Move file_util::Delete to the base namespace

chrome_frame/test/net/fake_external_tab.cc

Index: chrome_frame/test/net/fake_external_tab.cc
diff --git a/chrome_frame/test/net/fake_external_tab.cc b/chrome_frame/test/net/fake_external_tab.cc
index 90ef166705ed338911cce2431e7d0f9340ec1ace..13f3c457287ffb93960d298eb97aad06ec9d45b2 100644
--- a/chrome_frame/test/net/fake_external_tab.cc
+++ b/chrome_frame/test/net/fake_external_tab.cc
@@ -478,7 +478,7 @@ FakeExternalTab::FakeExternalTab() {
   if (file_util::PathExists(user_data_dir_)) {
     VLOG(1) << __FUNCTION__ << " deleting IE Profile user data directory "
             << user_data_dir_.value();
-    bool deleted = file_util::Delete(user_data_dir_, true);
+    bool deleted = base::Delete(user_data_dir_, true);
     LOG_IF(ERROR, !deleted) << "Failed to delete user data directory directory "
                             << user_data_dir_.value();
   }
@@ -892,7 +892,7 @@ void CFUrlRequestUnittestRunner::StopFileLogger(bool print) {
     }
   }
 
-  if (!log_file_.empty() && !file_util::Delete(log_file_, false))
+  if (!log_file_.empty() && !base::Delete(log_file_, false))
     LOG(ERROR) << "Failed to delete log file " << log_file_.value();
 
   log_file_.clear();