Add utf_string_conversions to base namespace.

chrome/browser/process_singleton_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.
 
 // On Linux, when the user tries to launch a second copy of chrome, we check
 // for a socket in the user's profile directory.  If the socket file is open we
 // send a message to the first chrome browser process with the current
 // directory and second process command line flags.  The second process then
 // exits.
 //
@@ skipping 284 matching lines @@
   return true;
 }
 
 void DisplayProfileInUseError(const std::string& lock_path,
                               const std::string& hostname,
                               int pid) {
   string16 error = l10n_util::GetStringFUTF16(
       IDS_PROFILE_IN_USE_LINUX,
       base::IntToString16(pid),
       ASCIIToUTF16(hostname),
-      WideToUTF16(base::SysNativeMBToWide(lock_path)),
+      base::WideToUTF16(base::SysNativeMBToWide(lock_path)),
       l10n_util::GetStringUTF16(IDS_PRODUCT_NAME));
-  LOG(ERROR) << base::SysWideToNativeMB(UTF16ToWide(error)).c_str();
+  LOG(ERROR) << base::SysWideToNativeMB(base::UTF16ToWide(error)).c_str();
   if (!g_disable_prompt) {
 #if defined(TOOLKIT_GTK)
     ProcessSingletonDialog::ShowAndRun(UTF16ToUTF8(error));
 #else
     NOTIMPLEMENTED();
 #endif
   }
 }
 
 bool IsChromeProcess(pid_t pid) {
@@ skipping 675 matching lines @@
 
 void ProcessSingleton::KillProcess(int pid) {
   // TODO(james.su@gmail.com): Is SIGKILL ok?
   int rv = kill(static_cast<base::ProcessHandle>(pid), SIGKILL);
   // ESRCH = No Such Process (can happen if the other process is already in
   // progress of shutting down and finishes before we try to kill it).
   DCHECK(rv == 0 || errno == ESRCH) << "Error killing process: "
                                     << safe_strerror(errno);
 }