Remove GrContextPriv.h from GrRenderTargetContext.h

Change-Id: Ib3afe6d8f2f9607eededb4dd4ef9dbe305741cfb
Reviewed-on: https://skia-review.googlesource.com/c/192829
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
diff --git a/src/gpu/vk/GrVkGpuCommandBuffer.cpp b/src/gpu/vk/GrVkGpuCommandBuffer.cpp
index ac20430..cc6758e 100644
--- a/src/gpu/vk/GrVkGpuCommandBuffer.cpp
+++ b/src/gpu/vk/GrVkGpuCommandBuffer.cpp
@@ -8,6 +8,7 @@
 #include "GrVkGpuCommandBuffer.h"
 
 #include "GrBackendDrawableInfo.h"
+#include "GrContextPriv.h"
 #include "GrFixedClip.h"
 #include "GrMesh.h"
 #include "GrOpFlushState.h"