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

content/browser/frame_host/navigator_impl.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_BROWSER_FRAME_HOST_NAVIGATOR_IMPL_H_
 #define CONTENT_BROWSER_FRAME_HOST_NAVIGATOR_IMPL_H_
 
 #include <memory>
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/time/time.h"
 #include "content/browser/frame_host/navigation_controller_impl.h"
 #include "content/browser/frame_host/navigator.h"
 #include "content/common/content_export.h"
 #include "content/common/navigation_params.h"
+#include "content/public/common/previews_state.h"
 #include "url/gurl.h"
 
 class GURL;
 
 namespace content {
 
 class NavigationControllerImpl;
 class NavigatorDelegate;
 class ResourceRequestBodyImpl;
 struct LoadCommittedDetails;
@@ skipping 93 matching lines @@
 
   // PlzNavigate: if needed, sends a BeforeUnload IPC to the renderer to ask it
   // to execute the beforeUnload event. Otherwise, the navigation request will
   // be started.
   void RequestNavigation(FrameTreeNode* frame_tree_node,
                          const GURL& dest_url,
                          const Referrer& dest_referrer,
                          const FrameNavigationEntry& frame_entry,
                          const NavigationEntryImpl& entry,
                          ReloadType reload_type,
-                         LoFiState lofi_state,
+                         PreviewsState previews_state,
                          bool is_same_document_history_load,
                          bool is_history_navigation_in_new_child,
                          base::TimeTicks navigation_start);
 
   void RecordNavigationMetrics(
       const LoadCommittedDetails& details,
       const FrameHostMsg_DidCommitProvisionalLoad_Params& params,
       SiteInstance* site_instance);
 
   // Called when a navigation has started in a main frame, to update the pending
@@ skipping 14 matching lines @@
   NavigatorDelegate* delegate_;
 
   std::unique_ptr<NavigatorImpl::NavigationMetricsData> navigation_data_;
 
   DISALLOW_COPY_AND_ASSIGN(NavigatorImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_FRAME_HOST_NAVIGATOR_IMPL_H_