Require explicit selection of traits for LazyInstance

components/autofill/core/common/autofill_clock.cc

 // Copyright 2017 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 "components/autofill/core/common/autofill_clock.h"
 
 #include <utility>
 
 #include "base/time/clock.h"
 #include "base/time/default_clock.h"
 
 namespace autofill {
 
 namespace {
 
-static base::LazyInstance<AutofillClock> g_autofill_clock =
+static base::LazyInstance<AutofillClock>::DestructorAtExit g_autofill_clock =
     LAZY_INSTANCE_INITIALIZER;
 
 }  // namespace
 
 // static
 base::Time AutofillClock::Now() {
   if (!g_autofill_clock.Get().clock_)
     SetClock();
 
   return g_autofill_clock.Get().clock_->Now();
 }
 
 AutofillClock::AutofillClock(){};
 AutofillClock::~AutofillClock(){};
 
 // static
 void AutofillClock::SetClock() {
   g_autofill_clock.Get().clock_.reset(new base::DefaultClock());
 }
 
 // static
 void AutofillClock::SetTestClock(std::unique_ptr<base::Clock> clock) {
   DCHECK(clock);
   g_autofill_clock.Get().clock_ = std::move(clock);
 }
 
 }  // namespace autofill