Chromium roll (https://codereview.chromium.org/976353002)

ui/events/platform/x11/x11_event_source_libevent.cc

Index: ui/events/platform/x11/x11_event_source_libevent.cc
diff --git a/ui/events/platform/x11/x11_event_source_libevent.cc b/ui/events/platform/x11/x11_event_source_libevent.cc
index 8ad7931b3f0df3d825eac818ddea7fc83ca221f5..0df1977873b7a443ca1827b1bb59fba6e29dcd77 100644
--- a/ui/events/platform/x11/x11_event_source_libevent.cc
+++ b/ui/events/platform/x11/x11_event_source_libevent.cc
@@ -22,7 +22,7 @@ class X11EventSourceLibevent : public X11EventSource,
     AddEventWatcher();
   }
 
-  virtual ~X11EventSourceLibevent() {
+  ~X11EventSourceLibevent() override {
   }
 
  private:
@@ -39,16 +39,16 @@ class X11EventSourceLibevent : public X11EventSource,
   }
 
   // PlatformEventSource:
-  virtual void OnDispatcherListChanged() override {
+  void OnDispatcherListChanged() override {
     AddEventWatcher();
   }
 
   // base::MessagePumpLibevent::Watcher:
-  virtual void OnFileCanReadWithoutBlocking(int fd) override {
+  void OnFileCanReadWithoutBlocking(int fd) override {
     DispatchXEvents();
   }
 
-  virtual void OnFileCanWriteWithoutBlocking(int fd) override {
+  void OnFileCanWriteWithoutBlocking(int fd) override {
     NOTREACHED();
   }