bindings: Pass is_null flag to attribute setters when they are nullable

third_party/WebKit/Source/core/animation/AnimationTimeline.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 204 matching lines @@
 
 double AnimationTimeline::currentTime() {
   return CurrentTimeInternal() * 1000;
 }
 
 double AnimationTimeline::CurrentTimeInternal() {
   bool is_null;
   return CurrentTimeInternal(is_null);
 }
 
-void AnimationTimeline::setCurrentTime(double current_time) {
+void AnimationTimeline::setCurrentTime(double current_time, bool is_null) {
   SetCurrentTimeInternal(current_time / 1000);
 }
 
 void AnimationTimeline::SetCurrentTimeInternal(double current_time) {
   if (!IsActive())
     return;
   zero_time_ = playback_rate_ == 0
                    ? current_time
                    : GetDocument()->GetAnimationClock().CurrentTime() -
                          current_time / playback_rate_;
@@ skipping 82 matching lines @@
 }
 
 DEFINE_TRACE(AnimationTimeline) {
   visitor->Trace(document_);
   visitor->Trace(timing_);
   visitor->Trace(animations_needing_update_);
   visitor->Trace(animations_);
 }
 
 }  // namespace blink