Provision to start base::SimpleTestTickClock at initial ticks

media/cast/sender/video_encoder_unittest.cc

 // 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.
 
 #include <stdint.h>
 
 #include <utility>
 #include <vector>
 
 #include "base/bind.h"
@@ skipping 16 matching lines @@
 #include "media/cast/sender/h264_vt_encoder.h"
 #endif
 
 namespace media {
 namespace cast {
 
 class VideoEncoderTest
     : public ::testing::TestWithParam<std::pair<Codec, bool>> {
  protected:
   VideoEncoderTest()
-      : testing_clock_(new base::SimpleTestTickClock()),
+      : testing_clock_(new base::SimpleTestTickClock(base::TimeTicks::Now())),
         task_runner_(new test::FakeSingleThreadTaskRunner(testing_clock_)),
         cast_environment_(
             new CastEnvironment(scoped_ptr<base::TickClock>(testing_clock_),
                                 task_runner_,
                                 task_runner_,
                                 task_runner_)),
         video_config_(GetDefaultVideoSenderConfig()),
         operational_status_(STATUS_UNINITIALIZED),
         count_frames_delivered_(0) {
-    testing_clock_->Advance(base::TimeTicks::Now() - base::TimeTicks());
     first_frame_time_ = testing_clock_->NowTicks();
   }
 
   ~VideoEncoderTest() override {}
 
   void SetUp() final {
     video_config_.codec = GetParam().first;
     video_config_.use_external_encoder = GetParam().second;
 
     if (video_config_.use_external_encoder)
@@ skipping 363 matching lines @@
 #endif
   return values;
 }
 }  // namespace
 
 INSTANTIATE_TEST_CASE_P(
     , VideoEncoderTest, ::testing::ValuesIn(DetermineEncodersToTest()));
 
 }  // namespace cast
 }  // namespace media