Don't create new descriptor set for vulkan uniforms every draw

src/gpu/vk/GrVkPipelineStateDataManager.h

Index: src/gpu/vk/GrVkPipelineStateDataManager.h
diff --git a/src/gpu/vk/GrVkPipelineStateDataManager.h b/src/gpu/vk/GrVkPipelineStateDataManager.h
index b75d65c9cc55722b1cb7a65631050f195c8e8216..089d170f124f5c90e358c8d058137d88dc3e5a1a 100644
--- a/src/gpu/vk/GrVkPipelineStateDataManager.h
+++ b/src/gpu/vk/GrVkPipelineStateDataManager.h
@@ -46,7 +46,10 @@ public:
         SkFAIL("Only supported in NVPR, which is not in vulkan");
     }
 
-    void uploadUniformBuffers(const GrVkGpu* gpu,
+    // Returns true if either the vertex or fragment buffer needed to generate a new underlying
+    // VkBuffer object in order upload data. If true is returned, this is a signal to the caller
+    // that they will need to update the descriptor set that is using these buffers.
+    bool uploadUniformBuffers(const GrVkGpu* gpu,
                               GrVkUniformBuffer* vertexBuffer,
                               GrVkUniformBuffer* fragmentBuffer) const;
 private: