Make GrSamplerState.h and GrRenderTarget.h private

Change-Id: Id7a270f5a528e1a4a6d94474fa092545252753b3
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/234667
Commit-Queue: Robert Phillips <robertphillips@google.com>
Reviewed-by: Robert Phillips <robertphillips@google.com>
diff --git a/src/gpu/GrProcessor.cpp b/src/gpu/GrProcessor.cpp
index e545933..251914c 100644
--- a/src/gpu/GrProcessor.cpp
+++ b/src/gpu/GrProcessor.cpp
@@ -6,12 +6,12 @@
  */
 
 #include "include/gpu/GrContext.h"
-#include "include/gpu/GrSamplerState.h"
 #include "include/private/SkSpinlock.h"
 #include "src/gpu/GrContextPriv.h"
 #include "src/gpu/GrGeometryProcessor.h"
 #include "src/gpu/GrMemoryPool.h"
 #include "src/gpu/GrProcessor.h"
+#include "src/gpu/GrSamplerState.h"
 #include "src/gpu/GrTextureProxy.h"
 #include "src/gpu/GrXferProcessor.h"