Revert 239280 "Move more file_util functions to base namespace."

trunk/src/chrome/browser/chromeos/boot_times_loader.cc

Index: trunk/src/chrome/browser/chromeos/boot_times_loader.cc
===================================================================
--- trunk/src/chrome/browser/chromeos/boot_times_loader.cc	(revision 239399)
+++ trunk/src/chrome/browser/chromeos/boot_times_loader.cc	(working copy)
@@ -129,12 +129,12 @@
 static int AppendFile(const base::FilePath& file_path,
                       const char* data,
                       int size) {
-  FILE* file = base::OpenFile(file_path, "a");
+  FILE* file = file_util::OpenFile(file_path, "a");
   if (!file) {
     return -1;
   }
   const int num_bytes_written = fwrite(data, 1, size, file);
-  base::CloseFile(file);
+  file_util::CloseFile(file);
   return num_bytes_written;
 }