Replace uses of raw uint32's with a type-checked RtpTimeTicks data type.

media/cast/cast_testing.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.
 
 {
   'includes': [ 'cast_testing_tools.gypi' ],
   'targets': [
     {
       # GN version: //media/cast:test_support
       'target_name': 'cast_test_utility',
@@ skipping 71 matching lines @@
       'dependencies': [
         'cast_common',
         'cast_sender',
         'cast_test_utility',
         '<(DEPTH)/base/base.gyp:run_all_unittests',
         '<(DEPTH)/net/net.gyp:net',
         '<(DEPTH)/testing/gmock.gyp:gmock',
         '<(DEPTH)/testing/gtest.gyp:gtest',
       ],
       'sources': [
+        'common/expanded_value_base_unittest.cc',
+        'common/rtp_time_unittest.cc',
         'logging/encoding_event_subscriber_unittest.cc',
         'logging/receiver_time_offset_estimator_impl_unittest.cc',
         'logging/serialize_deserialize_test.cc',
         'logging/simple_event_subscriber_unittest.cc',
         'logging/stats_event_subscriber_unittest.cc',
         'net/cast_transport_sender_impl_unittest.cc',
         'net/frame_id_wrap_helper_test.cc',
         'net/mock_cast_transport_sender.cc',
         'net/mock_cast_transport_sender.h',
         'net/pacing/mock_paced_packet_sender.cc',
@@ skipping 106 matching lines @@
                   '<(DEPTH)/tools/xdisplaycheck/xdisplaycheck.gyp:xdisplaycheck',
                 ],
               }
             ],
           ],
         },
       ],
     }], # test_isolation_mode != "noop"
   ], # conditions
 }