Add X509CertificateBytes which uses CRYPTO_BUFFER instead of macOS-native certificate types.

build/config/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/allocator.gni")
 import("//build/config/chrome_build.gni")
 import("//build/config/chromecast_build.gni")
 import("//build/config/crypto.gni")
 import("//build/config/dcheck_always_on.gni")
 import("//build/config/features.gni")
@@ skipping 54 matching lines @@
   }
   if (use_pango) {
     defines += [ "USE_PANGO=1" ]
   }
   if (use_cairo) {
     defines += [ "USE_CAIRO=1" ]
   }
   if (use_glib) {
     defines += [ "USE_GLIB=1" ]
   }
+  if (use_byte_certs) {

[eroman, 2017/03/29 23:06:54]

Not sure if the OWNERS will be open to this, given the warning comments above. I
guess the alternative could be to express USE_BYTE_CERTS in terms of
platform-defines.

[mattm, 2017/03/30 04:38:09]

Switched to a buildflag defined in net/BUILD.gn.

+    defines += [ "USE_BYTE_CERTS=1" ]
+  }
   if (use_openssl_certs) {
     defines += [ "USE_OPENSSL_CERTS=1" ]
   }
   if (use_nss_certs) {
     defines += [ "USE_NSS_CERTS=1" ]
   }
   if (use_ozone) {
     defines += [ "USE_OZONE=1" ]
   }
   if (use_x11) {
@@ skipping 280 matching lines @@
       # then delete the precompile.c.obj file, then build again.
       #
       # TODO(sof): determine VS2015 status and retire the setting from all
       # precompiled configurations.
       cflags_c = [ "/wd4206" ]
     } else if (is_mac) {
       precompiled_source = "//build/precompile.h"
     }
   }
 }