Turn ContextInfos returned by GrContextFactory into structs.
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1966013002

Review-Url: https://codereview.chromium.org/1966013002
diff --git a/tests/GrSurfaceTest.cpp b/tests/GrSurfaceTest.cpp
index a7b64b7..e61b934 100644
--- a/tests/GrSurfaceTest.cpp
+++ b/tests/GrSurfaceTest.cpp
@@ -19,7 +19,7 @@
 // Tests that GrSurface::asTexture(), GrSurface::asRenderTarget(), and static upcasting of texture
 // and render targets to GrSurface all work as expected.
 DEF_GPUTEST_FOR_NULLGL_CONTEXT(GrSurface, reporter, ctxInfo) {
-    GrContext* context = ctxInfo.fGrContext;
+    GrContext* context = ctxInfo.grContext();
     GrSurfaceDesc desc;
     desc.fConfig = kSkia8888_GrPixelConfig;
     desc.fFlags = kRenderTarget_GrSurfaceFlag;