Track when QUIC connections are application limited. Protected by quic_enable_app_limited_check.

net/quic/core/quic_multipath_sent_packet_manager.cc

 // Copyright (c) 2012 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_multipath_sent_packet_manager.h"
 
 #include <cstdint>
 
 #include "base/strings/string_number_conversions.h"
 #include "net/quic/core/quic_bug_tracker.h"
@@ skipping 499 matching lines @@
                                     ConnectionCloseSource::FROM_SELF);
     return;
   }
   const string error_details = "Sent packet manager of path: (" +
                                base::IntToString(path_id) +
                                ") must be active but is not.";
   delegate_->OnUnrecoverableError(QUIC_MULTIPATH_PATH_NOT_ACTIVE, error_details,
                                   ConnectionCloseSource::FROM_SELF);
 }
 
+void QuicMultipathSentPacketManager::OnApplicationLimited() {
+  for (PathSentPacketManagerInfo& path_manager_info : path_managers_info_) {
+    if (path_manager_info.manager == nullptr ||
+        path_manager_info.state != ACTIVE) {
+      continue;
+    }
+    path_manager_info.manager->OnApplicationLimited();
+  }
+}
+
 }  // namespace net