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/tests/SpecialSurfaceTest.cpp b/tests/SpecialSurfaceTest.cpp
index 40de08d..3c6de0a 100644
--- a/tests/SpecialSurfaceTest.cpp
+++ b/tests/SpecialSurfaceTest.cpp
@@ -12,7 +12,9 @@
 #include "Test.h"
 
 #if SK_SUPPORT_GPU
+#include "GrCaps.h"
 #include "GrContext.h"
+#include "GrContextPriv.h"
 #include "SkGr.h"
 #endif
 
@@ -81,7 +83,7 @@
 
 DEF_GPUTEST_FOR_RENDERING_CONTEXTS(SpecialSurface_Gpu1, reporter, ctxInfo) {
     for (auto config : { kRGBA_8888_GrPixelConfig, kRGBA_1010102_GrPixelConfig }) {
-        if (!ctxInfo.grContext()->caps()->isConfigRenderable(config)) {
+        if (!ctxInfo.grContext()->contextPriv().caps()->isConfigRenderable(config)) {
             continue;
         }
         sk_sp<SkSpecialSurface> surf(SkSpecialSurface::MakeRenderTarget(ctxInfo.grContext(),