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

content/browser/web_contents/debug_urls.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 "content/browser/web_contents/debug_urls.h"
 
 #include <vector>
 
-#include "base/utf_string_conversions.h"
+#include "base/strings/utf_string_conversions.h"
 #include "content/browser/gpu/gpu_process_host_ui_shim.h"
 #include "content/browser/ppapi_plugin_process_host.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/common/url_constants.h"
 #include "googleurl/src/gurl.h"
 #include "ppapi/proxy/ppapi_messages.h"
 #include "webkit/plugins/plugin_constants.h"
 
 namespace content {
 
@@ skipping 53 matching lines @@
       url == GURL(kChromeUIPpapiFlashHangURL)) {
     BrowserThread::PostTask(BrowserThread::IO, FROM_HERE,
                             base::Bind(&HandlePpapiFlashDebugURL, url));
     return true;
   }
 
   return false;
 }
 
 }  // namespace content