Move StringToUpperASCII and LowerCaseEqualsASCII to the base namespace

components/data_reduction_proxy/browser/data_reduction_proxy_settings.cc

 // Copyright 2014 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 "components/data_reduction_proxy/browser/data_reduction_proxy_settings.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/metrics/field_trial.h"
 #include "base/metrics/histogram.h"
@@ skipping 568 matching lines @@
 
 bool DataReductionProxySettings::DisableIfVPN() {
   net::NetworkInterfaceList network_interfaces;
   GetNetworkList(&network_interfaces, 0);
   // VPNs use a "tun" interface, so the presence of a "tun" interface indicates
   // a VPN is in use.
   // TODO(kundaji): Verify this works on Windows.
   const std::string vpn_interface_name_prefix = "tun";
   for (size_t i = 0; i < network_interfaces.size(); ++i) {
     std::string interface_name = network_interfaces[i].name;
-    if (LowerCaseEqualsASCII(
-        interface_name.begin(),
-        interface_name.begin() + vpn_interface_name_prefix.size(),
-        vpn_interface_name_prefix.c_str())) {
+    if (base::LowerCaseEqualsASCII(
+            interface_name.begin(),
+            interface_name.begin() + vpn_interface_name_prefix.size(),
+            vpn_interface_name_prefix.c_str())) {
       SetProxyConfigs(false,
                       IsDataReductionProxyAlternativeEnabled(),
                       false,
                       false);
       disabled_on_vpn_ = true;
       RecordNetworkChangeEvent(DISABLED_ON_VPN);
       return true;
     }
   }
   if (disabled_on_vpn_) {
     SetProxyConfigs(enabled_by_user_,
                     IsDataReductionProxyAlternativeEnabled(),
                     restricted_by_carrier_,
                     false);
   }
   disabled_on_vpn_ = false;
   return false;
 }
 
 }  // namespace data_reduction_proxy