SF: Set blur radius in winscope trace

Test: Run winscope trace while activating blur (pull down status bar).
      Result https://screenshot.googleplex.com/dPPANE5oUTy
Change-Id: I9b6638b3708a6561575e8096633d34b0e9906142
diff --git a/services/surfaceflinger/Layer.cpp b/services/surfaceflinger/Layer.cpp
index 5039761..a83d0a7 100644
--- a/services/surfaceflinger/Layer.cpp
+++ b/services/surfaceflinger/Layer.cpp
@@ -2178,6 +2178,7 @@
         layerInfo->set_effective_scaling_mode(getEffectiveScalingMode());
 
         layerInfo->set_corner_radius(getRoundedCornerState().radius);
+        layerInfo->set_background_blur_radius(getBackgroundBlurRadius());
         LayerProtoHelper::writeToProto(transform, layerInfo->mutable_transform());
         LayerProtoHelper::writePositionToProto(transform.tx(), transform.ty(),
                                                [&]() { return layerInfo->mutable_position(); });