Linux: Refactor X11DesktopHandler

ui/events/platform/x11/x11_event_source.cc

Index: ui/events/platform/x11/x11_event_source.cc
diff --git a/ui/events/platform/x11/x11_event_source.cc b/ui/events/platform/x11/x11_event_source.cc
index ea5638d34ec9fc54873db958277a390feb370098..ac6111ad93d5653887e8b42f2c60195e14b020c5 100644
--- a/ui/events/platform/x11/x11_event_source.cc
+++ b/ui/events/platform/x11/x11_event_source.cc
@@ -180,6 +180,18 @@ Time X11EventSource::UpdateLastSeenServerTime() {
   return last_seen_server_time_;
 }
 
+void X11EventSource::SetLastSeenServerTime(Time time) {
+  if (time != CurrentTime) {
+    int64_t event_time_64 = time;
+    int64_t time_difference = last_seen_server_time_ - event_time_64;
+    // Ignore timestamps that go backwards. However, X server time is a 32-bit
+    // millisecond counter, so if the time goes backwards by more than half the
+    // range of the 32-bit counter, treat it as a rollover.
+    if (time_difference < 0 || time_difference > (UINT32_MAX >> 1))
+      last_seen_server_time_ = time;
+  }
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // X11EventSource, protected
 
@@ -189,16 +201,7 @@ void X11EventSource::ExtractCookieDataDispatchEvent(XEvent* xevent) {
       XGetEventData(xevent->xgeneric.display, &xevent->xcookie)) {
     have_cookie = true;
   }
-  Time event_time = ExtractTimeFromXEvent(*xevent);
-  if (event_time != CurrentTime) {
-    int64_t event_time_64 = event_time;
-    int64_t time_difference = last_seen_server_time_ - event_time_64;
-    // Ignore timestamps that go backwards. However, X server time is a 32-bit
-    // millisecond counter, so if the time goes backwards by more than half the
-    // range of the 32-bit counter, treat it as a rollover.
-    if (time_difference < 0 || time_difference > (UINT32_MAX >> 1))
-      last_seen_server_time_ = event_time;
-  }
+  SetLastSeenServerTime(ExtractTimeFromXEvent(*xevent));
   delegate_->ProcessXEvent(xevent);
   PostDispatchEvent(xevent);
   if (have_cookie)