Refactors away method implementations in ui::EventTargeter

ui/events/null_event_targeter.cc

Index: ui/events/null_event_targeter.cc
diff --git a/ui/events/null_event_targeter.cc b/ui/events/null_event_targeter.cc
index 8907384418e9d606b5a162373e3ec496aa56ca03..9a946a9b079dc2a68c5f87136057b1497ef49e82 100644
--- a/ui/events/null_event_targeter.cc
+++ b/ui/events/null_event_targeter.cc
@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+#include "base/logging.h"
 #include "ui/events/null_event_targeter.h"
 
 namespace ui {
@@ -17,4 +18,10 @@ EventTarget* NullEventTargeter::FindTargetForEvent(EventTarget* root,
   return nullptr;
 }
 
+EventTarget* NullEventTargeter::FindNextBestTarget(EventTarget* previous_target,
+                                                   Event* event) {
+  NOTREACHED();
+  return nullptr;
+}
+
 }  // namespace ui