Add SkColorSpace to GrDrawContext

src/effects/SkDisplacementMapEffect.cpp

Index: src/effects/SkDisplacementMapEffect.cpp
diff --git a/src/effects/SkDisplacementMapEffect.cpp b/src/effects/SkDisplacementMapEffect.cpp
index 392ac43cceaa7c8cd956fb53f56b79ed25cc958c..9370a9fc932e9b027eca84477dbd869a94052a34 100644
--- a/src/effects/SkDisplacementMapEffect.cpp
+++ b/src/effects/SkDisplacementMapEffect.cpp
@@ -335,9 +335,9 @@ sk_sp<SkSpecialImage> SkDisplacementMapEffect::onFilterImage(SkSpecialImage* sou
         SkMatrix matrix;
         matrix.setTranslate(-SkIntToScalar(colorBounds.x()), -SkIntToScalar(colorBounds.y()));
 
-        sk_sp<GrDrawContext> drawContext(context->newDrawContext(SkBackingFit::kApprox,
-                                                                 bounds.width(), bounds.height(),
-                                                                 kSkia8888_GrPixelConfig));
+        sk_sp<GrDrawContext> drawContext(
+            context->newDrawContext(SkBackingFit::kApprox, bounds.width(), bounds.height(),
+                                    kSkia8888_GrPixelConfig, sk_ref_sp(source->getColorSpace())));
         if (!drawContext) {
             return nullptr;
         }
@@ -346,11 +346,10 @@ sk_sp<SkSpecialImage> SkDisplacementMapEffect::onFilterImage(SkSpecialImage* sou
 
         offset->fX = bounds.left();
         offset->fY = bounds.top();
-        // TODO: Get the colorSpace from the drawContext (once it has one)
         return SkSpecialImage::MakeFromGpu(SkIRect::MakeWH(bounds.width(), bounds.height()),
                                            kNeedNewImageUniqueID_SpecialImage,
                                            drawContext->asTexture(),
-                                           sk_ref_sp(source->getColorSpace()));
+                                           sk_ref_sp(drawContext->getColorSpace()));
     }
 #endif