Rename WebKit namespace to blink (part 5)

webkit/child/weburlrequest_extradata_impl.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 "webkit/child/weburlrequest_extradata_impl.h"
 
-using WebKit::WebReferrerPolicy;
-using WebKit::WebString;
+using blink::WebReferrerPolicy;
+using blink::WebString;
 
 namespace webkit_glue {
 
 WebURLRequestExtraDataImpl::WebURLRequestExtraDataImpl(
     WebReferrerPolicy referrer_policy,
     const WebString& custom_user_agent,
     bool was_after_preconnect_request)
     : referrer_policy_(referrer_policy),
       custom_user_agent_(custom_user_agent),
       was_after_preconnect_request_(was_after_preconnect_request) {
 }
 
 WebURLRequestExtraDataImpl::~WebURLRequestExtraDataImpl() {
 }
 
 }  // namespace webkit_glue