Remove GrWrapTextureInBitmap from public API

src/gpu/SkGrPriv.h

Index: src/gpu/SkGrPriv.h
diff --git a/src/gpu/SkGrPriv.h b/src/gpu/SkGrPriv.h
index ab77dc1e79a2004e7dd23bbf88f59ab92b7dab63..b38ce362c10a940376b852c28bef46f204a298d1 100644
--- a/src/gpu/SkGrPriv.h
+++ b/src/gpu/SkGrPriv.h
@@ -100,6 +100,13 @@ bool SkPaintToGrPaintWithTexture(GrContext* context,
 
 //////////////////////////////////////////////////////////////////////////////
 
+// Using the dreaded SkGrPixelRef ...
+void GrWrapTextureInBitmap(GrTexture* src, int w, int h, bool isOpaque,
+                           SkBitmap* dst);
+
+
+//////////////////////////////////////////////////////////////////////////////
+
 GrSurfaceDesc GrImageInfoToSurfaceDesc(const SkImageInfo&, const GrCaps&);
 
 bool GrPixelConfigToColorAndColorSpace(GrPixelConfig, SkColorType*, sk_sp<SkColorSpace>*);