[net] Move android/x509_util.[cc|h] to cert/x509_util_android.[cc|h]

Another x509_util.[cc|h] already exist, and the Android specific files
where introduced in r230126.

BUG=149426
R=rsleevi@chromium.org

Review URL: https://codereview.chromium.org/35763004

Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 982cedd4272743bce74fd3a7ea58c82924a8b7cb

tools/gn/secondary/net/BUILD.gn

diff --git a/tools/gn/secondary/net/BUILD.gn b/tools/gn/secondary/net/BUILD.gn
index 77ac418..114da13 100644
--- a/tools/gn/secondary/net/BUILD.gn
+++ b/tools/gn/secondary/net/BUILD.gn
@@ -26,8 +26,6 @@
     "android/network_change_notifier_factory_android.h",
     "android/network_library.cc",
     "android/network_library.h",
-    "android/x509_util.cc",
-    "android/x509_util.h",
     "base/address_family.h",
     "base/address_list.cc",
     "base/address_list.h",
@@ -254,6 +252,8 @@
     "cert/x509_certificate_win.cc",
     "cert/x509_util.h",
     "cert/x509_util.cc",
+    "cert/x509_util_android.cc",
+    "cert/x509_util_android.h",
     "cert/x509_util_ios.cc",
     "cert/x509_util_ios.h",
     "cert/x509_util_mac.cc",