Move more file_util functions to base namespace.

net/proxy/proxy_config_service_linux.cc

Index: net/proxy/proxy_config_service_linux.cc
diff --git a/net/proxy/proxy_config_service_linux.cc b/net/proxy/proxy_config_service_linux.cc
index 2c21283ea755eea474e67ecc8af77e636163e96f..c39dd87465316cef10ae494c71a70cc9bd02ffab 100644
--- a/net/proxy/proxy_config_service_linux.cc
+++ b/net/proxy/proxy_config_service_linux.cc
@@ -886,8 +886,8 @@ class SettingGetterImplKDE : public ProxyConfigServiceLinux::SettingGetter,
         if (base::DirectoryExists(kde4_path)) {
           base::PlatformFileInfo kde3_info;
           base::PlatformFileInfo kde4_info;
-          if (file_util::GetFileInfo(kde4_config, &kde4_info)) {
-            if (file_util::GetFileInfo(kde3_config, &kde3_info)) {
+          if (base::GetFileInfo(kde4_config, &kde4_info)) {
+            if (base::GetFileInfo(kde3_config, &kde3_info)) {
               use_kde4 = kde4_info.last_modified >= kde3_info.last_modified;
             } else {
               use_kde4 = true;