Move PathExists to base namespace.

net/proxy/proxy_config_service_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 "net/proxy/proxy_config_service_linux.h"
 
 #include <errno.h>
 #include <fcntl.h>
 #if defined(USE_GCONF)
 #include <gconf/gconf-client.h>
@@ skipping 808 matching lines @@
   } else {
     // Yes, we're on the UI thread. Yes, we're accessing the file system.
     // Sadly, we don't have much choice. We need the proxy settings and we
     // need them now, and to figure out where to get them, we have to check
     // for this binary. See http://crbug.com/69057 for additional details.
     base::ThreadRestrictions::ScopedAllowIO allow_io;
     std::vector<std::string> paths;
     Tokenize(path, ":", &paths);
     for (size_t i = 0; i < paths.size(); ++i) {
       base::FilePath file(paths[i]);
-      if (file_util::PathExists(file.Append("gnome-network-properties"))) {
+      if (base::PathExists(file.Append("gnome-network-properties"))) {
         VLOG(1) << "Found gnome-network-properties. Will fall back to gconf.";
         return false;
       }
     }
   }
 
   VLOG(1) << "All gsettings tests OK. Will get proxy config from gsettings.";
   return true;
 }
 #endif  // defined(USE_GIO)
@@ skipping 917 matching lines @@
 void ProxyConfigServiceLinux::RemoveObserver(Observer* observer) {
   delegate_->RemoveObserver(observer);
 }
 
 ProxyConfigService::ConfigAvailability
     ProxyConfigServiceLinux::GetLatestProxyConfig(ProxyConfig* config) {
   return delegate_->GetLatestProxyConfig(config);
 }
 
 }  // namespace net