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

media/cast/BUILD.gn

 # 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.
 
 import("//build/config/android/config.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//testing/test.gni")
 import("//third_party/protobuf/proto_library.gni")
 
 proto_library("logging_proto") {
   sources = [
     "logging/proto/raw_events.proto",
   ]
 }
 
 # Common code shared by all cast components.
 source_set("common") {
   sources = [
     "cast_config.cc",
     "cast_config.h",
     "cast_defines.h",
     "cast_environment.cc",
     "cast_environment.h",
     "common/clock_drift_smoother.cc",
     "common/clock_drift_smoother.h",
+    "common/expanded_value_base.h",
+    "common/rtp_time.cc",
+    "common/rtp_time.h",
     "common/transport_encryption_handler.cc",
     "common/transport_encryption_handler.h",
     "constants.h",
     "logging/encoding_event_subscriber.cc",
     "logging/encoding_event_subscriber.h",
     "logging/log_deserializer.cc",
     "logging/log_deserializer.h",
     "logging/log_event_dispatcher.cc",
     "logging/log_event_dispatcher.h",
     "logging/log_serializer.cc",
@@ skipping 57 matching lines @@
     "net/rtp/rtp_parser.h",
     "net/rtp/rtp_sender.cc",
     "net/rtp/rtp_sender.h",
     "net/udp_transport.cc",
     "net/udp_transport.h",
   ]
 
   deps = [
     ":common",
   ]
+
+  public_deps = [
+    ":common",
+  ]
 }
 
 source_set("sender") {
   sources = [
     "cast_sender.h",
     "cast_sender_impl.cc",
     "cast_sender_impl.h",
     "sender/audio_encoder.cc",
     "sender/audio_encoder.h",
     "sender/audio_sender.cc",
@@ skipping 180 matching lines @@
 # The _run targets exist only for compatibility w/ GYP.
 group("cast_unittests_run") {
   testonly = true
   deps = [
     ":cast_unittests",
   ]
 }
 
 test("cast_unittests") {
   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 225 matching lines @@
   deps = [
     ":sender",
   ]
 }
 
 static_library("cast_receiver") {
   deps = [
     ":receiver",
   ]
 }