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

content/browser/loader/resource_request_info_impl.h

Index: content/browser/loader/resource_request_info_impl.h
diff --git a/content/browser/loader/resource_request_info_impl.h b/content/browser/loader/resource_request_info_impl.h
index 18d0089837205f266110f32dc52085b5b3093e24..b5f193c7e5f967d9eae3cc217f015042d48ecec5 100644
--- a/content/browser/loader/resource_request_info_impl.h
+++ b/content/browser/loader/resource_request_info_impl.h
@@ -70,7 +70,7 @@ class ResourceRequestInfoImpl : public ResourceRequestInfo,
       ResourceContext* context,
       bool report_raw_headers,
       bool is_async,
-      bool is_using_lofi,
+      int previews_state,
       const std::string& original_headers,
       const scoped_refptr<ResourceRequestBodyImpl> body,
       bool initiated_in_secure_context);
@@ -98,7 +98,7 @@ class ResourceRequestInfoImpl : public ResourceRequestInfo,
                                 int* render_frame_id) const override;
   bool IsAsync() const override;
   bool IsDownload() const override;
-  bool IsUsingLoFi() const override;
+  int GetPreviewsState() const override;
   bool ShouldReportRawHeaders() const;
   NavigationUIData* GetNavigationUIData() const override;
 
@@ -233,7 +233,7 @@ class ResourceRequestInfoImpl : public ResourceRequestInfo,
   ResourceContext* context_;
   bool report_raw_headers_;
   bool is_async_;
-  bool is_using_lofi_;
+  int previews_state_;
   const std::string original_headers_;
   scoped_refptr<ResourceRequestBodyImpl> body_;
   bool initiated_in_secure_context_;