Implement Vulkan Resolve.

src/gpu/vk/GrVkCommandBuffer.h

Index: src/gpu/vk/GrVkCommandBuffer.h
diff --git a/src/gpu/vk/GrVkCommandBuffer.h b/src/gpu/vk/GrVkCommandBuffer.h
index f439b276133afcc410d83173bc4680c829ee796d..67b09c7a8272c72175ce92c79f3c1d9d4df8677f 100644
--- a/src/gpu/vk/GrVkCommandBuffer.h
+++ b/src/gpu/vk/GrVkCommandBuffer.h
@@ -270,6 +270,12 @@ public:
                       VkDeviceSize dataSize,
                       const void* data);
 
+    void resolveImage(GrVkGpu* gpu,
+                      const GrVkImage& srcImage,
+                      const GrVkImage& dstImage,
+                      uint32_t regionCount,
+                      const VkImageResolve* regions);
+
     void submitToQueue(const GrVkGpu* gpu, VkQueue queue, GrVkGpu::SyncQueue sync);
     bool finished(const GrVkGpu* gpu) const;