StretchEffect changes

Bug: 179047472
Test: StretchySurfaceViewActivity in HwAccelerationTests
Change-Id: Ia1fcd6136a380bb7099fae08ceb024eae4f79ac8
diff --git a/services/surfaceflinger/CompositionEngine/src/LayerFECompositionState.cpp b/services/surfaceflinger/CompositionEngine/src/LayerFECompositionState.cpp
index 1338538..430945a 100644
--- a/services/surfaceflinger/CompositionEngine/src/LayerFECompositionState.cpp
+++ b/services/surfaceflinger/CompositionEngine/src/LayerFECompositionState.cpp
@@ -74,6 +74,9 @@
     dumpVal(out, "blend", toString(blendMode), blendMode);
     dumpVal(out, "alpha", alpha);
     dumpVal(out, "backgroundBlurRadius", backgroundBlurRadius);
+    if (stretchEffect.hasEffect()) {
+        dumpVal(out, "stretchEffect", stretchEffect);
+    }
 
     if (!metadata.empty()) {
         out.append("\n      metadata {");