Update Layer::GetTargetColor to account for animation state

ui/compositor/layer.cc

Index: ui/compositor/layer.cc
diff --git a/ui/compositor/layer.cc b/ui/compositor/layer.cc
index c1347c4e36cc9456d3aa243e22e462505f1fa95a..73cd1d1a9790112d76ee7afd130ae9c72989feb4 100644
--- a/ui/compositor/layer.cc
+++ b/ui/compositor/layer.cc
@@ -653,7 +653,9 @@ void Layer::UpdateNinePatchLayerBorder(const gfx::Rect& border) {
 void Layer::SetColor(SkColor color) { GetAnimator()->SetColor(color); }
 
 SkColor Layer::GetTargetColor() {
-  return GetAnimator()->GetTargetColor();
+  if (GetAnimator()->IsAnimatingProperty(LayerAnimationElement::COLOR))
+    return GetAnimator()->GetTargetColor();
+  return cc_layer_->background_color();
 }
 
 SkColor Layer::background_color() const {