Create RenderFrame/RenderFrameHost for the main frame of a page.

content/browser/renderer_host/render_view_host_factory.h

Index: content/browser/renderer_host/render_view_host_factory.h
diff --git a/content/browser/renderer_host/render_view_host_factory.h b/content/browser/renderer_host/render_view_host_factory.h
index 0b7465d7afd175719776fbe8bd2820c90e46eb74..df61552a5e3b01d7fbc148a266283b16038b2d6c 100644
--- a/content/browser/renderer_host/render_view_host_factory.h
+++ b/content/browser/renderer_host/render_view_host_factory.h
@@ -28,6 +28,7 @@ class RenderViewHostFactory {
       RenderViewHostDelegate* delegate,
       RenderWidgetHostDelegate* widget_delegate,
       int routing_id,
+      int main_frame_routing_id,
       bool swapped_out,
       SessionStorageNamespace* session_storage);
 
@@ -47,6 +48,7 @@ class RenderViewHostFactory {
       RenderViewHostDelegate* delegate,
       RenderWidgetHostDelegate* widget_delegate,
       int routing_id,
+      int main_frame_routing_id,
       bool swapped_out,
       SessionStorageNamespace* session_storage_namespace) = 0;