CC Animation: Make AnimationRegistrar a private member of AnimationHost.

cc/animation/element_animations_unittest.cc

 // Copyright 2015 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/animation/element_animations.h"
 
 #include "cc/animation/animation_delegate.h"
 #include "cc/animation/animation_host.h"
 #include "cc/animation/animation_id_provider.h"
 #include "cc/animation/animation_player.h"
-#include "cc/animation/animation_registrar.h"
 #include "cc/animation/animation_timeline.h"
 #include "cc/test/animation_test_common.h"
 #include "cc/test/animation_timelines_test_common.h"
 
 namespace cc {
 namespace {
 
 class ElementAnimationsTest : public AnimationTimelinesTest {
  public:
   ElementAnimationsTest() {}
@@ skipping 187 matching lines @@
        node = node->next()) {
     const AnimationPlayer* player_impl = node->value();
     EXPECT_TRUE(timeline_->GetPlayerById(player_impl->id()));
     ++list_size_after;
   }
   EXPECT_EQ(2, list_size_after);
 }
 
 }  // namespace
 }  // namespace cc