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

third_party/WebKit/Source/core/animation/AnimationTimelineTest.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 257 matching lines @@
   EXPECT_EQ(zero_time + 200, timeline->ZeroTime());
 
   timeline->SetCurrentTimeInternal(100);
   EXPECT_EQ(100, timeline->CurrentTimeInternal());
   EXPECT_EQ(zero_time + 100, timeline->ZeroTime());
 
   timeline->SetCurrentTimeInternal(200);
   EXPECT_EQ(200, timeline->CurrentTimeInternal());
   EXPECT_EQ(zero_time, timeline->ZeroTime());
 
-  timeline->setCurrentTime(0);
+  timeline->setCurrentTime(0, false);
   EXPECT_EQ(0, timeline->currentTime());
   EXPECT_EQ(zero_time + 200, timeline->ZeroTime());
 
-  timeline->setCurrentTime(1000);
+  timeline->setCurrentTime(1000, false);
   EXPECT_EQ(1000, timeline->currentTime());
   EXPECT_EQ(zero_time + 199, timeline->ZeroTime());
 
-  timeline->setCurrentTime(2000);
+  timeline->setCurrentTime(2000, false);
   EXPECT_EQ(2000, timeline->currentTime());
   EXPECT_EQ(zero_time + 198, timeline->ZeroTime());
 }
 
 TEST_F(AnimationAnimationTimelineTest, PauseForTesting) {
   float seek_time = 1;
   timing.fill_mode = Timing::FillMode::FORWARDS;
   KeyframeEffect* anim1 =
       KeyframeEffect::Create(element.Get(),
                              AnimatableValueKeyframeEffectModel::Create(
@@ skipping 34 matching lines @@
   Wake();
 
   EXPECT_CALL(*platform_timing, ServiceOnNextFrame());
   UpdateClockAndService(4.98);
 }
 
 TEST_F(AnimationAnimationTimelineTest, UseAnimationAfterTimelineDeref) {
   Animation* animation = timeline->Play(0);
   timeline.Clear();
   // Test passes if this does not crash.
-  animation->setStartTime(0);
+  animation->setStartTime(0, false);
 }
 
 }  // namespace blink