Rename WebKit namespace to blink (part 4)

chrome/renderer/prerender/prerender_extra_data.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 "chrome/renderer/prerender/prerender_extra_data.h"
 
 #include "base/logging.h"
 
 namespace prerender {
 
 PrerenderExtraData::PrerenderExtraData(
     int prerender_id,
     int render_view_route_id,
     const gfx::Size& size)
     : prerender_id_(prerender_id),
       render_view_route_id_(render_view_route_id),
       size_(size) {
 }
 
 PrerenderExtraData::~PrerenderExtraData() {
 }
 
 // static
 const PrerenderExtraData& PrerenderExtraData::FromPrerender(
-    const WebKit::WebPrerender& prerender) {
+    const blink::WebPrerender& prerender) {
   DCHECK(prerender.extraData());
   return static_cast<const PrerenderExtraData&>(*prerender.extraData());
 }
 
 }  // namespace prerender