Make GrCaps and GrShaderCaps private.

Moves getCaps() from GrContext to GrContextPriv and removes unused refCaps().

Change-Id: Ic6a8951b656c0d1b2773eae73bff8e88af819866
Reviewed-on: https://skia-review.googlesource.com/127389
Commit-Queue: Brian Salomon <bsalomon@google.com>
Reviewed-by: Greg Daniel <egdaniel@google.com>
diff --git a/src/gpu/GrImageTextureMaker.cpp b/src/gpu/GrImageTextureMaker.cpp
index 5bf81d2..920415f 100644
--- a/src/gpu/GrImageTextureMaker.cpp
+++ b/src/gpu/GrImageTextureMaker.cpp
@@ -6,12 +6,12 @@
  */
 
 #include "GrImageTextureMaker.h"
-
 #include "GrContext.h"
+#include "GrContextPriv.h"
 #include "GrGpuResourcePriv.h"
 #include "SkGr.h"
-#include "SkImage_Base.h"
 #include "SkImageCacherator.h"
+#include "SkImage_Base.h"
 #include "SkPixelRef.h"
 
 GrImageTextureMaker::GrImageTextureMaker(GrContext* context, const SkImage* client,
@@ -36,7 +36,7 @@
                                       SkColorSpace* dstColorSpace) {
     if (fOriginalKey.isValid() && SkImage::kAllow_CachingHint == fCachingHint) {
         SkImageCacherator::CachedFormat cacheFormat =
-            fCacher->chooseCacheFormat(dstColorSpace, this->context()->caps());
+                fCacher->chooseCacheFormat(dstColorSpace, this->context()->contextPriv().caps());
         GrUniqueKey cacheKey;
         fCacher->makeCacheKeyFromOrigKey(fOriginalKey, cacheFormat, &cacheKey);
         MakeCopyKeyFromOrigKey(cacheKey, stretch, paramsCopyKey);