Split network_interfaces.h off of net_utils.h.

net/BUILD.gn

Index: net/BUILD.gn
diff --git a/net/BUILD.gn b/net/BUILD.gn
index 33a6896a20d9d90b10caee0ff8ca56288c19fa8a..b64440c79c8fcaf61ff84d7bc087c84c0381cc1d 100644
--- a/net/BUILD.gn
+++ b/net/BUILD.gn
@@ -442,10 +442,10 @@ component("net") {
     # files.
     set_sources_assignment_filter([])
     sources += [
-      "base/net_util_mac.cc",
-      "base/net_util_mac.h",
       "base/network_change_notifier_mac.cc",
       "base/network_config_watcher_mac.cc",
+      "base/network_interfaces_mac.cc",
+      "base/network_interfaces_mac.h",
       "base/platform_mime_util_mac.mm",
       "proxy/proxy_resolver_mac.cc",
       "proxy/proxy_server_mac.cc",
@@ -473,8 +473,8 @@ component("net") {
     sources += [
       "base/address_tracker_linux.cc",
       "base/address_tracker_linux.h",
-      "base/net_util_linux.cc",
-      "base/net_util_linux.h",
+      "base/network_interfaces_linux.cc",
+      "base/network_interfaces_linux.h",
       "base/platform_mime_util_linux.cc",
     ]
     set_sources_assignment_filter(sources_assignment_filter)