Provision to start base::SimpleTestTickClock at initial ticks

components/copresence/handlers/audio/audio_directive_handler_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 <string>
 #include <vector>
 
 #include "base/bind.h"
@@ skipping 31 matching lines @@
   return directive;
 }
 
 }  // namespace
 
 class AudioDirectiveHandlerTest : public testing::Test {
  public:
   AudioDirectiveHandlerTest() {
     modem_ptr_ = new StubModem;
     timer_ptr_ = new base::MockTimer(false, false);
-    clock_ptr_ = new base::SimpleTestTickClock;
+    clock_ptr_ = new base::SimpleTestTickClock(base::TimeTicks());
 
     directive_handler_.reset(new AudioDirectiveHandlerImpl(
         base::Bind(&AudioDirectiveHandlerTest::GetDirectiveUpdates,
                    base::Unretained(this)),
         make_scoped_ptr<audio_modem::Modem>(modem_ptr_),
         make_scoped_ptr<base::Timer>(timer_ptr_),
         make_scoped_refptr(new TickClockRefCounted(clock_ptr_))));
     directive_handler_->Initialize(nullptr, audio_modem::TokensCallback());
   }
   ~AudioDirectiveHandlerTest() override {}
@@ skipping 106 matching lines @@
   // Advance to +11ms.
   clock_ptr_->Advance(twoMs);
   timer_ptr_->Fire();
   EXPECT_FALSE(IsRecording(AUDIBLE));
 }
 
 // TODO(rkc): Write more tests that check more convoluted sequences of
 // transmits/receives.
 
 }  // namespace copresence