Turn ContextInfos returned by GrContextFactory into structs.

tests/WritePixelsTest.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkCanvas.h"
 #include "SkColorPriv.h"
 #include "SkMathPriv.h"
@@ skipping 397 matching lines @@
 #if SK_SUPPORT_GPU
 DEF_GPUTEST_FOR_GL_RENDERING_CONTEXTS(WritePixels_Gpu, reporter, ctxInfo) {
     for (auto& origin : { kTopLeft_GrSurfaceOrigin, kBottomLeft_GrSurfaceOrigin }) {
         GrSurfaceDesc desc;
         desc.fFlags = kRenderTarget_GrSurfaceFlag;
         desc.fWidth = DEV_W;
         desc.fHeight = DEV_H;
         desc.fConfig = kSkia8888_GrPixelConfig;
         desc.fOrigin = origin;
         SkAutoTUnref<GrTexture> texture(
-            ctxInfo.fGrContext->textureProvider()->createTexture(desc, SkBudgeted::kNo));
+            ctxInfo.grContext()->textureProvider()->createTexture(desc, SkBudgeted::kNo));
         auto surface(SkSurface::MakeRenderTargetDirect(texture->asRenderTarget()));
         test_write_pixels(reporter, surface.get());
     }
 }
 #endif