--- a/ipc/chromium/src/base/file_util_linux.cc
+++ b/ipc/chromium/src/base/file_util_linux.cc
@@ -1,15 +1,18 @@
 // Copyright (c) 2006-2008 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 "base/file_util.h"
 
 #include <fcntl.h>
+#if defined(ANDROID) || defined(OS_POSIX)
+#include <unistd.h>
+#endif
 
 #include <string>
 #include <vector>
 
 #include "base/eintr_wrapper.h"
 #include "base/file_path.h"
 #include "base/string_util.h"
 

--- a/ipc/chromium/src/base/message_pump_libevent.cc
+++ b/ipc/chromium/src/base/message_pump_libevent.cc
@@ -1,16 +1,19 @@
 // Copyright (c) 2008 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 "base/message_pump_libevent.h"
 
 #include <errno.h>
 #include <fcntl.h>
+#if defined(ANDROID) || defined(OS_POSIX)
+#include <unistd.h>
+#endif
 
 #include "eintr_wrapper.h"
 #include "base/logging.h"
 #include "base/scoped_nsautorelease_pool.h"
 #include "base/scoped_ptr.h"
 #include "base/time.h"
 #include "third_party/libevent/event.h"
 

--- a/ipc/chromium/src/base/time_posix.cc
+++ b/ipc/chromium/src/base/time_posix.cc
@@ -8,16 +8,19 @@
 #include <mach/mach_time.h>
 #endif
 #include <sys/time.h>
 #ifdef ANDROID
 #include <time64.h>
 #else
 #include <time.h>
 #endif
+#if defined(ANDROID) || defined(OS_POSIX)
+#include <unistd.h>
+#endif
 
 #include <limits>
 
 #include "base/basictypes.h"
 #include "base/logging.h"
 
 namespace base {