Provision to start base::SimpleTestTickClock at initial ticks

media/cast/net/cast_transport_sender_impl_unittest.cc

Index: media/cast/net/cast_transport_sender_impl_unittest.cc
diff --git a/media/cast/net/cast_transport_sender_impl_unittest.cc b/media/cast/net/cast_transport_sender_impl_unittest.cc
index 8c1a9b2b890608a85b3345e7ea15d6017137a43c..ec50e1b77bbc6acbcd6ea2e9ed6c0de4eeef557b 100644
--- a/media/cast/net/cast_transport_sender_impl_unittest.cc
+++ b/media/cast/net/cast_transport_sender_impl_unittest.cc
@@ -68,9 +68,10 @@ class FakePacketSender : public PacketSender {
 
 class CastTransportSenderImplTest : public ::testing::Test {
  protected:
-  CastTransportSenderImplTest() : num_times_logging_callback_called_(0) {
-    testing_clock_.Advance(
-        base::TimeDelta::FromMilliseconds(kStartMillisecond));
+  CastTransportSenderImplTest()
+      : testing_clock_(base::TimeTicks() +
+                       base::TimeDelta::FromMilliseconds(kStartMillisecond)),
+        num_times_logging_callback_called_(0) {
     task_runner_ = new test::FakeSingleThreadTaskRunner(&testing_clock_);
   }