Pull new GN binary @ r247206

build/config/compiler/BUILD.gn

 # 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("//build/config/android/config.gni")
 import("//build/config/sysroot.gni")
 if (cpu_arch == "arm") {
   import("//build/config/arm.gni")
 }
 
@@ skipping 402 matching lines @@
     # In Chromium code, we define __STDC_foo_MACROS in order to get the
     # C99 macros on Mac and Linux.
     defines = [
       "__STDC_CONSTANT_MACROS",
       "__STDC_FORMAT_MACROS",
     ]
 
     # TODO(brettw) this should also be enabled on Linux but some files
     # currently fail.
     if (is_mac) {
-      cflags += "-Wextra"
+      cflags += [ "-Wextra" ]
     }
   }
 }
 config("no_chromium_code") {
   if (is_win) {
     cflags = [
       "/W3",  # Warning level 3.
       "/wd4800",  # Disable warning when forcing value to bool.
     ]
     defines = [
@@ skipping 247 matching lines @@
     cflags = [ "-g1" ]
   }
 }
 
 config("no_symbols") {
   if (!is_win) {
     cflags = [ "-g0" ]
   }
 }