Provision to start base::SimpleTestTickClock at initial ticks

media/cast/sender/h264_vt_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 <queue>
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 205 matching lines @@
 
  private:
   bool IsOnBatteryPowerImpl() final { return false; }
 };
 
 class H264VideoToolboxEncoderTest : public ::testing::Test {
  protected:
   H264VideoToolboxEncoderTest() = default;
 
   void SetUp() final {
-    clock_ = new base::SimpleTestTickClock();
-    clock_->Advance(base::TimeTicks::Now() - base::TimeTicks());
+    clock_ = new base::SimpleTestTickClock(base::TimeTicks::Now());
 
     power_source_ = new TestPowerSource();
     power_monitor_.reset(
         new base::PowerMonitor(scoped_ptr<TestPowerSource>(power_source_)));
 
     cast_environment_ = new CastEnvironment(
         scoped_ptr<base::TickClock>(clock_).Pass(),
         message_loop_.task_runner(), message_loop_.task_runner(),
         message_loop_.task_runner());
     encoder_.reset(new H264VideoToolboxEncoder(
@@ skipping 174 matching lines @@
       gfx::Size(kVideoWidth, kVideoHeight), base::TimeDelta()));
 
   // After a power resume event, the factory should produce frames right away
   // because the encoder re-initializes on its own.
   power_source_->GenerateResumeEvent();
   CreateFrameAndMemsetPlane(video_frame_factory.get());
 }
 
 }  // namespace cast
 }  // namespace media