One signature for creating unit tests that run on premade GrContexts

tests/CopySurfaceTest.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.
  */
 
 #include <initializer_list>
 #include "Test.h"
 
 #if SK_SUPPORT_GPU
 #include "GrContext.h"
 #include "GrTexture.h"
 #include "GrTextureProvider.h"
 
 #include "SkUtils.h"
 
-DEF_GPUTEST_FOR_RENDERING_CONTEXTS(CopySurface, reporter, context) {
+DEF_GPUTEST_FOR_RENDERING_CONTEXTS(CopySurface, reporter, ctxInfo) {
+    GrContext* context = ctxInfo.fGrContext;
     static const int kW = 10;
     static const int kH = 10;
     static const size_t kRowBytes = sizeof(uint32_t) * kW;
 
     GrSurfaceDesc baseDesc;
     baseDesc.fConfig = kRGBA_8888_GrPixelConfig;
     baseDesc.fWidth = kW;
     baseDesc.fHeight = kH;
 
     SkAutoTMalloc<uint32_t> srcPixels(kW * kH);
@@ skipping 125 matching lines @@
                                 }
                             }
                         }
                     }
                 }
             }
         }
     }
 }
 #endif