stop. This is called with the final event state.
+    virtual void OnLibEvdevCrosStopped(Evdev* evdev, EventStateRec* state) = 0;
+
     // Sets which keyboard keys should be processed.
     virtual void SetAllowedKeys(scoped_ptr<std::set<DomCode>> allowed_keys) = 0;
 
     // Allows all keys to be processed.
     virtual void AllowAllKeys() = 0;
   };
 
   EventReaderLibevdevCros(int fd,
                           const base::FilePath& path,
                           int id,
                           InputDeviceType type,
                           const EventDeviceInfo& devinfo,
                           scoped_ptr<Delegate> delegate);
   ~EventReaderLibevdevCros() override;
 
   // EventConverterEvdev:
   void OnFileCanReadWithoutBlocking(int fd) override;
   bool HasKeyboard() const override;
   bool HasMouse() const override;
   bool HasTouchpad() const override;
   bool HasCapsLockLed() const override;
   void SetAllowedKeys(scoped_ptr<std::set<DomCode>> allowed_keys) override;
   void AllowAllKeys() override;
+  void OnStopped() override;
 
  private:
   static void OnSynReport(void* data,
                           EventStateRec* evstate,
                           struct timeval* tv);
   static void OnLogMessage(void*, int level, const char*, ...);
 
   // Input modalities for this device.
   bool has_keyboard_;
   bool has_mouse_;
@@ skipping 13 matching lines @@
 
   // Delegate for event processing.
   scoped_ptr<Delegate> delegate_;
 
   DISALLOW_COPY_AND_ASSIGN(EventReaderLibevdevCros);
 };
 
 }  // namspace ui
 
 #endif  // UI_EVENTS_OZONE_EVDEV_LIBGESTURES_GLUE_EVENT_READER_LIBEVDEV_CROS_H_