Add explicit base namespace to string16 users.

chrome/common/extensions/api/i18n/default_locale_handler.cc

 // Copyright (c) 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 "chrome/common/extensions/api/i18n/default_locale_handler.h"
 
 #include "base/file_util.h"
 #include "base/files/file_enumerator.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/strings/string_util.h"
@@ skipping 18 matching lines @@
       extension->GetManifestData(keys::kDefaultLocale));
   return info ? info->default_locale : base::EmptyString();
 }
 
 DefaultLocaleHandler::DefaultLocaleHandler() {
 }
 
 DefaultLocaleHandler::~DefaultLocaleHandler() {
 }
 
-bool DefaultLocaleHandler::Parse(Extension* extension, string16* error) {
+bool DefaultLocaleHandler::Parse(Extension* extension, base::string16* error) {
   scoped_ptr<LocaleInfo> info(new LocaleInfo);
   if (!extension->manifest()->GetString(keys::kDefaultLocale,
                                         &info->default_locale) ||
       !l10n_util::IsValidLocaleSyntax(info->default_locale)) {
     *error = ASCIIToUTF16(manifest_errors::kInvalidDefaultLocale);
     return false;
   }
   extension->SetManifestData(keys::kDefaultLocale, info.release());
   return true;
 }
@@ skipping 60 matching lines @@
 bool DefaultLocaleHandler::AlwaysValidateForType(Manifest::Type type) const {
   // Required to validate _locales directory; see Validate.
   return true;
 }
 
 const std::vector<std::string> DefaultLocaleHandler::Keys() const {
   return SingleKey(keys::kDefaultLocale);
 }
 
 }  // namespace extensions