Use transfer buffer for BatchAtlas texture copies

src/gpu/vk/GrVkGpu.h

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrVkGpu_DEFINED
 #define GrVkGpu_DEFINED
 
@@ skipping 123 matching lines @@
     void onResolveRenderTarget(GrRenderTarget* target) override;
 
     void submitSecondaryCommandBuffer(GrVkSecondaryCommandBuffer*,
                                       const GrVkRenderPass*,
                                       const VkClearValue*,
                                       GrVkRenderTarget*,
                                       const SkIRect& bounds);
 
     void finishDrawTarget() override;
 
+    GrFence SK_WARN_UNUSED_RESULT insertFence() const override;
+    bool waitFence(GrFence) const override;
+    void deleteFence(GrFence) const override;
+
     void generateMipmap(GrVkTexture* tex);
 
     bool updateBuffer(GrVkBuffer* buffer, const void* src, VkDeviceSize offset, VkDeviceSize size);
 
     // Heaps
     enum Heap {
         kLinearImage_Heap = 0,
         // We separate out small (i.e., <= 16K) images to reduce fragmentation
         // in the main heap.
         kOptimalImage_Heap,
@@ skipping 38 matching lines @@
     bool onReadPixels(GrSurface* surface,
                       int left, int top, int width, int height,
                       GrPixelConfig,
                       void* buffer,
                       size_t rowBytes) override;
 
     bool onWritePixels(GrSurface* surface,
                        int left, int top, int width, int height,
                        GrPixelConfig config, const SkTArray<GrMipLevel>&) override;
 
-    bool onTransferPixels(GrSurface*,
+    bool onTransferPixels(GrTexture*,
                           int left, int top, int width, int height,
                           GrPixelConfig config, GrBuffer* transferBuffer,
-                          size_t offset, size_t rowBytes) override { return false; }
+                          size_t offset, size_t rowBytes) override;
 
     // Ends and submits the current command buffer to the queue and then creates a new command
     // buffer and begins it. If sync is set to kForce_SyncQueue, the function will wait for all
     // work in the queue to finish before returning.
     void submitCommandBuffer(SyncQueue sync);
 
     void copySurfaceAsCopyImage(GrSurface* dst,
                                 GrSurface* src,
                                 GrVkImage* dstImage,
                                 GrVkImage* srcImage,
@@ skipping 61 matching lines @@
 #else
     // Shaderc compiler used for compiling glsl in spirv. We only want to create the compiler once
     // since there is significant overhead to the first compile of any compiler.
     shaderc_compiler_t fCompiler;
 #endif
 
     typedef GrGpu INHERITED;
 };
 
 #endif