OOPIF: Allow navigations on a RFH without a site to stay in same process

content/browser/loader/cross_site_resource_handler.cc

Index: content/browser/loader/cross_site_resource_handler.cc
diff --git a/content/browser/loader/cross_site_resource_handler.cc b/content/browser/loader/cross_site_resource_handler.cc
index 4f7ae48763e1490b40764ee830e70fc780ec0a40..aa4e88d6afbd579d0911093a79f0cfbc1be6bf4d 100644
--- a/content/browser/loader/cross_site_resource_handler.cc
+++ b/content/browser/loader/cross_site_resource_handler.cc
@@ -97,6 +97,11 @@ bool CheckNavigationPolicyOnUI(GURL url, int process_id, int render_frame_id) {
   if (!rfh)
     return false;
 
+  // A transfer is not needed if the current SiteInstance doesn't yet have a
+  // site.  This is the case for tests that use NavigateToURL.
+  if (!rfh->GetSiteInstance()->HasSite())
+    return false;
+
   // TODO(nasko): This check is very simplistic and is used temporarily only
   // for --site-per-process. It should be updated to match the check performed
   // by RenderFrameHostManager::UpdateStateForNavigate.