[Autofill] Remove direct use of base::Time::Now() in Autofill

components/autofill/core/browser/test_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/browser/test_autofill_clock.h"
+
+#include <utility>
+
+#include "base/test/simple_test_clock.h"
+#include "components/autofill/core/common/autofill_clock.h"
+
+namespace autofill {
+
+TestAutofillClock::TestAutofillClock() {
+  // Create a new test clock and set it as the AutofillClock clock and keep a
+  // pointer to manipulate the time it returns.
+  std::unique_ptr<base::SimpleTestClock> unique_test_clock(
+      new base::SimpleTestClock());
+  // Keep a pointer to the clock to be able to use its SetNow() function.
+  test_clock_ = unique_test_clock.get();
+  AutofillClock::SetTestClock(std::move(unique_test_clock));
+}
+
+TestAutofillClock::~TestAutofillClock() {
+  // Destroys the test clock and resets a normal clock.
+  AutofillClock::SetClock();
+}
+
+void TestAutofillClock::SetNow(base::Time now) {
+  test_clock_->SetNow(now);
+}
+
+}  // namespace autofill