Change net::LOAD_MAIN_FRAME to net::LOAD_MAIN_FRAME_DEPRECATED to discourage

net/nqe/network_quality_estimator.cc

 // Copyright 2015 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 "net/nqe/network_quality_estimator.h"
 
 #include <algorithm>
 #include <cmath>
 #include <limits>
 #include <utility>
@@ skipping 625 matching lines @@
 
   if (!RequestSchemeIsHTTPOrHTTPS(request) ||
       !RequestProvidesRTTObservation(request)) {
     return;
   }
 
   const base::TimeTicks now = tick_clock_->NowTicks();
 
   // Update |estimated_quality_at_last_main_frame_| if this is a main frame
   // request.
-  if (request.load_flags() & LOAD_MAIN_FRAME) {
+  if (request.load_flags() & LOAD_MAIN_FRAME_DEPRECATED) {
     last_main_frame_request_ = now;
     base::TimeDelta estimated_http_rtt;
     if (!GetHttpRTTEstimate(&estimated_http_rtt))
       estimated_http_rtt = nqe::internal::InvalidRTT();
 
     base::TimeDelta estimated_transport_rtt;
     if (!GetTransportRTTEstimate(&estimated_transport_rtt))
       estimated_transport_rtt = nqe::internal::InvalidRTT();
 
     int32_t downstream_throughput_kbps;
@@ skipping 1046 matching lines @@
   if (effective_connection_type_ != EFFECTIVE_CONNECTION_TYPE_UNKNOWN) {
     network_quality_store_->Add(
         current_network_id_,
         nqe::internal::CachedNetworkQuality(
             tick_clock_->NowTicks(), estimated_quality_at_last_main_frame_,
             effective_connection_type_));
   }
 }
 
 }  // namespace net