Add SkColorSpace to GrDrawContext

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2164363002

Review-Url: https://codereview.chromium.org/2164363002
diff --git a/src/gpu/GrClipMaskManager.cpp b/src/gpu/GrClipMaskManager.cpp
index 77d5ea1..6e2a303 100644
--- a/src/gpu/GrClipMaskManager.cpp
+++ b/src/gpu/GrClipMaskManager.cpp
@@ -474,7 +474,7 @@
     sk_sp<GrDrawContext> dc(context->newDrawContext(SkBackingFit::kApprox,
                                                     clipSpaceIBounds.width(),
                                                     clipSpaceIBounds.height(),
-                                                    config));
+                                                    config, nullptr));
     if (!dc) {
         return nullptr;
     }