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

chrome/browser/search_engines/template_url_fetcher_unittest.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 "base/file_util.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop/message_loop.h"
 #include "base/path_service.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/search_engines/template_url.h"
 #include "chrome/browser/search_engines/template_url_fetcher.h"
 #include "chrome/browser/search_engines/template_url_fetcher_callbacks.h"
 #include "chrome/browser/search_engines/template_url_fetcher_factory.h"
 #include "chrome/browser/search_engines/template_url_service.h"
 #include "chrome/browser/search_engines/template_url_service_test_util.h"
 #include "chrome/common/chrome_paths.h"
 #include "chrome/test/base/testing_profile.h"
 #include "content/public/browser/browser_thread.h"
 #include "net/test/embedded_test_server/embedded_test_server.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "url/gurl.h"
 
+using base::ASCIIToUTF16;
+
 class TemplateURLFetcherTest;
 
 // Handles callbacks from TemplateURLFetcher.
 class TemplateURLFetcherTestCallbacks : public TemplateURLFetcherCallbacks {
  public:
   explicit TemplateURLFetcherTestCallbacks(TemplateURLFetcherTest* test)
       : test_(test) {
   }
   virtual ~TemplateURLFetcherTestCallbacks();
 
@@ skipping 285 matching lines @@
   StartDownload(keyword, osdd_file_name,
                 TemplateURLFetcher::EXPLICIT_PROVIDER, true);
   ASSERT_EQ(0, add_provider_called_);
   ASSERT_EQ(1, callbacks_destroyed_);
 
   WaitForDownloadToFinish();
   ASSERT_EQ(1, add_provider_called_);
   ASSERT_EQ(2, callbacks_destroyed_);
   ASSERT_TRUE(last_callback_template_url_.get());
 }