Fix borrowed GrVkImage::Resource.

src/gpu/vk/GrVkImage.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.
  */
 
 #include "GrVkGpu.h"
 #include "GrVkImage.h"
 #include "GrVkMemory.h"
@@ skipping 95 matching lines @@
     if (fResource) {
         fResource->unrefAndAbandon();
         fResource = nullptr;
     }
 }
 
 void GrVkImage::Resource::freeGPUData(const GrVkGpu* gpu) const {
     VK_CALL(gpu, DestroyImage(gpu->device(), fImage, nullptr));
     VK_CALL(gpu, FreeMemory(gpu->device(), fAlloc, nullptr));
 }
+
+void GrVkImage::BorrowedResource::freeGPUData(const GrVkGpu* gpu) const {
+}