cc: Delete unused AnimationCurve::AffectsScale and related code

cc/animation/element_animations.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 <stddef.h>
 
 #include <algorithm>
 
@@ skipping 366 matching lines @@
   while ((player = it.GetNext()) != nullptr) {
     gfx::BoxF player_bounds;
     bool success = player->TransformAnimationBoundsForBox(box, &player_bounds);
     if (!success)
       return false;
     bounds->Union(player_bounds);
   }
   return true;
 }
 
-bool ElementAnimations::HasAnimationThatAffectsScale() const {
-  ElementAnimations::PlayersList::Iterator it(players_list_.get());
-  AnimationPlayer* player;
-  while ((player = it.GetNext()) != nullptr) {
-    if (player->HasAnimationThatAffectsScale())
-      return true;
-  }
-  return false;
-}
-
 bool ElementAnimations::HasOnlyTranslationTransforms(
     ElementListType list_type) const {
   ElementAnimations::PlayersList::Iterator it(players_list_.get());
   AnimationPlayer* player;
   while ((player = it.GetNext()) != nullptr) {
     if (!player->HasOnlyTranslationTransforms(list_type))
       return false;
   }
   return true;
 }
@@ skipping 456 matching lines @@
   if (animation_host()) {
     DCHECK(animation_host()->mutator_host_client());
     return animation_host()->mutator_host_client()->GetScrollOffsetForAnimation(
         element_id());
   }
 
   return gfx::ScrollOffset();
 }
 
 }  // namespace cc