Add a new driver bug workaround SANDBOX_START_EARLY

build/config/linux/pkg-config.py

 #!/usr/bin/env python
 # 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.
 
 import json
 import os
 import subprocess
 import sys
 import re
@@ skipping 105 matching lines @@
   parser.add_option('-p', action='store', dest='pkg_config', type='string',
                     default='pkg-config')
   parser.add_option('-v', action='append', dest='strip_out', type='string')
   parser.add_option('-s', action='store', dest='sysroot', type='string')
   parser.add_option('-a', action='store', dest='arch', type='string')
   parser.add_option('--system_libdir', action='store', dest='system_libdir',
                     type='string', default='lib')
   parser.add_option('--atleast-version', action='store',
                     dest='atleast_version', type='string')
   parser.add_option('--libdir', action='store_true', dest='libdir')
+  parser.add_option('--dridriverdir', action='store_true', dest='dridriverdir')
   (options, args) = parser.parse_args()
 
   # Make a list of regular expressions to strip out.
   strip_out = []
   if options.strip_out != None:
     for regexp in options.strip_out:
       strip_out.append(re.compile(regexp))
 
   if options.sysroot:
     libdir = SetConfigPath(options)
@@ skipping 19 matching lines @@
     if options.debug:
       sys.stderr.write('Running: %s\n' % cmd)
     try:
       libdir = subprocess.check_output(cmd)
     except:
       print "Error from pkg-config."
       return 1
     sys.stdout.write(libdir.strip())
     return 0
 
+  if options.dridriverdir:
+    cmd = [options.pkg_config, "--variable=dridriverdir"] + args
+    if options.debug:
+      sys.stderr.write('Running: %s\n' % cmd)
+    try:
+      dridriverdir = subprocess.check_output(cmd)
+    except:
+      print "Error from pkg-config."
+      return 1
+    sys.stdout.write(dridriverdir.strip())
+    return 0
+
   cmd = [options.pkg_config, "--cflags", "--libs"] + args
   if options.debug:
     sys.stderr.write('Running: %s\n' % ' '.join(cmd))
 
   try:
     flag_string = subprocess.check_output(cmd)
   except:
     sys.stderr.write('Could not run pkg-config.\n')
     return 1
 
@@ skipping 35 matching lines @@
 
   # Output a GN array, the first one is the cflags, the second are the libs. The
   # JSON formatter prints GN compatible lists when everything is a list of
   # strings.
   print json.dumps([includes, cflags, libs, lib_dirs, ldflags])
   return 0
 
 
 if __name__ == '__main__':
   sys.exit(main())