Rename GrContext::contextPriv to priv

Mechanical. This makes the priv() accessor the same for all the context types.

Change-Id: I40850eb05a33b8d7cc3eabdd42226d24b2ba58aa
Reviewed-on: https://skia-review.googlesource.com/c/189164
Commit-Queue: Robert Phillips <robertphillips@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
diff --git a/src/gpu/GrRenderTargetContext.h b/src/gpu/GrRenderTargetContext.h
index 07b52f0..f1e45bd 100644
--- a/src/gpu/GrRenderTargetContext.h
+++ b/src/gpu/GrRenderTargetContext.h
@@ -378,7 +378,7 @@
     void insertEventMarker(const SkString&);
 
     GrFSAAType fsaaType() const { return fRenderTargetProxy->fsaaType(); }
-    const GrCaps* caps() const { return fContext->contextPriv().caps(); }
+    const GrCaps* caps() const { return fContext->priv().caps(); }
     int width() const { return fRenderTargetProxy->width(); }
     int height() const { return fRenderTargetProxy->height(); }
     int numColorSamples() const { return fRenderTargetProxy->numColorSamples(); }
@@ -395,7 +395,7 @@
     GrRenderTarget* accessRenderTarget() {
         // TODO: usage of this entry point needs to be reduced and potentially eliminated
         // since it ends the deferral of the GrRenderTarget's allocation
-        if (!fRenderTargetProxy->instantiate(fContext->contextPriv().resourceProvider())) {
+        if (!fRenderTargetProxy->instantiate(fContext->priv().resourceProvider())) {
             return nullptr;
         }
         return fRenderTargetProxy->peekRenderTarget();