Add layer name to screen capture's background fill layer

This name will be traced when rendering the layer in RenderEngine.

Bug: N/A
Test: presubmit
Flag: EXEMPT trivial debug tracing
Change-Id: Iad4d9284100bc90800bcc504a068edc09d572d04
diff --git a/services/surfaceflinger/ScreenCaptureOutput.cpp b/services/surfaceflinger/ScreenCaptureOutput.cpp
index 7123905..af6d4d3 100644
--- a/services/surfaceflinger/ScreenCaptureOutput.cpp
+++ b/services/surfaceflinger/ScreenCaptureOutput.cpp
@@ -209,6 +209,7 @@
     }
 
     compositionengine::LayerFE::LayerSettings fillLayer;
+    fillLayer.name = "ScreenCaptureFillLayer";
     fillLayer.source.buffer.buffer = nullptr;
     fillLayer.source.solidColor = half3(0.0f, 0.0f, 0.0f);
     fillLayer.geometry.boundaries =