layers: Get MemTracker compiling with type safety header change

Still need to test functionality.
diff --git a/layers/layer_common.h b/layers/layer_common.h
new file mode 100644
index 0000000..5bfb4f7
--- /dev/null
+++ b/layers/layer_common.h
@@ -0,0 +1,67 @@
+/*
+ * Vulkan
+ *
+ * Copyright (C) 2014 LunarG, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+#include "vk_debug_report_lunarg.h"
+
+typedef enum _DYNAMIC_STATE_BIND_POINT
+{
+    VK_STATE_BIND_POINT_VIEWPORT,
+    VK_STATE_BIND_POINT_RASTER,
+    VK_STATE_BIND_POINT_COLOR_BLEND,
+    VK_STATE_BIND_POINT_DEPTH_STENCIL,
+    VK_NUM_STATE_BIND_POINT // Used for array sizing
+} DYNAMIC_STATE_BIND_POINT;
+
+static string string_DYNAMIC_STATE_BIND_POINT(DYNAMIC_STATE_BIND_POINT sbp)
+{
+    switch (sbp)
+    {
+        case VK_STATE_BIND_POINT_VIEWPORT:
+            return "VIEWPORT";
+        case VK_STATE_BIND_POINT_RASTER:
+            return "RASTER";
+        case VK_STATE_BIND_POINT_COLOR_BLEND:
+            return "COLOR_BLEND";
+        case VK_STATE_BIND_POINT_DEPTH_STENCIL:
+            return "DEPTH_STENCIL";
+        default:
+            return "UNKNOWN_DYNAMIC_STATE_BIND_POINT";
+    }
+}
+
+static VkDbgObjectType dynamicStateBindPointToObjType(DYNAMIC_STATE_BIND_POINT sbp)
+{
+    switch (sbp)
+    {
+        case VK_STATE_BIND_POINT_VIEWPORT:
+            return VK_OBJECT_TYPE_DYNAMIC_VIEWPORT_STATE;
+        case VK_STATE_BIND_POINT_RASTER:
+            return VK_OBJECT_TYPE_DYNAMIC_RASTER_STATE;
+        case VK_STATE_BIND_POINT_COLOR_BLEND:
+            return VK_OBJECT_TYPE_DYNAMIC_COLOR_BLEND_STATE;
+        case VK_STATE_BIND_POINT_DEPTH_STENCIL:
+            return VK_OBJECT_TYPE_DYNAMIC_DEPTH_STENCIL_STATE;
+        default:
+            return VK_OBJECT_TYPE_MAX_ENUM;
+    }
+}