Add utf_string_conversions to base namespace.

chrome/browser/extensions/browser_action_apitest.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 "chrome/browser/extensions/extension_system.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 
 // Tests that tooltips of a browser action icon can be specified using UTF8.
 // See http://crbug.com/25349.
 IN_PROC_BROWSER_TEST_F(ExtensionBrowserTest, TitleLocalizationBrowserAction) {
   ExtensionService* service = extensions::ExtensionSystem::Get(
       browser()->profile())->extension_service();
   const size_t size_before = service->extensions()->size();
   base::FilePath extension_path(test_data_dir_.AppendASCII("browsertest")
                                         .AppendASCII("title_localized"));
   const Extension* extension = LoadExtension(extension_path);
   ASSERT_TRUE(extension);
 
   ASSERT_EQ(size_before + 1, service->extensions()->size());
 
-  EXPECT_STREQ(WideToUTF8(L"Hreggvi\u00F0ur: l10n browser action").c_str(),
-               extension->description().c_str());
-  EXPECT_STREQ(WideToUTF8(L"Hreggvi\u00F0ur is my name").c_str(),
+  EXPECT_STREQ(
+      base::WideToUTF8(L"Hreggvi\u00F0ur: l10n browser action").c_str(),
+      extension->description().c_str());
+  EXPECT_STREQ(base::WideToUTF8(L"Hreggvi\u00F0ur is my name").c_str(),
                extension->name().c_str());
   int tab_id = ExtensionTabUtil::GetTabId(
       browser()->tab_strip_model()->GetActiveWebContents());
-  EXPECT_STREQ(WideToUTF8(L"Hreggvi\u00F0ur").c_str(),
+  EXPECT_STREQ(base::WideToUTF8(L"Hreggvi\u00F0ur").c_str(),
                extension->browser_action()->GetTitle(tab_id).c_str());
 }