Rename GrContextPriv to GrDirectContextPriv

Change-Id: I3fccadd8a2860dbee73f93f995738146373f8a39
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/326196
Commit-Queue: Adlai Holler <adlai@google.com>
Auto-Submit: Adlai Holler <adlai@google.com>
Reviewed-by: Robert Phillips <robertphillips@google.com>
diff --git a/gm/sample_matrix_variable.cpp b/gm/sample_matrix_variable.cpp
index 4932460..e28d90c 100644
--- a/gm/sample_matrix_variable.cpp
+++ b/gm/sample_matrix_variable.cpp
@@ -9,7 +9,7 @@
 #include "include/effects/SkGradientShader.h"
 #include "src/core/SkMatrixProvider.h"
 #include "src/gpu/GrBitmapTextureMaker.h"
-#include "src/gpu/GrContextPriv.h"
+#include "src/gpu/GrDirectContextPriv.h"
 #include "src/gpu/GrRenderTargetContextPriv.h"
 #include "src/gpu/glsl/GrGLSLFragmentShaderBuilder.h"
 #include "src/gpu/ops/GrFillRectOp.h"