Change Lo-Fi bool to bitmask to support multiple Previews types

content/browser/download/download_manager_impl.cc

Index: content/browser/download/download_manager_impl.cc
diff --git a/content/browser/download/download_manager_impl.cc b/content/browser/download/download_manager_impl.cc
index 2ef6b930ecd4e6a846d2f3a007554614dba8f534..ccb9aaaf0deacd59c092df337c86b04ca8af2ba6 100644
--- a/content/browser/download/download_manager_impl.cc
+++ b/content/browser/download/download_manager_impl.cc
@@ -43,6 +43,7 @@
 #include "content/public/browser/render_process_host.h"
 #include "content/public/browser/resource_context.h"
 #include "content/public/browser/web_contents_delegate.h"
+#include "content/public/common/previews_state.h"
 #include "content/public/common/referrer.h"
 #include "net/base/elements_upload_data_stream.h"
 #include "net/base/load_flags.h"
@@ -547,7 +548,7 @@ DownloadInterruptReason DownloadManagerImpl::BeginDownloadRequest(
       url_request.get(), referrer,
       true,  // download.
       render_process_id, render_view_route_id, render_frame_route_id,
-      resource_context);
+      PREVIEWS_OFF, resource_context);
 
   // We treat a download as a main frame load, and thus update the policy URL on
   // redirects.