Add a QuicChromiumClock and make QuicClock abstract to match internal code.

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 1129 matching lines @@
       'quic/core/quic_utils.cc',
       'quic/core/quic_utils.h',
       'quic/core/quic_version_manager.cc',
       'quic/core/quic_version_manager.h',
       'quic/core/quic_versions.cc',
       'quic/core/quic_versions.h',
       'quic/core/quic_write_blocked_list.cc',
       'quic/core/quic_write_blocked_list.h',
       'quic/core/spdy_utils.cc',
       'quic/core/spdy_utils.h',
+      '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_socket_address.cc',
       'quic/platform/api/quic_socket_address.h',
-      'quic/platform/impl/quic_clock.cc',
+      '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_socket_address_impl.cc',
       'quic/platform/impl/quic_socket_address_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',
@@ skipping 606 matching lines @@
       'quic/core/frames/quic_frame_test.cc',
       'quic/core/interval_set_test.cc',
       'quic/core/interval_test.cc',
       'quic/core/quic_address_mismatch_test.cc',
       'quic/core/quic_alarm_test.cc',
       'quic/core/quic_arena_scoped_ptr_test.cc',
       'quic/core/quic_bandwidth_test.cc',
       'quic/core/quic_buffered_packet_store_test.cc',
       'quic/core/quic_client_promised_info_test.cc',
       'quic/core/quic_client_push_promise_index_test.cc',
-      'quic/core/quic_clock_test.cc',
       'quic/core/quic_config_test.cc',
       'quic/core/quic_connection_test.cc',
       'quic/core/quic_crypto_client_stream_test.cc',
       'quic/core/quic_crypto_server_stream_test.cc',
       'quic/core/quic_crypto_stream_test.cc',
       'quic/core/quic_data_writer_test.cc',
       'quic/core/quic_error_codes_test.cc',
       'quic/core/quic_flow_controller_test.cc',
       'quic/core/quic_framer_test.cc',
       'quic/core/quic_header_list_test.cc',
@@ skipping 18 matching lines @@
       'quic/core/quic_stream_test.cc',
       '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/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',
       'quic/test_tools/fake_proof_source.h',
@@ skipping 1545 matching lines @@
       'third_party/nist-pkits/crls/requireExplicitPolicy5subCACRL.crl',
       'third_party/nist-pkits/crls/requireExplicitPolicy5subsubCACRL.crl',
       'third_party/nist-pkits/crls/requireExplicitPolicy5subsubsubCACRL.crl',
       'third_party/nist-pkits/crls/requireExplicitPolicy7CACRL.crl',
       'third_party/nist-pkits/crls/requireExplicitPolicy7subCARE2CRL.crl',
       'third_party/nist-pkits/crls/requireExplicitPolicy7subsubCARE2RE4CRL.crl',
       'third_party/nist-pkits/crls/requireExplicitPolicy7subsubsubCARE2RE4CRL.crl',
     ],
   }
 }