Start using GrGpuCommandBuffer in GrDrawTarget.

tests/VkUploadPixelsTests.cpp

 /*
  * Copyright 2015 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 34 matching lines @@
         }
         srcPtr += width;
         dstPtr += width;
     }
     return true;
 }
 
 void basic_texture_test(skiatest::Reporter* reporter, GrContext* context, GrPixelConfig config,
                         bool renderTarget, bool linearTiling) {
     GrVkGpu* gpu = static_cast<GrVkGpu*>(context->getGpu());
-    gpu->discard(NULL);
 
     const int kWidth = 16;
     const int kHeight = 16;
     SkAutoTMalloc<GrColor> srcBuffer(kWidth*kHeight);
     SkAutoTMalloc<GrColor> dstBuffer(kWidth*kHeight);
 
     fill_pixel_data(kWidth, kHeight, srcBuffer.get());
 
     const GrVkCaps* caps = reinterpret_cast<const GrVkCaps*>(context->caps());
 
@@ skipping 72 matching lines @@
     basic_texture_test(reporter, ctxInfo.grContext(), kRGBA_8888_GrPixelConfig, true, false);
     basic_texture_test(reporter, ctxInfo.grContext(), kRGBA_8888_GrPixelConfig, false, true);
     basic_texture_test(reporter, ctxInfo.grContext(), kRGBA_8888_GrPixelConfig, true, true);
     basic_texture_test(reporter, ctxInfo.grContext(), kBGRA_8888_GrPixelConfig, false, false);
     basic_texture_test(reporter, ctxInfo.grContext(), kBGRA_8888_GrPixelConfig, true, false);
     basic_texture_test(reporter, ctxInfo.grContext(), kBGRA_8888_GrPixelConfig, false, true);
     basic_texture_test(reporter, ctxInfo.grContext(), kBGRA_8888_GrPixelConfig, true, true);
 }
 
 #endif