Switch to standard integer types in base/.

BUG=138542
TBR=mark@chromium.org
NOPRESUBMIT=true

Review URL: https://codereview.chromium.org/1538743002

Cr-Commit-Position: refs/heads/master@{#366910}


CrOS-Libchrome-Original-Commit: 9b6f42934e5a1e65ebfc668d91a28a6e2678a14c
diff --git a/base/rand_util.cc b/base/rand_util.cc
index 1a3b79e..fab6c66 100644
--- a/base/rand_util.cc
+++ b/base/rand_util.cc
@@ -4,6 +4,7 @@
 
 #include "base/rand_util.h"
 
+#include <limits.h>
 #include <math.h>
 #include <stdint.h>