CC Animation: Remove Observers and Observations in namings.

cc/animation/animation_host.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/animation_host.h"
 
 #include <algorithm>
 
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
@@ skipping 212 matching lines @@
   scoped_refptr<ElementAnimations> element_animations =
       GetElementAnimationsForLayerId(layer_id);
   if (!element_animations) {
     element_animations = ElementAnimations::Create();
     element_animations->SetLayerId(layer_id);
     RegisterElementAnimations(element_animations.get());
   }
 
   if (element_animations->animation_host() != this) {
     element_animations->SetAnimationHost(this);
-    element_animations->InitValueObservations();
+    element_animations->InitAffectedElementTypes();
   }
 
   element_animations->AddPlayer(player);
 }
 
 void AnimationHost::UnregisterPlayerForLayer(int layer_id,
                                              AnimationPlayer* player) {
   DCHECK(layer_id);
   DCHECK(player);
 
   scoped_refptr<ElementAnimations> element_animations =
       GetElementAnimationsForLayerId(layer_id);
   DCHECK(element_animations);
   element_animations->RemovePlayer(player);
 
   if (element_animations->IsEmpty()) {
-    element_animations->ClearValueObservations();
+    element_animations->ClearAffectedElementTypes();
     UnregisterElementAnimations(element_animations.get());
     element_animations->SetAnimationHost(nullptr);
   }
 }
 
 void AnimationHost::SetMutatorHostClient(MutatorHostClient* client) {
   if (mutator_host_client_ == client)
     return;
 
   mutator_host_client_ = client;
@@ skipping 430 matching lines @@
 const AnimationHost::LayerToElementAnimationsMap&
 AnimationHost::all_element_animations_for_testing() const {
   return layer_to_element_animations_map_;
 }
 
 void AnimationHost::OnAnimationWaitingForDeletion() {
   animation_waiting_for_deletion_ = true;
 }
 
 }  // namespace cc