Add QuicStrCat.

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 1197 matching lines @@
       'quic/platform/api/quic_clock.cc',
       'quic/platform/api/quic_clock.h',
       'quic/platform/api/quic_ip_address_family.h',
       'quic/platform/api/quic_ip_address.cc',
       'quic/platform/api/quic_ip_address.h',
       'quic/platform/api/quic_mutex.cc',
       'quic/platform/api/quic_mutex.h',
       'quic/platform/api/quic_reference_counted.h',
       'quic/platform/api/quic_socket_address.cc',
       'quic/platform/api/quic_socket_address.h',
+      'quic/platform/api/quic_str_cat.h',
       'quic/platform/impl/quic_chromium_clock.cc',
       'quic/platform/impl/quic_chromium_clock.h',
       'quic/platform/impl/quic_ip_address_impl.cc',
       'quic/platform/impl/quic_ip_address_impl.h',
       'quic/platform/impl/quic_mutex_impl.cc',
       'quic/platform/impl/quic_mutex_impl.h',
       'quic/platform/impl/quic_reference_counted_impl.h',
       'quic/platform/impl/quic_socket_address_impl.cc',
       'quic/platform/impl/quic_socket_address_impl.h',
+      'quic/platform/impl/quic_str_cat_impl.h',
       'quic/quartc/quartc_alarm_factory.cc',
       'quic/quartc/quartc_alarm_factory.h',
       'quic/quartc/quartc_factory.cc',
       'quic/quartc/quartc_factory.h',
       'quic/quartc/quartc_factory_interface.h',
       'quic/quartc/quartc_packet_writer.cc',
       'quic/quartc/quartc_packet_writer.h',
       'quic/quartc/quartc_session.cc',
       'quic/quartc/quartc_session.h',
       'quic/quartc/quartc_session_interface.h',
@@ skipping 714 matching lines @@
       'quic/core/quic_sustained_bandwidth_recorder_test.cc',
       'quic/core/quic_tag_test.cc',
       'quic/core/quic_time_test.cc',
       'quic/core/quic_unacked_packet_map_test.cc',
       'quic/core/quic_utils_test.cc',
       'quic/core/quic_version_manager_test.cc',
       'quic/core/quic_versions_test.cc',
       'quic/core/quic_write_blocked_list_test.cc',
       'quic/core/spdy_utils_test.cc',
       'quic/platform/api/quic_reference_counted_test.cc',
+      'quic/platform/api/quic_str_cat_test.cc',
       'quic/platform/impl/quic_chromium_clock_test.cc',
       'quic/quartc/quartc_alarm_factory_test.cc',
       'quic/quartc/quartc_session_test.cc',
       'quic/quartc/quartc_stream_test.cc',
       'quic/test_tools/crypto_test_utils.cc',
       'quic/test_tools/crypto_test_utils.h',
       'quic/test_tools/crypto_test_utils_test.cc',
       'quic/test_tools/delayed_verify_strike_register_client.cc',
       'quic/test_tools/delayed_verify_strike_register_client.h',
       'quic/test_tools/fake_proof_source.cc',
@@ skipping 1585 matching lines @@
       'tools/domain_security_preload_generator/preloaded_state_generator.h',
       'tools/domain_security_preload_generator/spki_hash.cc',
       'tools/domain_security_preload_generator/spki_hash.h',
       'tools/domain_security_preload_generator/trie/trie_bit_buffer.cc',
       'tools/domain_security_preload_generator/trie/trie_bit_buffer.h',
       'tools/domain_security_preload_generator/trie/trie_writer.cc',
       'tools/domain_security_preload_generator/trie/trie_writer.h',
     ],
   }
 }