PlzNavigate: Make ServiceWorker work with PlzNavigate.

content/public/browser/navigation_handle.cc

 // Copyright 2015 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/public/browser/navigation_handle.h"
 
 #include "content/browser/frame_host/navigation_handle_impl.h"
 #include "content/browser/frame_host/navigator.h"
+#include "content/browser/frame_host/render_frame_host_impl.h"
 #include "content/browser/web_contents/web_contents_impl.h"
 
 namespace content {
 
 WebContents* NavigationHandle::GetWebContents() {
   // The NavigationHandleImpl cannot access the WebContentsImpl as it would be
   // a layering violation, hence the cast here.
   return static_cast<WebContentsImpl*>(
       static_cast<NavigationHandleImpl*>(this)->delegate());
 }
 
 // static
 scoped_ptr<NavigationHandle> NavigationHandle::CreateNavigationHandleForTesting(
     const GURL& url,
     bool is_main_frame,
-    WebContents* web_contents) {
+    RenderFrameHost* render_frame_host) {
   scoped_ptr<NavigationHandleImpl> handle_impl = NavigationHandleImpl::Create(
-      url, is_main_frame, static_cast<WebContentsImpl*>(web_contents));
+      url, is_main_frame,
+      static_cast<RenderFrameHostImpl*>(render_frame_host)->frame_tree_node());
   return scoped_ptr<NavigationHandle>(handle_impl.Pass());
 }
 
 }  // namespace content