Get rid of the use_glib gn variable.

mojo/tools/mopy/gn.py

 # Copyright 2015 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.
 
 """
 GN-related configuration functions, e.g., to produce a Config object from a GN
 args.gn file).
 """
 
 
@@ skipping 56 matching lines @@
   else:
     gn_args["use_goma"] = False
 
   gn_args["dcheck_always_on"] = config.dcheck_always_on
 
   if config.target_os == Config.OS_ANDROID:
     gn_args["target_os"] = "android"
   elif config.target_os == Config.OS_FNL:
     gn_args["target_os"] = "fnl"
     gn_args["use_aura"] = False
-    gn_args["use_glib"] = False
     gn_args["use_ozone"] = True
     gn_args["target_sysroot"] = config.values.get("target_sysroot", "")
     gn_args["toolchain_prefix"] = config.values.get("toolchain_prefix", "")
   elif config.target_os == Config.OS_IOS:
     gn_args["target_os"] = "ios"
     gn_args["ios_deployment_target"] = "7.0"
     gn_args["clang_use_chrome_plugins"] = False
     if config.is_simulator:
       gn_args["use_libjpeg_turbo"] = False
     gn_args["use_ios_simulator"] = config.is_simulator
   elif config.target_os == Config.OS_LINUX:
     gn_args["use_aura"] = False
-    gn_args["use_glib"] = False
 
   gn_args["target_cpu"] = config.target_cpu
 
   if "use_nacl" in config.values:
     gn_args["mojo_use_nacl"] = config.values.get("use_nacl", False)
 
   if "mojo_use_go" in config.values:
     gn_args["mojo_use_go"] = config.values.get("mojo_use_go", False)
     if gn_args["mojo_use_go"]:
       gn_args["go_build_tool"] = config.values.get("go_build_tool")
@@ skipping 60 matching lines @@
   values = {}
   with open(gn_file, "r") as f:
     for line in f.readlines():
       line = re.sub("\s*#.*", "", line)
       result = re.match("^\s*(\w+)\s*=\s*(.*)\s*$", line)
       if result:
         key = result.group(1)
         value = result.group(2)
         values[key] = ast.literal_eval(TRANSLATIONS.get(value, value))
   return values