Use a direct include of utf_string_conversions.h in content/.

content/browser/media/encrypted_media_browsertest.cc

 // Copyright (c) 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 "base/command_line.h"
 #include "base/path_service.h"
-#include "base/utf_string_conversions.h"
+#include "base/strings/utf_string_conversions.h"
 #include "base/win/windows_version.h"
 #include "content/browser/media/media_browsertest.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/test/browser_test_utils.h"
 #include "content/shell/shell.h"
 #include "webkit/renderer/media/crypto/key_systems.h"
 
 #include "widevine_cdm_version.h"  // In SHARED_INTERMEDIATE_DIR.
 
 #if defined(WIDEVINE_CDM_AVAILABLE) && defined(OS_LINUX)
@@ skipping 216 matching lines @@
 
 IN_PROC_BROWSER_TEST_F(WVEncryptedMediaTest, Playback_AudioOnly_MP4) {
   TestSimplePlayback("bear-640x360-a_frag-cenc.mp4", kMP4AudioOnly,
                      kWidevineKeySystem);
 }
 #endif  // defined(GOOGLE_CHROME_BUILD) || defined(USE_PROPRIETARY_CODECS)
 #endif  // !defined(DISABLE_WIDEVINE_CDM_BROWSERTESTS)
 #endif  // defined(WIDEVINE_CDM_AVAILABLE)
 
 }  // namespace content