Update uses of UTF conversions in chrome/common to use the base:: namespace.

chrome/common/extensions/permissions/settings_override_permission.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 "chrome/common/extensions/permissions/settings_override_permission.h"
 
 #include "base/strings/utf_string_conversions.h"
 #include "grit/generated_resources.h"
 #include "ui/base/l10n/l10n_util.h"
 
@@ skipping 28 matching lines @@
     case kSearchProvider: {
       string_id = IDS_EXTENSION_PROMPT_WARNING_SEARCH_SETTINGS_OVERRIDE;
       break;
     }
     default:
       NOTREACHED();
   }
   PermissionMessages result;
   result.push_back(PermissionMessage(
       info()->message_id(),
-      l10n_util::GetStringFUTF16(string_id, UTF8ToUTF16(setting_value_))));
+      l10n_util::GetStringFUTF16(string_id,
+                                 base::UTF8ToUTF16(setting_value_))));
   return result;
 }
 
 bool SettingsOverrideAPIPermission::Check(
     const APIPermission::CheckParam* param) const {
   return !param;
 }
 
 bool SettingsOverrideAPIPermission::Contains(const APIPermission* rhs) const {
   CHECK(info() == rhs->info());
@@ skipping 44 matching lines @@
 
 bool SettingsOverrideAPIPermission::Read(
     const IPC::Message* m, PickleIterator* iter) {
   return true;
 }
 
 void SettingsOverrideAPIPermission::Log(std::string* log) const {
 }
 
 }  // namespace extensions