Move out DidStartProvisionalLoad from WebContentsImpl into Navigator.

content/browser/renderer_host/render_view_host_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 "content/browser/renderer_host/render_view_host_impl.h"
 
 #include <set>
 #include <string>
 #include <utility>
 #include <vector>
@@ skipping 173 matching lines @@
       are_javascript_messages_suppressed_(false),
       sudden_termination_allowed_(false),
       render_view_termination_status_(base::TERMINATION_STATUS_STILL_RUNNING) {
   DCHECK(instance_.get());
   CHECK(delegate_);  // http://crbug.com/82827
 
   if (main_frame_routing_id == MSG_ROUTING_NONE)
     main_frame_routing_id = GetProcess()->GetNextRoutingID();
 
   main_render_frame_host_ = RenderFrameHostFactory::Create(
-      this, delegate_->GetFrameTree(), main_frame_routing_id, is_swapped_out_);
+      this, delegate_->GetFrameTree(), delegate_->GetFrameTree()->root(),
+      main_frame_routing_id, is_swapped_out_);
 
   GetProcess()->EnableSendQueue();
 
   if (!swapped_out)
     instance_->increment_active_view_count();
 
   if (ResourceDispatcherHostImpl::Get()) {
     BrowserThread::PostTask(
         BrowserThread::IO, FROM_HERE,
         base::Bind(&ResourceDispatcherHostImpl::OnRenderViewHostCreated,
@@ skipping 2073 matching lines @@
 void RenderViewHostImpl::AttachToFrameTree() {
   FrameTree* frame_tree = delegate_->GetFrameTree();
 
   frame_tree->SwapMainFrame(main_render_frame_host_.get());
   if (main_frame_id() != FrameTreeNode::kInvalidFrameId) {
     frame_tree->OnFirstNavigationAfterSwap(main_frame_id());
   }
 }
 
 }  // namespace content