Move more file_util functions to base namespace.

base/test/gtest_xml_util.cc

Index: base/test/gtest_xml_util.cc
diff --git a/base/test/gtest_xml_util.cc b/base/test/gtest_xml_util.cc
index bcba36388b0d5556939cb7d1c785ef05e60f1fe2..75d023a49d9b493c1e156f67133c04818ed75f5e 100644
--- a/base/test/gtest_xml_util.cc
+++ b/base/test/gtest_xml_util.cc
@@ -33,13 +33,13 @@ XmlUnitTestResultPrinter::~XmlUnitTestResultPrinter() {
   if (output_file_) {
     fprintf(output_file_, "</testsuites>\n");
     fflush(output_file_);
-    file_util::CloseFile(output_file_);
+    base::CloseFile(output_file_);
   }
 }
 
 bool XmlUnitTestResultPrinter::Initialize(const FilePath& output_file_path) {
   DCHECK(!output_file_);
-  output_file_ = file_util::OpenFile(output_file_path, "w");
+  output_file_ = OpenFile(output_file_path, "w");
   if (!output_file_)
     return false;