unbundle: add GN file for libjpeg

build/linux/unbundle/libjpeg.gn

 # Copyright 2016 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//build/shim_headers.gni")
 
-shim_headers("libevent_shim") {
+shim_headers("libjpeg_shim") {
   root_path = "."
-  headers = [ "event.h" ]
+  headers = [ "jpeglib.h" ]
 }
 
-source_set("libevent") {
+source_set("libjpeg") {
   deps = [
-    ":libevent_shim",
+    ":libjpeg_shim",
   ]
-  libs = [ "event" ]
+  libs = [ "jpeg" ]
 }
+
+source_set("simd") {
+}
+
+source_set("simd_asm") {
+}