Move DeleteAfterReboot and Move to base namespace

net/disk_cache/simple/simple_index_file.cc

Index: net/disk_cache/simple/simple_index_file.cc
diff --git a/net/disk_cache/simple/simple_index_file.cc b/net/disk_cache/simple/simple_index_file.cc
index 39bbe8b2d8d28f7e873cdad7b2a9a6b7c34017ca..4da5313df5a8ce6561854b0376c99c578aeb9941 100644
--- a/net/disk_cache/simple/simple_index_file.cc
+++ b/net/disk_cache/simple/simple_index_file.cc
@@ -54,7 +54,7 @@ void WriteToDiskInternal(const base::FilePath& index_filename,
     base::Delete(temp_filename, /* recursive = */ false);
   } else {
     // Swap temp and index_file.
-    bool result = file_util::ReplaceFile(temp_filename, index_filename);
+    bool result = base::ReplaceFile(temp_filename, index_filename, NULL);
     DCHECK(result);
   }
   if (app_on_background) {