Provision to start base::SimpleTestTickClock at initial ticks

media/cast/sender/video_sender_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 <stddef.h>
 #include <stdint.h>
 
 #include <vector>
 
 #include "base/bind.h"
@@ skipping 125 matching lines @@
       VideoFrameMetadata::FRAME_DURATION,
       base::TimeDelta::FromSecondsD(1.0 / frame_rate));
   return frame;
 }
 
 }  // namespace
 
 class VideoSenderTest : public ::testing::Test {
  protected:
   VideoSenderTest()
-      : 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_)),
         operational_status_(STATUS_UNINITIALIZED),
         vea_factory_(task_runner_) {
-    testing_clock_->Advance(base::TimeTicks::Now() - base::TimeTicks());
     vea_factory_.SetAutoRespond(true);
     last_pixel_value_ = kPixelValue;
     net::IPEndPoint dummy_endpoint;
     transport_sender_.reset(new CastTransportSenderImpl(
         NULL,
         testing_clock_,
         dummy_endpoint,
         dummy_endpoint,
         make_scoped_ptr(new base::DictionaryValue),
         base::Bind(&UpdateCastTransportStatus),
@@ skipping 490 matching lines @@
                  << ", hfr=" << kTestCases[i].high_frame_rate);
     const scoped_refptr<VideoFrame> frame =
         CreateFakeFrame(resolution, kTestCases[i].high_frame_rate);
     EXPECT_EQ(kTestCases[i].expected_bitrate,
               PeerVideoSender::GetMaximumTargetBitrateForFrame(*frame));
   }
 }
 
 }  // namespace cast
 }  // namespace media