CC Animation: Erase AnimationRegistrar

cc/trees/layer_tree_host_impl.cc

 // Copyright 2011 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/trees/layer_tree_host_impl.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 264 matching lines @@
       TRACE_DISABLED_BY_DEFAULT("cc.debug"), "cc::LayerTreeHostImpl", id_);
 
   if (input_handler_client_) {
     input_handler_client_->WillShutdown();
     input_handler_client_ = NULL;
   }
   if (scroll_elasticity_helper_)
     scroll_elasticity_helper_.reset();
 
   // The layer trees must be destroyed before the layer tree host. We've
-  // made a contract with our animation controllers that the registrar
+  // made a contract with our animation controllers that the animation_host
   // will outlive them, and we must make good.
   if (recycle_tree_)
     recycle_tree_->Shutdown();
   if (pending_tree_)
     pending_tree_->Shutdown();
   active_tree_->Shutdown();
   recycle_tree_ = nullptr;
   pending_tree_ = nullptr;
   active_tree_ = nullptr;
 
@@ skipping 3154 matching lines @@
   return animated;
 }
 
 bool LayerTreeHostImpl::AnimateLayers(base::TimeTicks monotonic_time) {
   const bool animated = animation_host_->AnimateLayers(monotonic_time);
 
   // TODO(crbug.com/551134): Only do this if the animations are on the active
   // tree, or if they are on the pending tree waiting for some future time to
   // start.
   // TODO(crbug.com/551138): We currently have a single signal from the
-  // animation host/registrar, so on the last frame of an animation we will
+  // animation_host, so on the last frame of an animation we will
   // still request an extra SetNeedsAnimate here.
   if (animated)
     SetNeedsOneBeginImplFrame();
   // TODO(crbug.com/551138): We could return true only if the animations are on
   // the active tree. There's no need to cause a draw to take place from
   // animations starting/ticking on the pending tree.
   return animated;
 }
 
 void LayerTreeHostImpl::UpdateAnimationState(bool start_ready_animations) {
@@ skipping 505 matching lines @@
   return task_runner_provider_->HasImplThread();
 }
 
 bool LayerTreeHostImpl::CommitToActiveTree() const {
   // In single threaded mode we skip the pending tree and commit directly to the
   // active tree.
   return !task_runner_provider_->HasImplThread();
 }
 
 }  // namespace cc