cc: Change scoped_ptr<T>() to nullptr.

cc/test/animation_test_common.cc

 // Copyright 2012 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 "cc/test/animation_test_common.h"
 
 #include "cc/animation/animation_id_provider.h"
 #include "cc/animation/keyframed_animation_curve.h"
 #include "cc/animation/layer_animation_controller.h"
 #include "cc/animation/transform_operations.h"
@@ skipping 18 matching lines @@
                          float end_opacity,
                          bool use_timing_function) {
   scoped_ptr<KeyframedFloatAnimationCurve>
       curve(KeyframedFloatAnimationCurve::Create());
 
   scoped_ptr<TimingFunction> func;
   if (!use_timing_function)
     func = EaseTimingFunction::Create();
   if (duration > 0.0)
     curve->AddKeyframe(FloatKeyframe::Create(0.0, start_opacity, func.Pass()));
-  curve->AddKeyframe(FloatKeyframe::Create(
-      duration, end_opacity, scoped_ptr<TimingFunction>()));
+  curve->AddKeyframe(FloatKeyframe::Create(duration, end_opacity, nullptr));
 
   int id = AnimationIdProvider::NextAnimationId();
 
   scoped_ptr<Animation> animation(
       Animation::Create(curve.Pass(),
                         id,
                         AnimationIdProvider::NextGroupId(),
                         Animation::Opacity));
   animation->set_needs_synchronized_start_time(true);
 
   target->AddAnimation(animation.Pass());
   return id;
 }
 
 template <class Target>
 int AddAnimatedTransform(Target* target,
                          double duration,
                          TransformOperations start_operations,
                          TransformOperations operations) {
   scoped_ptr<KeyframedTransformAnimationCurve>
       curve(KeyframedTransformAnimationCurve::Create());
 
   if (duration > 0.0) {
-    curve->AddKeyframe(TransformKeyframe::Create(
-        0.0, start_operations, scoped_ptr<TimingFunction>()));
+    curve->AddKeyframe(
+        TransformKeyframe::Create(0.0, start_operations, nullptr));
   }
 
-  curve->AddKeyframe(TransformKeyframe::Create(
-      duration, operations, scoped_ptr<TimingFunction>()));
+  curve->AddKeyframe(TransformKeyframe::Create(duration, operations, nullptr));
 
   int id = AnimationIdProvider::NextAnimationId();
 
   scoped_ptr<Animation> animation(
       Animation::Create(curve.Pass(),
                         id,
                         AnimationIdProvider::NextGroupId(),
                         Animation::Transform));
   animation->set_needs_synchronized_start_time(true);
 
@@ skipping 21 matching lines @@
                       double duration,
                       float start_brightness,
                       float end_brightness) {
   scoped_ptr<KeyframedFilterAnimationCurve>
       curve(KeyframedFilterAnimationCurve::Create());
 
   if (duration > 0.0) {
     FilterOperations start_filters;
     start_filters.Append(
         FilterOperation::CreateBrightnessFilter(start_brightness));
-    curve->AddKeyframe(FilterKeyframe::Create(
-        0.0, start_filters, scoped_ptr<TimingFunction>()));
+    curve->AddKeyframe(FilterKeyframe::Create(0.0, start_filters, nullptr));
   }
 
   FilterOperations filters;
   filters.Append(FilterOperation::CreateBrightnessFilter(end_brightness));
-  curve->AddKeyframe(
-      FilterKeyframe::Create(duration, filters, scoped_ptr<TimingFunction>()));
+  curve->AddKeyframe(FilterKeyframe::Create(duration, filters, nullptr));
 
   int id = AnimationIdProvider::NextAnimationId();
 
   scoped_ptr<Animation> animation(Animation::Create(
       curve.Pass(), id, AnimationIdProvider::NextGroupId(), Animation::Filter));
   animation->set_needs_synchronized_start_time(true);
 
   target->AddAnimation(animation.Pass());
   return id;
 }
@@ skipping 212 matching lines @@
                              double duration,
                              float start_brightness,
                              float end_brightness) {
   return AddAnimatedFilter(layer->layer_animation_controller(),
                            duration,
                            start_brightness,
                            end_brightness);
 }
 
 }  // namespace cc