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

content/browser/frame_host/navigation_entry_impl.cc

 // 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.
 
 #include "content/browser/frame_host/navigation_entry_impl.h"
 
 #include <stddef.h>
 
 #include <queue>
 #include <utility>
@@ skipping 653 matching lines @@
 
   return copy;
 }
 
 CommonNavigationParams NavigationEntryImpl::ConstructCommonNavigationParams(
     const FrameNavigationEntry& frame_entry,
     const scoped_refptr<ResourceRequestBodyImpl>& post_body,
     const GURL& dest_url,
     const Referrer& dest_referrer,
     FrameMsg_Navigate_Type::Value navigation_type,
-    LoFiState lofi_state,
+    PreviewsState previews_state,
     const base::TimeTicks& navigation_start) const {
   FrameMsg_UILoadMetricsReportType::Value report_type =
       FrameMsg_UILoadMetricsReportType::NO_REPORT;
   base::TimeTicks ui_timestamp = base::TimeTicks();
 #if defined(OS_ANDROID)
   if (!intent_received_timestamp().is_null())
     report_type = FrameMsg_UILoadMetricsReportType::REPORT_INTENT;
   ui_timestamp = intent_received_timestamp();
 #endif
 
   std::string method;
 
   // TODO(clamy): Consult the FrameNavigationEntry in all modes that use
   // subframe navigation entries.
   if (IsBrowserSideNavigationEnabled())
     method = frame_entry.method();
   else
     method = (post_body.get() || GetHasPostData()) ? "POST" : "GET";
 
   return CommonNavigationParams(
       dest_url, dest_referrer, GetTransitionType(), navigation_type,
       !IsViewSourceMode(), should_replace_entry(), ui_timestamp, report_type,
-      GetBaseURLForDataURL(), GetHistoryURLForDataURL(), lofi_state,
+      GetBaseURLForDataURL(), GetHistoryURLForDataURL(), previews_state,
       navigation_start, method, post_body ? post_body : post_data_);
 }
 
 StartNavigationParams NavigationEntryImpl::ConstructStartNavigationParams()
     const {
   return StartNavigationParams(extra_headers(),
                                transferred_global_request_id().child_id,
                                transferred_global_request_id().request_id);
 }
 
@@ skipping 248 matching lines @@
       return node;
 
     // Enqueue any children and keep looking.
     for (auto* child : node->children)
       work_queue.push(child);
   }
   return nullptr;
 }
 
 }  // namespace content