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

content/browser/frame_host/navigation_request.cc

 // Copyright 2014 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_request.h"
 
 #include <utility>
 
 #include "base/memory/ptr_util.h"
 #include "content/browser/appcache/appcache_navigation_handle.h"
@@ skipping 183 matching lines @@
 }  // namespace
 
 // static
 std::unique_ptr<NavigationRequest> NavigationRequest::CreateBrowserInitiated(
     FrameTreeNode* frame_tree_node,
     const GURL& dest_url,
     const Referrer& dest_referrer,
     const FrameNavigationEntry& frame_entry,
     const NavigationEntryImpl& entry,
     FrameMsg_Navigate_Type::Value navigation_type,
-    LoFiState lofi_state,
+    PreviewsState previews_state,
     bool is_same_document_history_load,
     bool is_history_navigation_in_new_child,
     const base::TimeTicks& navigation_start,
     NavigationControllerImpl* controller) {
   // Fill POST data in the request body.
   scoped_refptr<ResourceRequestBodyImpl> request_body;
   if (frame_entry.method() == "POST")
     request_body = frame_entry.GetPostData();
 
   base::Optional<url::Origin> initiator =
       frame_tree_node->IsMainFrame()
           ? base::Optional<url::Origin>()
           : base::Optional<url::Origin>(
                 frame_tree_node->frame_tree()->root()->current_origin());
 
   // While the navigation was started via the LoadURL path it may have come from
   // the renderer in the first place as part of OpenURL.
   bool browser_initiated = !entry.is_renderer_initiated();
 
   std::unique_ptr<NavigationRequest> navigation_request(new NavigationRequest(
       frame_tree_node, entry.ConstructCommonNavigationParams(
                            frame_entry, request_body, dest_url, dest_referrer,
-                           navigation_type, lofi_state, navigation_start),
+                           navigation_type, previews_state, navigation_start),
       BeginNavigationParams(entry.extra_headers(), net::LOAD_NORMAL,
                             false,  // has_user_gestures
                             false,  // skip_service_worker
                             REQUEST_CONTEXT_TYPE_LOCATION, initiator),
       entry.ConstructRequestNavigationParams(
           frame_entry, is_same_document_history_load,
           is_history_navigation_in_new_child,
           entry.GetSubframeUniqueNames(frame_tree_node),
           frame_tree_node->has_committed_real_load(),
           controller->GetPendingEntryIndex() == -1,
@@ skipping 245 matching lines @@
       did_create_service_worker_host
           ? navigation_handle_->service_worker_handle()
                 ->service_worker_provider_host_id()
           : kInvalidServiceWorkerProviderId;
 
   request_params_.appcache_host_id =
       navigation_handle_->appcache_handle()
           ? navigation_handle_->appcache_handle()->appcache_host_id()
           : kAppCacheNoHostId;
 
-  // Update the lofi state of the request.
-  if (response->head.is_using_lofi)
-    common_params_.lofi_state = LOFI_ON;
-  else
-    common_params_.lofi_state = LOFI_OFF;
+  // Update the previews state of the request.
+  common_params_.previews_state = response->head.previews_state;
 
   // Select an appropriate renderer to commit the navigation.
   RenderFrameHostImpl* render_frame_host = nullptr;
   if (response_should_be_rendered_) {
     render_frame_host =
         frame_tree_node_->render_manager()->GetFrameHostForNavigation(*this);
     NavigatorImpl::CheckWebUIRendererDoesNotDisplayNormalURL(
         render_frame_host, common_params_.url);
   }
   DCHECK(render_frame_host || !response_should_be_rendered_);
@@ skipping 206 matching lines @@
   DCHECK_EQ(request_params_.has_user_gesture, begin_params_.has_user_gesture);
 
   render_frame_host->CommitNavigation(response_.get(), std::move(body_),
                                       common_params_, request_params_,
                                       is_view_source_);
 
   frame_tree_node_->ResetNavigationRequest(true);
 }
 
 }  // namespace content