Use nullptr_t for RefPtr, PassRefPtr and RawPtr.

Source/core/animation/AnimationTest.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 "config.h"
 #include "core/animation/Animation.h"
 
 #include "bindings/v8/Dictionary.h"
 #include "core/animation/AnimatableLength.h"
 #include "core/animation/AnimationClock.h"
@@ skipping 648 matching lines @@
     EXPECT_EQ(*controlTiming.timingFunction.get(), *updatedTiming.timingFunction.get());
 }
 
 TEST_F(AnimationAnimationTest, TimeToEffectChange)
 {
     Timing timing;
     timing.iterationDuration = 100;
     timing.startDelay = 100;
     timing.endDelay = 100;
     timing.fillMode = Timing::FillModeNone;
-    RefPtr<Animation> animation = Animation::create(0, 0, timing);
+    RefPtr<Animation> animation = Animation::create(nullptr, nullptr, timing);
     RefPtr<Player> player = document->timeline()->play(animation.get());
     double inf = std::numeric_limits<double>::infinity();
 
     EXPECT_EQ(100, animation->timeToForwardsEffectChange());
     EXPECT_EQ(inf, animation->timeToReverseEffectChange());
 
     player->setCurrentTime(100);
     EXPECT_EQ(0, animation->timeToForwardsEffectChange());
     EXPECT_EQ(0, animation->timeToReverseEffectChange());
 
@@ skipping 12 matching lines @@
 }
 
 TEST_F(AnimationAnimationTest, TimeToEffectChangeWithPlaybackRate)
 {
     Timing timing;
     timing.iterationDuration = 100;
     timing.startDelay = 100;
     timing.endDelay = 100;
     timing.playbackRate = 2;
     timing.fillMode = Timing::FillModeNone;
-    RefPtr<Animation> animation = Animation::create(0, 0, timing);
+    RefPtr<Animation> animation = Animation::create(nullptr, nullptr, timing);
     RefPtr<Player> player = document->timeline()->play(animation.get());
     double inf = std::numeric_limits<double>::infinity();
 
     EXPECT_EQ(100, animation->timeToForwardsEffectChange());
     EXPECT_EQ(inf, animation->timeToReverseEffectChange());
 
     player->setCurrentTime(100);
     EXPECT_EQ(0, animation->timeToForwardsEffectChange());
     EXPECT_EQ(0, animation->timeToReverseEffectChange());
 
@@ skipping 12 matching lines @@
 }
 
 TEST_F(AnimationAnimationTest, TimeToEffectChangeWithNegativePlaybackRate)
 {
     Timing timing;
     timing.iterationDuration = 100;
     timing.startDelay = 100;
     timing.endDelay = 100;
     timing.playbackRate = -2;
     timing.fillMode = Timing::FillModeNone;
-    RefPtr<Animation> animation = Animation::create(0, 0, timing);
+    RefPtr<Animation> animation = Animation::create(nullptr, nullptr, timing);
     RefPtr<Player> player = document->timeline()->play(animation.get());
     double inf = std::numeric_limits<double>::infinity();
 
     EXPECT_EQ(100, animation->timeToForwardsEffectChange());
     EXPECT_EQ(inf, animation->timeToReverseEffectChange());
 
     player->setCurrentTime(100);
     EXPECT_EQ(0, animation->timeToForwardsEffectChange());
     EXPECT_EQ(0, animation->timeToReverseEffectChange());
 
     player->setCurrentTime(149);
     EXPECT_EQ(0, animation->timeToForwardsEffectChange());
     EXPECT_EQ(0, animation->timeToReverseEffectChange());
 
     player->setCurrentTime(150);
     EXPECT_EQ(inf, animation->timeToForwardsEffectChange());
     EXPECT_EQ(0, animation->timeToReverseEffectChange());
 
     player->setCurrentTime(200);
     EXPECT_EQ(inf, animation->timeToForwardsEffectChange());
     EXPECT_EQ(50, animation->timeToReverseEffectChange());
 }
 
 } // namespace WebCore