Give the main frame a RenderWidget.

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 295 matching lines @@
 
   ViewMsg_New_Params params;
   params.renderer_preferences =
       delegate_->GetRendererPrefs(GetProcess()->GetBrowserContext());
 #if defined(OS_WIN)
   GetWindowsSpecificPrefs(&params.renderer_preferences);
 #endif
   params.web_preferences = GetWebkitPreferences();
   params.view_id = GetRoutingID();
   params.main_frame_routing_id = main_frame_routing_id_;
+  if (main_frame_routing_id_ != MSG_ROUTING_NONE) {
+    RenderFrameHostImpl* main_rfh = RenderFrameHostImpl::FromID(
+        GetProcess()->GetID(), main_frame_routing_id_);
+    DCHECK(main_rfh);
+    RenderWidgetHostImpl* main_rwh = main_rfh->GetRenderWidgetHost();
+    params.main_frame_widget_routing_id = main_rwh->GetRoutingID();
+  }
   params.session_storage_namespace_id =
       delegate_->GetSessionStorageNamespace(instance_.get())->id();
   // Ensure the RenderView sets its opener correctly.
   params.opener_frame_route_id = opener_frame_route_id;
   params.swapped_out = !is_active_;
   params.replicated_frame_state = replicated_frame_state;
   params.proxy_routing_id = proxy_route_id;
   params.hidden = GetWidget()->is_hidden();
   params.never_visible = delegate_->IsNeverVisible();
   params.window_was_created_with_opener = window_was_created_with_opener;
@@ skipping 677 matching lines @@
   }
 
   RenderWidgetHostImpl::WasShown(latency_info);
 }
 
 bool RenderViewHostImpl::IsRenderView() const {
   return true;
 }
 
 void RenderViewHostImpl::CreateNewWindow(
-    int route_id,
-    int main_frame_route_id,
+    int32_t route_id,
+    int32_t main_frame_route_id,
+    int32_t main_frame_widget_route_id,
     const ViewHostMsg_CreateWindow_Params& params,
     SessionStorageNamespace* session_storage_namespace) {
   ViewHostMsg_CreateWindow_Params validated_params(params);
   GetProcess()->FilterURL(false, &validated_params.target_url);
   GetProcess()->FilterURL(false, &validated_params.opener_url);
   GetProcess()->FilterURL(true, &validated_params.opener_security_origin);
 
   delegate_->CreateNewWindow(GetSiteInstance(), route_id, main_frame_route_id,
-                             validated_params, session_storage_namespace);
+                             main_frame_widget_route_id, validated_params,
+                             session_storage_namespace);
 }
 
 void RenderViewHostImpl::CreateNewWidget(int32 route_id,
                                          blink::WebPopupType popup_type) {
   delegate_->CreateNewWidget(GetProcess()->GetID(), route_id, popup_type);
 }
 
 void RenderViewHostImpl::CreateNewFullscreenWidget(int32 route_id) {
   delegate_->CreateNewFullscreenWidget(GetProcess()->GetID(), route_id);
 }
@@ skipping 426 matching lines @@
   } else {
     render_view_ready_on_process_launch_ = true;
   }
 }
 
 void RenderViewHostImpl::RenderViewReady() {
   delegate_->RenderViewReady(this);
 }
 
 }  // namespace content