[C++11 Allowed Features] Declares a type-safe null pointer converting from NULL to nullptr

cc/animation/layer_animation_controller.h

Index: cc/animation/layer_animation_controller.h
diff --git a/cc/animation/layer_animation_controller.h b/cc/animation/layer_animation_controller.h
index dbb32392699c9ce32c02b0aeffb729fbda52a6d4..c7d363ce5c26dd045332c94f3ee2b4038146d7f8 100644
--- a/cc/animation/layer_animation_controller.h
+++ b/cc/animation/layer_animation_controller.h
@@ -105,7 +105,7 @@ class CC_EXPORT LayerAnimationController
 
   void remove_value_provider(LayerAnimationValueProvider* provider) {
     if (value_provider_ == provider)
-      value_provider_ = NULL;
+      value_provider_ = nullptr;
   }
 
   void set_layer_animation_delegate(AnimationDelegate* delegate) {
@@ -114,7 +114,7 @@ class CC_EXPORT LayerAnimationController
 
   void remove_layer_animation_delegate(AnimationDelegate* delegate) {
     if (layer_animation_delegate_ == delegate)
-      layer_animation_delegate_ = NULL;
+      layer_animation_delegate_ = nullptr;
   }
 
   bool HasFilterAnimationThatInflatesBounds() const;