Add a QuicSustainedBandwidthEstimator class. Not yet used.

net/net.gypi

 # 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.
 
 # This file is shared between the regular GYP build, the NaCl GYP build, and
 # the GN build. For GN support, it must have no conditionals or anything like
 # that beyond the simple one-level-deep dictionary of values.
 {
   'variables': {
     # Subset of net source files that are compiled for NaCl (net_nacl target).
@@ skipping 907 matching lines @@
       'quic/quic_server_id.cc',
       'quic/quic_server_id.h',
       'quic/quic_session.cc',
       'quic/quic_session.h',
       'quic/quic_socket_address_coder.cc',
       'quic/quic_socket_address_coder.h',
       'quic/quic_stream_factory.cc',
       'quic/quic_stream_factory.h',
       'quic/quic_stream_sequencer.cc',
       'quic/quic_stream_sequencer.h',
+      'quic/quic_sustained_bandwidth_recorder.cc',
+      'quic/quic_sustained_bandwidth_recorder.h',
       'quic/quic_time.cc',
       'quic/quic_time.h',
       'quic/quic_types.cc',
       'quic/quic_types.h',
       'quic/quic_unacked_packet_map.cc',
       'quic/quic_unacked_packet_map.h',
       'quic/quic_utils.cc',
       'quic/quic_utils.h',
       'quic/quic_utils_chromium.h',
       'quic/quic_write_blocked_list.cc',
@@ skipping 602 matching lines @@
       'quic/quic_received_packet_manager_test.cc',
       'quic/quic_reliable_client_stream_test.cc',
       'quic/quic_sent_entropy_manager_test.cc',
       'quic/quic_sent_packet_manager_test.cc',
       'quic/quic_server_id_test.cc',
       'quic/quic_server_test.cc',
       'quic/quic_session_test.cc',
       'quic/quic_socket_address_coder_test.cc',
       'quic/quic_stream_factory_test.cc',
       'quic/quic_stream_sequencer_test.cc',
+      'quic/quic_sustained_bandwidth_recorder_test.cc',
       'quic/quic_time_test.cc',
       'quic/quic_unacked_packet_map_test.cc',
       'quic/quic_utils_chromium_test.cc',
       'quic/quic_utils_test.cc',
       'quic/quic_write_blocked_list_test.cc',
       'quic/reliable_quic_stream_test.cc',
       'server/http_server_response_info_unittest.cc',
       'server/http_server_unittest.cc',
       'socket/client_socket_pool_base_unittest.cc',
       'socket/deterministic_socket_data_unittest.cc',
@@ skipping 171 matching lines @@
       'tools/quic/test_tools/quic_test_client.h',
       'tools/quic/test_tools/quic_test_utils.cc',
       'tools/quic/test_tools/quic_test_utils.h',
       'tools/quic/test_tools/server_thread.h',
       'tools/quic/test_tools/server_thread.cc',
       'tools/quic/test_tools/simple_client.h',
       'tools/quic/test_tools/simple_client.cc',
     ],
   }
 }