Provision to start base::SimpleTestTickClock at initial ticks

media/cast/test/cast_benchmarks.cc

Index: media/cast/test/cast_benchmarks.cc
diff --git a/media/cast/test/cast_benchmarks.cc b/media/cast/test/cast_benchmarks.cc
index dcd433e756f0018080bb8f7201fca91f36291d0f..1e876cce7507da71601e28f5d37a2acb86bf35bb 100644
--- a/media/cast/test/cast_benchmarks.cc
+++ b/media/cast/test/cast_benchmarks.cc
@@ -203,6 +203,8 @@ class RunOneBenchmark {
  public:
   RunOneBenchmark()
       : start_time_(),
+        testing_clock_(base::TimeTicks() +
+                       base::TimeDelta::FromMilliseconds(kStartMillisecond)),
         task_runner_(new test::FakeSingleThreadTaskRunner(&testing_clock_)),
         testing_clock_sender_(new test::SkewedTickClock(&testing_clock_)),
         task_runner_sender_(
@@ -224,10 +226,7 @@ class RunOneBenchmark {
         sender_to_receiver_(cast_environment_sender_),
         video_bytes_encoded_(0),
         audio_bytes_encoded_(0),
-        frames_sent_(0) {
-    testing_clock_.Advance(
-        base::TimeDelta::FromMilliseconds(kStartMillisecond));
-  }
+        frames_sent_(0) {}
 
   void Configure(Codec video_codec,
                  Codec audio_codec) {