Fix Vulkan tests after GrContextFactory move to sk_gpu_test

tests/VkWrapTests.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"
 
 #if SK_SUPPORT_GPU && SK_ALLOW_STATIC_GLOBAL_INITIALIZERS && defined(SK_VULKAN)
 
 #include "GrContextFactory.h"
 #include "GrTest.h"
 #include "Test.h"
 #include "vk/GrVkCaps.h"
 #include "vk/GrVkGpu.h"
 #include "vk/GrVkMemory.h"
 #include "vk/GrVkTypes.h"
 
+using sk_gpu_test::GrContextFactory;
+
 const int kW = 1024;
 const int kH = 1024;
 const GrPixelConfig kPixelConfig = kRGBA_8888_GrPixelConfig;
 
 void wrap_tex_test(skiatest::Reporter* reporter, GrContext* context) {
 
     GrVkGpu* gpu = static_cast<GrVkGpu*>(context->getGpu());
 
     GrBackendObject backendObj = gpu->createTestingOnlyBackendTexture(nullptr, kW, kH, kPixelConfig);
     const GrVkTextureInfo* backendTex = reinterpret_cast<const GrVkTextureInfo*>(backendObj);
@@ skipping 137 matching lines @@
         if (context) {
             wrap_tex_test(reporter, context);
             wrap_rt_test(reporter, context);
             wrap_trt_test(reporter, context);
         }
 
     }
 }
 
 #endif