include what you use: errno.h and string.h in content/

content/browser/download/base_file_posix.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 "content/browser/download/base_file.h"
 
+#include <errno.h>
+
 #include "base/files/file_util.h"
 #include "content/public/browser/download_interrupt_reasons.h"
 
 namespace content {
 
 DownloadInterruptReason BaseFile::MoveFileAndAdjustPermissions(
     const base::FilePath& new_path) {
   // Similarly, on Unix, we're moving a temp file created with permissions 600
   // to |new_path|. Here, we try to fix up the destination file with appropriate
   // permissions.
@@ skipping 16 matching lines @@
   if (stat_succeeded) {
     // On Windows file systems (FAT, NTFS), chmod fails.  This is OK.
     int chmod_error = chmod(new_path.value().c_str(), st.st_mode);
     if (chmod_error < 0)
       LogSystemError("chmod", errno);
   }
   return DOWNLOAD_INTERRUPT_REASON_NONE;
 }
 
 }  // namespace content