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

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

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "core/animation/EffectStack.h"
 
 #include "core/animation/AnimationClock.h"
 #include "core/animation/CompositorPendingAnimations.h"
 #include "core/animation/DocumentTimeline.h"
 #include "core/animation/ElementAnimations.h"
@@ skipping 11 matching lines @@
   virtual void SetUp() {
     page_holder = DummyPageHolder::Create();
     document = &page_holder->GetDocument();
     document->GetAnimationClock().ResetTimeForTesting();
     timeline = DocumentTimeline::Create(document.Get());
     element = document->createElement("foo");
   }
 
   Animation* Play(KeyframeEffect* effect, double start_time) {
     Animation* animation = timeline->Play(effect);
-    animation->setStartTime(start_time * 1000);
+    animation->setStartTime(start_time * 1000, false);
     animation->Update(kTimingUpdateOnDemand);
     return animation;
   }
 
   void UpdateTimeline(double time) {
     document->GetAnimationClock().UpdateTime(document->Timeline().ZeroTime() +
                                              time);
     timeline->ServiceAnimations(kTimingUpdateForAnimationFrame);
   }
 
@@ skipping 171 matching lines @@
   interpolations = EffectStack::ActiveInterpolations(
       &element->GetElementAnimations()->GetEffectStack(), nullptr, nullptr,
       KeyframeEffectReadOnly::kDefaultPriority);
   EXPECT_EQ(1u, interpolations.size());
   EXPECT_TRUE(InterpolationValue(interpolations, CSSPropertyFontSize)
                   ->Equals(AnimatableDouble::Create(3).Get()));
   EXPECT_EQ(1u, SampledEffectCount());
 }
 
 }  // namespace blink