diff --git a/ipc/chromium/src/third_party/libevent/evutil_rand.c b/ipc/chromium/src/third_party/libevent/evutil_rand.c
index 3bab23121..c1e8a98ef 100644
--- a/ipc/chromium/src/third_party/libevent/evutil_rand.c
+++ b/ipc/chromium/src/third_party/libevent/evutil_rand.c
@@ -39,7 +39,7 @@
 #include "util-internal.h"
 #include "evthread-internal.h"
 
-#ifdef _EVENT_HAVE_ARC4RANDOM
+#if _EVENT_HAVE_ARC4RANDOM
 #include <stdlib.h>
 #include <string.h>
 int
@@ -58,7 +58,7 @@ evutil_secure_rng_global_setup_locks_(const int enable_locks)
 static void
 ev_arc4random_buf(void *buf, size_t n)
 {
-#if defined(_EVENT_HAVE_ARC4RANDOM_BUF) && !(defined(__APPLE__) || defined(__ANDROID__))
+#if _EVENT_HAVE_ARC4RANDOM_BUF && !(defined(__APPLE__) || defined(__ANDROID__))
 	arc4random_buf(buf, n);
 #else
 	unsigned char *b = buf;
@@ -139,7 +139,7 @@ evutil_secure_rng_get_bytes(void *buf, size_t n)
 	ev_arc4random_buf(buf, n);
 }
 
-#if !defined(__OpenBSD__) && !defined(ANDROID)
+#if 0
 void
 evutil_secure_rng_add_bytes(const char *buf, size_t n)
 {
diff --git a/ipc/chromium/src/third_party/libevent/include/event2/util.h b/ipc/chromium/src/third_party/libevent/include/event2/util.h
index 42a28adcb..ed6b6207f 100644
--- a/ipc/chromium/src/third_party/libevent/include/event2/util.h
+++ b/ipc/chromium/src/third_party/libevent/include/event2/util.h
@@ -672,7 +672,7 @@ void evutil_secure_rng_get_bytes(void *buf, size_t n);
  */
 int evutil_secure_rng_init(void);
 
-#if !defined(__OpenBSD__) && !defined(ANDROID)
+#if 0
 /** Seed the random number generator with extra random bytes.
 
     You should almost never need to call this function; it should be
diff --git a/ipc/chromium/src/third_party/libevent/linux/event2/event-config.h b/ipc/chromium/src/third_party/libevent/linux/event2/event-config.h
index 56ebd3aba..21717abed 100644
--- a/ipc/chromium/src/third_party/libevent/linux/event2/event-config.h
+++ b/ipc/chromium/src/third_party/libevent/linux/event2/event-config.h
@@ -24,10 +24,10 @@
 /* #undef _EVENT_DISABLE_THREAD_SUPPORT */
 
 /* Define to 1 if you have the `arc4random' function. */
-/* #undef _EVENT_HAVE_ARC4RANDOM */
+#define _EVENT_HAVE_ARC4RANDOM (__GLIBC__ >= 2 && __GLIBC_MINOR__ >= 36)
 
 /* Define to 1 if you have the `arc4random_buf' function. */
-/* #undef _EVENT_HAVE_ARC4RANDOM_BUF */
+#define _EVENT_HAVE_ARC4RANDOM_BUF _EVENT_HAVE_ARC4RANDOM
 
 /* Define to 1 if you have the <arpa/inet.h> header file. */
 #define _EVENT_HAVE_ARPA_INET_H 1