Subclass GrVkCommandBuffer into Primary and Secondary CommandBuffers.

src/gpu/vk/GrVkResourceProvider.cpp

Index: src/gpu/vk/GrVkResourceProvider.cpp
diff --git a/src/gpu/vk/GrVkResourceProvider.cpp b/src/gpu/vk/GrVkResourceProvider.cpp
index cd3ba47bcaf586e71adac8f5aee421544ca427ef..ae333bc69e7f9132cedf1cf70c5a29abe5681445 100644
--- a/src/gpu/vk/GrVkResourceProvider.cpp
+++ b/src/gpu/vk/GrVkResourceProvider.cpp
@@ -215,8 +215,8 @@ void GrVkResourceProvider::getUniformDescriptorSet(VkDescriptorSet* ds,
     *outPool = fUniformDescPool;
 }
 
-GrVkCommandBuffer* GrVkResourceProvider::createCommandBuffer() {
-    GrVkCommandBuffer* cmdBuffer = GrVkCommandBuffer::Create(fGpu, fGpu->cmdPool());
+GrVkPrimaryCommandBuffer* GrVkResourceProvider::createPrimaryCommandBuffer() {
+    GrVkPrimaryCommandBuffer* cmdBuffer = GrVkPrimaryCommandBuffer::Create(fGpu, fGpu->cmdPool());
     fActiveCommandBuffers.push_back(cmdBuffer);
     cmdBuffer->ref();
     return cmdBuffer;