Move GrContext::makeDrawContext to new GrContextPriv object

tests/RectangleTextureTest.cpp

Index: tests/RectangleTextureTest.cpp
diff --git a/tests/RectangleTextureTest.cpp b/tests/RectangleTextureTest.cpp
index 2dbb8884257f833dba281e8f60f853b9b59ed8ea..a21b5a2f63364de4fd1c43e5ba4dd53d9e263809 100644
--- a/tests/RectangleTextureTest.cpp
+++ b/tests/RectangleTextureTest.cpp
@@ -8,6 +8,7 @@
 #include "Test.h"
 #if SK_SUPPORT_GPU
 #include "GrContext.h"
+#include "GrContextPriv.h"
 #include "GrDrawContext.h"
 #include "gl/GrGLGpu.h"
 #include "gl/GrGLUtil.h"
@@ -89,9 +90,9 @@ static void test_copy_surface_dst(skiatest::Reporter* reporter, GrContext* conte
 static void test_clear(skiatest::Reporter* reporter, GrContext* context,
                        GrTexture* rectangleTexture) {
     if (rectangleTexture->asRenderTarget()) {
-        sk_sp<GrDrawContext> dc(
-                            context->makeDrawContext(sk_ref_sp(rectangleTexture->asRenderTarget()),
-                                                     nullptr));
+        sk_sp<GrDrawContext> dc(context->contextPriv().makeWrappedDrawContext(
+                                                    sk_ref_sp(rectangleTexture->asRenderTarget()),
+                                                    nullptr));
         if (!dc) {
             ERRORF(reporter, "Could not get GrDrawContext for rectangle texture.");
             return;