cc: Delete unused AnimationCurve::AffectsScale and related code

cc/animation/keyframed_animation_curve.cc

 // Copyright 2012 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/keyframed_animation_curve.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 
@@ skipping 364 matching lines @@
                                                       keyframes_[i]->Value(),
                                                       min_progress,
                                                       max_progress,
                                                       &bounds_for_step))
       return false;
     bounds->Union(bounds_for_step);
   }
   return true;
 }
 
-bool KeyframedTransformAnimationCurve::AffectsScale() const {
-  for (size_t i = 0; i < keyframes_.size(); ++i) {
-    if (keyframes_[i]->Value().AffectsScale())
-      return true;
-  }
-  return false;
-}
-
 bool KeyframedTransformAnimationCurve::PreservesAxisAlignment() const {
   for (size_t i = 0; i < keyframes_.size(); ++i) {
     if (!keyframes_[i]->Value().PreservesAxisAlignment())
       return false;
   }
   return true;
 }
 
 bool KeyframedTransformAnimationCurve::IsTranslation() const {
   for (size_t i = 0; i < keyframes_.size(); ++i) {
@@ skipping 106 matching lines @@
 bool KeyframedFilterAnimationCurve::HasFilterThatMovesPixels() const {
   for (size_t i = 0; i < keyframes_.size(); ++i) {
     if (keyframes_[i]->Value().HasFilterThatMovesPixels()) {
       return true;
     }
   }
   return false;
 }
 
 }  // namespace cc