[MIPS] Set make_global_settings correctly for MIPS-Linux

build/config/sysroot.gni

 # Copyright (c) 2013 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.
 
 # This header file defines the "sysroot" variable which is the absolute path
 # of the sysroot. If no sysroot applies, the variable will be an empty string.
 
 if (is_android) {
   import("//build/config/android/config.gni")
   if (!is_android_webview_build) {
@@ skipping 15 matching lines @@
   if (cpu_arch == "x64") {
     sysroot = rebase_path(
       "//chrome/installer/linux/debian_wheezy_amd64-sysroot", ".", "")
   } else if (cpu_arch == "x86") {
     sysroot = rebase_path(
       "//chrome/installer/linux/debian_wheezy_i386-sysroot", ".", "")
   } else {
     # Any other builds don't use a sysroot.
     sysroot = ""
   }
+} else if (is_linux && !is_chromeos) {
+  if (cpu_arch == "mipsel") {
+    sysroot = rebase_path("//mipsel-sysroot/sysroot", ".", "")
+  } else {
+    sysroot = ""
+  }
 } else if (is_mac) {
   import("//build/config/mac/mac_sdk.gni")
 
   sysroot = mac_sdk_path
 } else {
   sysroot = ""
 }