CC Animation: Make AnimationRegistrar a private member of AnimationHost.

cc/animation/animation_player_unittest.cc

Index: cc/animation/animation_player_unittest.cc
diff --git a/cc/animation/animation_player_unittest.cc b/cc/animation/animation_player_unittest.cc
index 6e165fd7466c0881d82136a8f42b5237a969ee4d..de5b2c1650804d27a31b7add37fedf0d21b6e39a 100644
--- a/cc/animation/animation_player_unittest.cc
+++ b/cc/animation/animation_player_unittest.cc
@@ -7,7 +7,6 @@
 #include "cc/animation/animation_delegate.h"
 #include "cc/animation/animation_host.h"
 #include "cc/animation/animation_id_provider.h"
-#include "cc/animation/animation_registrar.h"
 #include "cc/animation/animation_timeline.h"
 #include "cc/animation/element_animations.h"
 #include "cc/test/animation_test_common.h"
@@ -136,7 +135,7 @@ TEST_F(AnimationPlayerTest, PropertiesMutate) {
   EXPECT_FALSE(client_impl_.IsPropertyMutated(layer_id_, LayerTreeType::ACTIVE,
                                               TargetProperty::FILTER));
 
-  host_impl_->animation_registrar()->ActivateAnimations();
+  host_impl_->ActivateAnimations();
 
   base::TimeTicks time;
   time += base::TimeDelta::FromSecondsD(0.1);
@@ -205,7 +204,7 @@ TEST_F(AnimationPlayerTest, AttachTwoPlayersToOneLayer) {
                                transform_y);
 
   host_->PushPropertiesTo(host_impl_);
-  host_impl_->animation_registrar()->ActivateAnimations();
+  host_impl_->ActivateAnimations();
 
   EXPECT_FALSE(delegate1.started_);
   EXPECT_FALSE(delegate1.finished_);
@@ -287,7 +286,7 @@ TEST_F(AnimationPlayerTest, AddRemoveAnimationToNonAttachedPlayer) {
   EXPECT_FALSE(client_impl_.IsPropertyMutated(layer_id_, LayerTreeType::ACTIVE,
                                               TargetProperty::FILTER));
 
-  host_impl_->animation_registrar()->ActivateAnimations();
+  host_impl_->ActivateAnimations();
 
   base::TimeTicks time;
   time += base::TimeDelta::FromSecondsD(0.1);