Split network_interfaces.h off of net_utils.h.

net/base/network_interfaces_mac.cc

Index: net/base/network_interfaces_mac.cc
diff --git a/net/base/net_util_mac.cc b/net/base/network_interfaces_mac.cc
similarity index 98%
rename from net/base/net_util_mac.cc
rename to net/base/network_interfaces_mac.cc
index b227fbca88b20c9cf1e67dff7a0c2cf1ff9dcca5..c18723f09096064ee753895aad587f61bebbf999 100644
--- a/net/base/net_util_mac.cc
+++ b/net/base/network_interfaces_mac.cc
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "net/base/net_util_mac.h"
+#include "net/base/network_interfaces_mac.h"
 
 #include <ifaddrs.h>
 #include <net/if.h>
@@ -20,7 +20,7 @@
 #include "net/base/escape.h"
 #include "net/base/ip_endpoint.h"
 #include "net/base/net_errors.h"
-#include "net/base/net_util_posix.h"
+#include "net/base/network_interfaces_posix.h"
 #include "url/gurl.h"
 
 #if !defined(OS_IOS)