Animation start scale should be considered for the raster scale

ui/compositor/transform_animation_curve_adapter.h

Index: ui/compositor/transform_animation_curve_adapter.h
diff --git a/ui/compositor/transform_animation_curve_adapter.h b/ui/compositor/transform_animation_curve_adapter.h
index ba88c5969d5d860b095d827fc602cde025c14c81..5713bad1d49311f5a3a3fa08f4c97ad1a1354d8f 100644
--- a/ui/compositor/transform_animation_curve_adapter.h
+++ b/ui/compositor/transform_animation_curve_adapter.h
@@ -33,6 +33,8 @@ class COMPOSITOR_EXPORT TransformAnimationCurveAdapter
   bool AffectsScale() const override;
   bool IsTranslation() const override;
   bool PreservesAxisAlignment() const override;
+  bool AnimationStartScale(bool forward_direction,
+                           float* start_scale) const override;
   bool MaximumTargetScale(bool forward_direction,
                           float* max_scale) const override;
 
@@ -64,6 +66,8 @@ class COMPOSITOR_EXPORT InverseTransformCurveAdapter
   bool AffectsScale() const override;
   bool IsTranslation() const override;
   bool PreservesAxisAlignment() const override;
+  bool AnimationStartScale(bool forward_direction,
+                           float* start_scale) const override;
   bool MaximumTargetScale(bool forward_direction,
                           float* max_scale) const override;