Use base namespace for string16 in components and cloud_print.

cloud_print/service/win/service_utils.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 "cloud_print/service/win/service_utils.h"
 #include "google_apis/gaia/gaia_switches.h"
 
 #include <windows.h>
 #include <security.h>  // NOLINT
 
 #include "base/command_line.h"
 #include "base/strings/string_util.h"
 #include "chrome/common/chrome_switches.h"
 
-string16 GetLocalComputerName() {
+base::string16 GetLocalComputerName() {
   DWORD size = 0;
-  string16 result;
+  base::string16 result;
   ::GetComputerName(NULL, &size);
   result.resize(size);
   if (result.empty())
     return result;
   if (!::GetComputerName(&result[0], &size))
-    return string16();
+    return base::string16();
   result.resize(size);
   return result;
 }
 
-string16 ReplaceLocalHostInName(const string16& user_name) {
+base::string16 ReplaceLocalHostInName(const base::string16& user_name) {
   static const wchar_t kLocalDomain[] = L".\\";
   if (StartsWith(user_name, kLocalDomain, true)) {
     return GetLocalComputerName() +
            user_name.substr(arraysize(kLocalDomain) - 2);
   }
   return user_name;
 }
 
-string16 GetCurrentUserName() {
+base::string16 GetCurrentUserName() {
   ULONG size = 0;
-  string16 result;
+  base::string16 result;
   ::GetUserNameEx(::NameSamCompatible, NULL, &size);
   result.resize(size);
   if (result.empty())
     return result;
   if (!::GetUserNameEx(::NameSamCompatible, &result[0], &size))
-    return string16();
+    return base::string16();
   result.resize(size);
   return result;
 }
 
 void CopyChromeSwitchesFromCurrentProcess(CommandLine* destination) {
   static const char* const kSwitchesToCopy[] = {
     switches::kCloudPrintServiceURL,
     switches::kEnableLogging,
     switches::kIgnoreUrlFetcherCertRequests,
     switches::kLsoUrl,
     switches::kV,
   };
   destination->CopySwitchesFrom(*CommandLine::ForCurrentProcess(),
                                 kSwitchesToCopy,
                                 arraysize(kSwitchesToCopy));
 }