Move file_util::Delete to the base namespace

net/disk_cache/cache_util_posix.cc

Index: net/disk_cache/cache_util_posix.cc
diff --git a/net/disk_cache/cache_util_posix.cc b/net/disk_cache/cache_util_posix.cc
index ee60bf7b161e2b4d8fbf5c225d4d29b62a644967..db1a4ac206278725bea908b45cdc23fb1e3ab85a 100644
--- a/net/disk_cache/cache_util_posix.cc
+++ b/net/disk_cache/cache_util_posix.cc
@@ -45,14 +45,14 @@ void DeleteCache(const base::FilePath& path, bool remove_folder) {
                             base::FileEnumerator::FILES);
   for (base::FilePath file = iter.Next(); !file.value().empty();
        file = iter.Next()) {
-    if (!file_util::Delete(file, /* recursive */ false)) {
+    if (!base::Delete(file, /* recursive */ false)) {
       LOG(WARNING) << "Unable to delete cache.";
       return;
     }
   }
 
   if (remove_folder) {
-    if (!file_util::Delete(path, /* recursive */ false)) {
+    if (!base::Delete(path, /* recursive */ false)) {
       LOG(WARNING) << "Unable to delete cache folder.";
       return;
     }
@@ -60,7 +60,7 @@ void DeleteCache(const base::FilePath& path, bool remove_folder) {
 }
 
 bool DeleteCacheFile(const base::FilePath& name) {
-  return file_util::Delete(name, false);
+  return base::Delete(name, false);
 }
 
 }  // namespace disk_cache