diff --git a/third_party/vulkan/loader/vk_loader_layer.h b/third_party/vulkan/loader/vk_loader_layer.h
new file mode 100644
index 000000000..2207c029d
--- /dev/null
+++ b/third_party/vulkan/loader/vk_loader_layer.h
@@ -0,0 +1,32 @@
+/*
+*
+* Copyright (c) 2016 The Khronos Group Inc.
+* Copyright (c) 2016 Valve Corporation
+* Copyright (c) 2016 LunarG, Inc.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* Author: Mark Lobodzinski <mark@lunarg.com>
+*
+*/
+#pragma once
+
+// Linked list node for tree of debug callback functions
+typedef struct VkLayerDbgFunctionNode_ {
+    VkDebugReportCallbackEXT msgCallback;
+    PFN_vkDebugReportCallbackEXT pfnMsgCallback;
+    VkFlags msgFlags;
+    void *pUserData;
+    struct VkLayerDbgFunctionNode_ *pNext;
+} VkLayerDbgFunctionNode;
+