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

content/public/browser/resource_request_info.h

Index: content/public/browser/resource_request_info.h
diff --git a/content/public/browser/resource_request_info.h b/content/public/browser/resource_request_info.h
index bf67f59c9d0975800ada4fc9405e7fb5dff07c52..1b931a7fbae35e8b864e4015689dc5343dd1d2f6 100644
--- a/content/public/browser/resource_request_info.h
+++ b/content/public/browser/resource_request_info.h
@@ -49,7 +49,7 @@ class ResourceRequestInfo {
                                                 bool parent_is_main_frame,
                                                 bool allow_download,
                                                 bool is_async,
-                                                bool is_using_lofi);
+                                                int previews_state);
 
   // Returns the associated RenderFrame for a given process. Returns false, if
   // there is no associated RenderFrame. This method does not rely on the
@@ -158,8 +158,8 @@ class ResourceRequestInfo {
   // Whether this is a download.
   virtual bool IsDownload() const = 0;
 
-  // Whether this request if using Lo-Fi mode.
-  virtual bool IsUsingLoFi() const = 0;
+  // Returns the current state of Previews.
+  virtual int GetPreviewsState() const = 0;
 
   // PlzNavigate
   // Only used for navigations. Returns opaque data set by the embedder on the