Move more file_util functions to base namespace.

net/base/upload_file_element_reader.cc

Index: net/base/upload_file_element_reader.cc
diff --git a/net/base/upload_file_element_reader.cc b/net/base/upload_file_element_reader.cc
index e7bf0c12bead89084abddd013598c1b428a7382a..ab7dd9eb1a1a81b33aeb8eeaec83b890316903e8 100644
--- a/net/base/upload_file_element_reader.cc
+++ b/net/base/upload_file_element_reader.cc
@@ -62,7 +62,7 @@ int InitInternal(const base::FilePath& path,
   // time_t to compare. This check is used for sliced files.
   if (!expected_modification_time.is_null()) {
     base::PlatformFileInfo info;
-    if (!file_util::GetFileInfo(path, &info)) {
+    if (!base::GetFileInfo(path, &info)) {
       DLOG(WARNING) << "Failed to get file info of \"" << path.value() << "\"";
       return ERR_FILE_NOT_FOUND;
     }