Add SkColorSpace to GrDrawContext

src/gpu/GrClipMaskManager.cpp

Index: src/gpu/GrClipMaskManager.cpp
diff --git a/src/gpu/GrClipMaskManager.cpp b/src/gpu/GrClipMaskManager.cpp
index 77d5ea1d03fcc30c47ba42f3d7085cb3d236ec9a..6e2a30384415d8d2a8a1769b9c841d2cf3038e8d 100644
--- a/src/gpu/GrClipMaskManager.cpp
+++ b/src/gpu/GrClipMaskManager.cpp
@@ -474,7 +474,7 @@ sk_sp<GrTexture> GrClipMaskManager::CreateAlphaClipMask(GrContext* context,
     sk_sp<GrDrawContext> dc(context->newDrawContext(SkBackingFit::kApprox,
                                                     clipSpaceIBounds.width(),
                                                     clipSpaceIBounds.height(),
-                                                    config));
+                                                    config, nullptr));
     if (!dc) {
         return nullptr;
     }