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

base/strings/safe_sprintf.cc

 // Copyright 2013 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/strings/safe_sprintf.h"
 
+#include <errno.h>
+#include <string.h>
+
 #include <limits>
 
 #if !defined(NDEBUG)
 // In debug builds, we use RAW_CHECK() to print useful error messages, if
 // SafeSPrintf() is called with broken arguments.
 // As our contract promises that SafeSPrintf() can be called from any
 // restricted run-time context, it is not actually safe to call logging
 // functions from it; and we only ever do so for debug builds and hope for the
 // best. We should _never_ call any logging function other than RAW_CHECK(),
 // and we should _never_ include any logging code that is active in production
@@ skipping 659 matching lines @@
     DEBUG_CHECK(src[0] != '%' || src[1] == '%');
     if (src[0] == '%' && src[1] == '%') {
       ++src;
     }
   }
   return buffer.GetCount();
 }
 
 }  // namespace strings
 }  // namespace base