Add support to previews/ for Server LoFi and LitePages

chrome/browser/loader/chrome_resource_dispatcher_host_delegate.cc

Index: chrome/browser/loader/chrome_resource_dispatcher_host_delegate.cc
diff --git a/chrome/browser/loader/chrome_resource_dispatcher_host_delegate.cc b/chrome/browser/loader/chrome_resource_dispatcher_host_delegate.cc
index e66dcef557edc038c5391f707d2437e6a80ea757..fcda7d91b510fdf8a3b5dac310c46817b049542d 100644
--- a/chrome/browser/loader/chrome_resource_dispatcher_host_delegate.cc
+++ b/chrome/browser/loader/chrome_resource_dispatcher_host_delegate.cc
@@ -898,8 +898,10 @@ content::PreviewsState ChromeResourceDispatcherHostDelegate::GetPreviewsState(
 
     previews::PreviewsIOData* previews_io_data = io_data->previews_io_data();
     if (data_reduction_proxy_io_data->IsEnabled() && previews_io_data &&
+        previews::params::IsClientLoFiEnabled() &&
         previews_io_data->ShouldAllowPreview(
-            url_request, previews::PreviewsType::CLIENT_LOFI)) {
+            url_request, previews::PreviewsType::LOFI,
+            previews::params::EffectiveConnectionTypeThresholdForLoFi())) {
       previews_state |= content::CLIENT_LOFI_ON;
     }
   }