Make string_util::WriteInto() DCHECK() that the supplied |length_with_null| > 1, meaning that the...

sandbox/src/sandbox_utils.cc

 // Copyright (c) 2011 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 "sandbox/src/sandbox_utils.h"
 
 #include <windows.h>
 
 #include "base/logging.h"
 #include "base/win/windows_version.h"
@@ skipping 58 matching lines @@
   if (!RtlInitUnicodeString) {
     HMODULE ntdll = ::GetModuleHandle(kNtdllName);
     RtlInitUnicodeString = reinterpret_cast<RtlInitUnicodeStringFunction>(
       GetProcAddress(ntdll, "RtlInitUnicodeString"));
     DCHECK(RtlInitUnicodeString);
   }
   RtlInitUnicodeString(uni_name, name.c_str());
   InitializeObjectAttributes(obj_attr, uni_name, attributes, root, NULL);
 }
 
-std::string WideToMultiByte(const std::wstring& wide) {
-  if (wide.length() == 0)
-    return std::string();
-
-  // compute the length of the buffer we'll need
-  int charcount = WideCharToMultiByte(CP_UTF8, 0, wide.c_str(), -1,
-                                      NULL, 0, NULL, NULL);
-  if (charcount == 0)
-    return std::string();
-
-  std::string mb;
-  WideCharToMultiByte(CP_UTF8, 0, wide.c_str(), -1,
-                      WriteInto(&mb, charcount), charcount, NULL, NULL);
-
-  return mb;
-}
-
 };  // namespace sandbox