One signature for creating unit tests that run on premade GrContexts

tests/PrimitiveProcessorTest.cpp

 /*
  * Copyright 2016 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 // This is a GPU-backend specific test. It relies on static intializers to work
 
 #include "SkTypes.h"
@@ skipping 83 matching lines @@
         vertices->setRectFan(0.f, 0.f, 1.f, 1.f, vertexStride);
         helper.recordDraw(target, gp);
     }
 
     int fNumAttribs;
 
     typedef GrVertexBatch INHERITED;
 };
 }
 
-DEF_GPUTEST_FOR_ALL_CONTEXTS(VertexAttributeCount, reporter, context) {
+DEF_GPUTEST_FOR_ALL_CONTEXTS(VertexAttributeCount, reporter, ctxInfo) {
+    GrContext* context = ctxInfo.fGrContext;
     GrTextureDesc desc;
     desc.fHeight = 1;
     desc.fWidth = 1;
     desc.fFlags = kRenderTarget_GrSurfaceFlag;
     desc.fConfig = kRGBA_8888_GrPixelConfig;
     SkAutoTUnref<GrTexture> target(context->textureProvider()->createTexture(desc,
                                                                              SkBudgeted::kYes));
     if (!target) {
         ERRORF(reporter, "Could not create render target.");
         return;
@@ skipping 29 matching lines @@
     // This one should fail.
     batch.reset(new Batch(attribCnt+1));
     dc->drawContextPriv().testingOnly_drawBatch(pb, batch);
     context->flush();
 #if GR_GPU_STATS
     REPORTER_ASSERT(reporter, context->getGpu()->stats()->numDraws() == 0);
     REPORTER_ASSERT(reporter, context->getGpu()->stats()->numFailedDraws() == 1);
 #endif
 }
 #endif