[Bug-gnuzilla] GCC 4.7 build fail

[BratSinot]

In IceCat some files in "ipc/chromium" missing inclusion of the header unistd.h.

# HG changeset patch
# User Martin Stránský <address@hidden>
# Date 1328886461 -3600
# Node ID 87a5ed480992788832387ba91a77c69fbe9fe349
# Parent  67017dd3b7f6650e6bcd5b6f545e0309e8de7049
Bug 725655 - gcc 4.7 build failures (missing headers). r=benjamin

diff --git a/ipc/chromium/src/base/file_util_linux.cc b/ipc/chromium/src/base/file_util_linux.cc
--- 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"

diff --git a/ipc/chromium/src/base/message_pump_libevent.cc b/ipc/chromium/src/base/message_pump_libevent.cc
--- 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"

diff --git a/ipc/chromium/src/base/time_posix.cc b/ipc/chromium/src/base/time_posix.cc
--- 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 {