Cleanup: Remove unneeded base/file_util.h includes in content.

content/common/sandbox_linux.cc

 // Copyright (c) 2012 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 <fcntl.h>
 #include <sys/resource.h>
 #include <sys/stat.h>
 #include <sys/time.h>
 #include <sys/types.h>
 
 #include <limits>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
-#include "base/file_util.h"
 #include "base/logging.h"
 #include "base/memory/singleton.h"
 #include "base/posix/eintr_wrapper.h"
 #include "base/time.h"
 #include "content/common/sandbox_linux.h"
 #include "content/common/sandbox_seccomp_bpf_linux.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/common/sandbox_linux.h"
 #include "sandbox/linux/suid/client/setuid_sandbox_client.h"
 
@@ skipping 61 matching lines @@
 #if defined(ADDRESS_SANITIZER) && defined(OS_LINUX)
   // ASan needs to open some resources before the sandbox is enabled.
   // This should not fork, not launch threads, not open a directory.
   __sanitizer_sandbox_on_notify(/*reserved*/NULL);
 #endif
 
 #if !defined(NDEBUG)
   // Open proc_fd_ only in Debug mode so that forgetting to close it doesn't
   // produce a sandbox escape in Release mode.
   proc_fd_ = open("/proc", O_DIRECTORY | O_RDONLY);
-  CHECK(proc_fd_ >= 0);
+  CHECK_GE(proc_fd_, 0);
 #endif  // !defined(NDEBUG)
   // We "pre-warm" the code that detects supports for seccomp BPF.
   if (SandboxSeccompBpf::IsSeccompBpfDesired()) {
     if (!SandboxSeccompBpf::SupportsSandbox()) {
       VLOG(1) << "Lacking support for seccomp-bpf sandbox.";
     } else {
       seccomp_bpf_supported_ = true;
     }
   }
   pre_initialized_ = true;
@@ skipping 156 matching lines @@
 void LinuxSandbox::SealSandbox() {
   if (proc_fd_ >= 0) {
     int ret = HANDLE_EINTR(close(proc_fd_));
     CHECK_EQ(0, ret);
     proc_fd_ = -1;
   }
 }
 
 }  // namespace content