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

content/browser/plugin_browsertest.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/path_service.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "content/browser/loader/resource_dispatcher_host_impl.h"
@@ skipping 15 matching lines @@
 #include "base/win/registry.h"
 #endif
 
 // TODO(jschuh): Finish plugins on Win64. crbug.com/180861
 #if defined(OS_WIN) && defined(ARCH_CPU_X86_64)
 #define MAYBE(x) DISABLED_##x
 #else
 #define MAYBE(x) x
 #endif
 
+using base::ASCIIToUTF16;
+
 namespace content {
 namespace {
 
 void SetUrlRequestMock(const base::FilePath& path) {
   URLRequestMockHTTPJob::AddUrlHandler(path);
 }
 
 }
 
 class PluginTest : public ContentBrowserTest {
@@ skipping 502 matching lines @@
   ResourceDispatcherHostDelegate* old_delegate =
       ResourceDispatcherHostImpl::Get()->delegate();
   ResourceDispatcherHostImpl::Get()->SetDelegate(&test_delegate);
   LoadAndWait(url);
   test_delegate.WaitForPluginRequest();
   ASSERT_TRUE(test_delegate.found_cookie());
   ResourceDispatcherHostImpl::Get()->SetDelegate(old_delegate);
 }
 
 }  // namespace content