Deprecate FLAGS_quic_reloadable_flag_quic_flow_control_faster_autotune.

net/quic/core/quic_flow_controller.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 "net/quic/core/quic_flow_controller.h"
 
 #include <cstdint>
 
 #include "net/quic/core/quic_connection.h"
 #include "net/quic/core/quic_packets.h"
@@ skipping 168 matching lines @@
 }
 
 void QuicFlowController::MaybeSendWindowUpdate() {
   // Send WindowUpdate to increase receive window if
   // (receive window offset - consumed bytes) < (max window / 2).
   // This is behaviour copied from SPDY.
   DCHECK_LE(bytes_consumed_, receive_window_offset_);
   QuicStreamOffset available_window = receive_window_offset_ - bytes_consumed_;
   QuicByteCount threshold = WindowUpdateThreshold();
 
-  if (FLAGS_quic_reloadable_flag_quic_flow_control_faster_autotune &&
-      !prev_window_update_time_.IsInitialized()) {
-    QUIC_FLAG_COUNT(quic_reloadable_flag_quic_flow_control_faster_autotune);
+  if (!prev_window_update_time_.IsInitialized()) {
     // Treat the initial window as if it is a window update, so if 1/2 the
     // window is used in less than 2 RTTs, the window is increased.
     prev_window_update_time_ = connection_->clock()->ApproximateNow();
   }
 
   if (available_window >= threshold) {
     QUIC_DVLOG(1) << ENDPOINT << "Not sending WindowUpdate for stream " << id_
                   << ", available window: " << available_window
                   << " >= threshold: " << threshold;
     return;
@@ skipping 88 matching lines @@
   }
   receive_window_size_ = size;
   receive_window_offset_ = size;
 }
 
 void QuicFlowController::SendWindowUpdate() {
   connection_->SendWindowUpdate(id_, receive_window_offset_);
 }
 
 }  // namespace net