move libevent into base

third_party/libevent/nacl_nonsfi/random.c

Index: third_party/libevent/nacl_nonsfi/random.c
diff --git a/third_party/libevent/nacl_nonsfi/random.c b/third_party/libevent/nacl_nonsfi/random.c
deleted file mode 100644
index 3577dd508ac7a73aee39c79da2f97a8f9821d0b6..0000000000000000000000000000000000000000
--- a/third_party/libevent/nacl_nonsfi/random.c
+++ /dev/null
@@ -1,13 +0,0 @@
-/* Copyright 2014 The Chromium Authors. All rights reserved.
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-#include <stdlib.h>
-
-/* The newlib-based PNaCl toolchain does not provide random(). So, here we
- * define it. It just redirects to the rand(), which is provided by the
- * toolchain. */
-long int random() {
-  return rand();
-}