diff --git a/ipc/chromium/moz.build b/ipc/chromium/moz.build
index f466809f18ca..87f48d474b71 100644
--- a/ipc/chromium/moz.build
+++ b/ipc/chromium/moz.build
@@ -95,32 +95,7 @@ if os_win:
         'src/chrome/common/transport_dib_win.cc',
     ]
 elif not CONFIG['MOZ_NATIVE_LIBEVENT']:
-    UNIFIED_SOURCES += [
-        'src/third_party/libevent/buffer.c',
-        'src/third_party/libevent/bufferevent.c',
-        'src/third_party/libevent/bufferevent_ratelim.c',
-        'src/third_party/libevent/bufferevent_sock.c',
-        'src/third_party/libevent/event.c',
-        'src/third_party/libevent/event_tagging.c',
-        'src/third_party/libevent/evmap.c',
-        'src/third_party/libevent/evrpc.c',
-        'src/third_party/libevent/evthread.c',
-        'src/third_party/libevent/evthread_pthread.c',
-        'src/third_party/libevent/evutil.c',
-        'src/third_party/libevent/evutil_rand.c',
-        'src/third_party/libevent/http.c',
-        'src/third_party/libevent/listener.c',
-        'src/third_party/libevent/log.c',
-        'src/third_party/libevent/poll.c',
-        'src/third_party/libevent/select.c',
-        'src/third_party/libevent/signal.c',
-        'src/third_party/libevent/strlcpy.c',
-    ]
-    SOURCES += [
-        # This file cannot be built in unified mode because of strtotimeval
-        # symbol clash.
-        'src/third_party/libevent/evdns.c',
-    ]
+    DIRS += ['src/third_party']
     DEFINES['HAVE_CONFIG_H'] = True
     LOCAL_INCLUDES += sorted([
         'src/third_party/libevent',
@@ -173,10 +148,6 @@ if os_macosx:
         # of NoOp.
         'src/base/platform_thread_mac.mm',
     ]
-    if not CONFIG['MOZ_NATIVE_LIBEVENT']:
-        UNIFIED_SOURCES += [
-            'src/third_party/libevent/kqueue.c',
-        ]
 
 if os_bsd:
     SOURCES += [
@@ -200,10 +171,6 @@ if os_bsd:
             '!moc_message_pump_qt.cc',
             'src/base/message_pump_qt.cc',
         ]
-    if not CONFIG['MOZ_NATIVE_LIBEVENT']:
-        SOURCES += [
-            'src/third_party/libevent/kqueue.c',
-        ]
 
 if os_linux:
     SOURCES += [
@@ -227,14 +194,6 @@ if os_linux:
             '!moc_message_pump_qt.cc',
             'src/base/message_pump_qt.cc',
         ]
-    if not CONFIG['MOZ_NATIVE_LIBEVENT']:
-        SOURCES += [
-            'src/third_party/libevent/epoll.c',
-        ]
-        if CONFIG['OS_TARGET'] != 'Android':
-            SOURCES += [
-                'src/third_party/libevent/epoll_sub.c',
-            ]
 
 ost = CONFIG['OS_TEST']
 if '86' not in ost and 'arm' not in ost and 'mips' not in ost:
diff --git a/ipc/chromium/src/third_party/moz.build b/ipc/chromium/src/third_party/moz.build
new file mode 100644
index 000000000000..f5e1ee75b881
--- /dev/null
+++ b/ipc/chromium/src/third_party/moz.build
@@ -0,0 +1,80 @@
+# -*- Mode: python; c-basic-offset: 4; indent-tabs-mode: nil; tab-width: 40 -*-
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+if CONFIG['OS_ARCH'] == 'WINNT':
+    error('should not reach here on Windows')
+
+if CONFIG['MOZ_NATIVE_LIBEVENT']:
+    error('should not reach here if we are using a native libevent')
+
+os_macosx = 0
+os_bsd = 0
+os_linux = 0
+
+if CONFIG['OS_ARCH'] == 'Darwin':
+    os_macosx = 1
+    libevent_include_suffix = 'mac'
+elif CONFIG['OS_ARCH'] in ['DragonFly', 'FreeBSD', 'GNU_kFreeBSD',
+                           'NetBSD', 'OpenBSD']:
+    os_bsd = 1
+    libevent_include_suffix = 'bsd'
+else:
+    os_linux = 1
+    if CONFIG['OS_TARGET'] == 'Android':
+        libevent_include_suffix = 'android'
+    else:
+        libevent_include_suffix = 'linux'
+
+UNIFIED_SOURCES += [
+    'libevent/buffer.c',
+    'libevent/bufferevent.c',
+    'libevent/bufferevent_ratelim.c',
+    'libevent/bufferevent_sock.c',
+    'libevent/event.c',
+    'libevent/event_tagging.c',
+    'libevent/evmap.c',
+    'libevent/evrpc.c',
+    'libevent/evthread.c',
+    'libevent/evthread_pthread.c',
+    'libevent/evutil.c',
+    'libevent/evutil_rand.c',
+    'libevent/http.c',
+    'libevent/listener.c',
+    'libevent/log.c',
+    'libevent/poll.c',
+    'libevent/select.c',
+    'libevent/signal.c',
+    'libevent/strlcpy.c',
+]
+SOURCES += [
+    # This file cannot be built in unified mode because of strtotimeval
+    # symbol clash.
+    'libevent/evdns.c',
+]
+DEFINES['HAVE_CONFIG_H'] = True
+LOCAL_INCLUDES += sorted([
+    'libevent',
+    'libevent/include',
+    'libevent/' + libevent_include_suffix,
+])
+
+if os_macosx or os_bsd:
+    UNIFIED_SOURCES += [
+        'libevent/kqueue.c',
+    ]
+
+if os_linux:
+    SOURCES += [
+        'libevent/epoll.c',
+    ]
+    if CONFIG['OS_TARGET'] != 'Android':
+        SOURCES += [
+            'libevent/epoll_sub.c',
+        ]
+
+ALLOW_COMPILER_WARNINGS = True
+
+FINAL_LIBRARY = 'xul'