Revert "Update for libbase."

Breaks internal master.

This reverts commit b67219a71d1d896bcb34c4a7a797824b88515b2c.

Change-Id: I43145f0724ad2d669b65d20b6fd6ccc44b8f0a4f
diff --git a/server/RouteController.cpp b/server/RouteController.cpp
index 736aa74..b47acd4 100644
--- a/server/RouteController.cpp
+++ b/server/RouteController.cpp
@@ -30,14 +30,12 @@
 #include "Fwmark.h"
 #include "UidRanges.h"
 
-#include "base/file.h"
 #define LOG_TAG "Netd"
 #include "log/log.h"
 #include "logwrap/logwrap.h"
+#include "utils/file.h"
 #include "resolv_netid.h"
 
-using android::base::WriteStringToFile;
-
 namespace {
 
 // BEGIN CONSTANTS --------------------------------------------------------------------------------
@@ -166,7 +164,7 @@
         addTableName(entry.second, entry.first, &contents);
     }
 
-    if (!WriteStringToFile(contents, RT_TABLES_PATH, RT_TABLES_MODE, AID_SYSTEM, AID_WIFI)) {
+    if (!android::WriteStringToFile(contents, RT_TABLES_PATH, RT_TABLES_MODE, AID_SYSTEM, AID_WIFI)) {
         ALOGE("failed to write to %s (%s)", RT_TABLES_PATH, strerror(errno));
         return;
     }