Make GM::onGpuSetup take a GrDirectContext

This should, hopefully, clarify the role of onGpuSetup vis a vis onDraw.

The remaining tools are updated in:
https://skia-review.googlesource.com/c/skia/+/300220/ (Update remaining tools to GrDirectContext)

Change-Id: I19d6eec4d16cb9ebad8924763a18225cc871f0f2
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/300172
Reviewed-by: Adlai Holler <adlai@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>

dm/DMGpuTestProcs.cpp

diff --git a/dm/DMGpuTestProcs.cpp b/dm/DMGpuTestProcs.cpp
index e9369d5..6c3eb4c 100644
--- a/dm/DMGpuTestProcs.cpp
+++ b/dm/DMGpuTestProcs.cpp
@@ -7,6 +7,8 @@
 
 #include "tests/Test.h"
 
+#include "include/gpu/GrDirectContext.h"
+
 using sk_gpu_test::GrContextFactory;
 using sk_gpu_test::GLTestContext;
 using sk_gpu_test::ContextInfo;
@@ -65,12 +67,12 @@
         }
 
         ReporterContext ctx(reporter, SkString(GrContextFactory::ContextTypeName(contextType)));
-        if (ctxInfo.grContext()) {
+        if (ctxInfo.directContext()) {
             (*test)(reporter, ctxInfo);
             // In case the test changed the current context make sure we move it back before
             // calling flush.
             ctxInfo.testContext()->makeCurrent();
-            ctxInfo.grContext()->flushAndSubmit();
+            ctxInfo.directContext()->flushAndSubmit();
         }
     }
 }