[Merge to M60] Cloning a ui::Layer should also clone its target temperature

ui/compositor/layer.cc

Index: ui/compositor/layer.cc
diff --git a/ui/compositor/layer.cc b/ui/compositor/layer.cc
index 8e6138549251fe4adfee427cd6283498c2d8af42..b4a5242be760fd4a3f34e9f0107ffe901440f82f 100644
--- a/ui/compositor/layer.cc
+++ b/ui/compositor/layer.cc
@@ -169,6 +169,7 @@ std::unique_ptr<Layer> Layer::Clone() const {
   clone->SetBackgroundZoom(zoom_, zoom_inset_);
 
   // Filters.
+  clone->SetLayerTemperature(GetTargetTemperature());
   clone->SetLayerSaturation(layer_saturation_);
   clone->SetLayerBrightness(GetTargetBrightness());
   clone->SetLayerGrayscale(GetTargetGrayscale());
@@ -382,6 +383,14 @@ void Layer::SetLayerTemperature(float value) {
   GetAnimator()->SetTemperature(value);
 }
 
+float Layer::GetTargetTemperature() const {
+  if (animator_ &&
+      animator_->IsAnimatingProperty(LayerAnimationElement::TEMPERATURE)) {
+    return animator_->GetTargetTemperature();
+  }
+  return layer_temperature();
+}
+
 void Layer::SetBackgroundBlur(int blur_radius) {
   background_blur_radius_ = blur_radius;