Add utf_string_conversions to base namespace.

chrome/test/perf/dom_checker_uitest.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/command_line.h"
 #include "base/file_util.h"
 #include "base/files/file_path.h"
 #include "base/json/json_string_value_serializer.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/path_service.h"
@@ skipping 149 matching lines @@
         L"window.domAutomationController.send("
         L"    JSON.stringify(automation.GetFailures()));",
         &json_wide);
 
     // Note that we don't use ASSERT_TRUE here (and in some other places) as it
     // doesn't work inside a function with a return type other than void.
     EXPECT_TRUE(succeeded);
     if (!succeeded)
       return false;
 
-    std::string json = WideToUTF8(json_wide);
+    std::string json = base::WideToUTF8(json_wide);
     JSONStringValueSerializer deserializer(json);
     scoped_ptr<Value> value(deserializer.Deserialize(NULL, NULL));
 
     EXPECT_TRUE(value.get());
     if (!value.get())
       return false;
 
     EXPECT_TRUE(value->IsType(Value::TYPE_LIST));
     if (!value->IsType(Value::TYPE_LIST))
       return false;
@@ skipping 65 matching lines @@
 TEST_F(DomCheckerTest, DISABLED_Http) {
   if (!CommandLine::ForCurrentProcess()->HasSwitch(kRunDomCheckerTest))
     return;
 
   ResultsList new_passes, new_failures;
   RunTest(true, &new_passes, &new_failures);
   PrintResults(new_passes, new_failures);
 }
 
 }  // namespace