Animation start scale should be considered for the raster scale

ui/compositor/transform_animation_curve_adapter.cc

 // Copyright (c) 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 "ui/compositor/transform_animation_curve_adapter.h"
 
 #include "cc/base/time_util.h"
 
 namespace ui {
 
@@ skipping 57 matching lines @@
   return initial_value_.IsIdentityOrTranslation() &&
          target_value_.IsIdentityOrTranslation();
 }
 
 bool TransformAnimationCurveAdapter::PreservesAxisAlignment() const {
   return (initial_value_.IsIdentity() ||
           initial_value_.IsScaleOrTranslation()) &&
          (target_value_.IsIdentity() || target_value_.IsScaleOrTranslation());
 }
 
+bool TransformAnimationCurveAdapter::AnimationStartScale(
+    bool forward_direction,
+    float* start_scale) const {
+  return false;
+}
+
 bool TransformAnimationCurveAdapter::MaximumTargetScale(
     bool forward_direction,
     float* max_scale) const {
   return false;
 }
 
 InverseTransformCurveAdapter::InverseTransformCurveAdapter(
     TransformAnimationCurveAdapter base_curve,
     gfx::Transform initial_value,
     base::TimeDelta duration)
@@ skipping 48 matching lines @@
   return initial_value_.IsIdentityOrTranslation() &&
          base_curve_.IsTranslation();
 }
 
 bool InverseTransformCurveAdapter::PreservesAxisAlignment() const {
   return (initial_value_.IsIdentity() ||
           initial_value_.IsScaleOrTranslation()) &&
          (base_curve_.PreservesAxisAlignment());
 }
 
+bool InverseTransformCurveAdapter::AnimationStartScale(
+    bool forward_direction,
+    float* start_scale) const {
+  return false;
+}
+
 bool InverseTransformCurveAdapter::MaximumTargetScale(bool forward_direction,
                                                       float* max_scale) const {
   return false;
 }
 
 }  // namespace ui