sRGB cleanup in image filters. Ensure we configure paints correctly.

src/effects/SkDisplacementMapEffect.cpp

Index: src/effects/SkDisplacementMapEffect.cpp
diff --git a/src/effects/SkDisplacementMapEffect.cpp b/src/effects/SkDisplacementMapEffect.cpp
index 8fc0ec1366c877bcdfdc02842cfa95558aa906a8..8d068072a7454dd0f1f914ecdcae587d86b815f7 100644
--- a/src/effects/SkDisplacementMapEffect.cpp
+++ b/src/effects/SkDisplacementMapEffect.cpp
@@ -344,6 +344,7 @@ sk_sp<SkSpecialImage> SkDisplacementMapEffect::onFilterImage(SkSpecialImage* sou
         if (!drawContext) {
             return nullptr;
         }
+        paint.setGammaCorrect(drawContext->isGammaCorrect());
 
         drawContext->drawRect(GrNoClip(), paint, matrix, SkRect::Make(colorBounds));