Attempt an on-demand time fetch when encountering a date invalid error

components/ssl_errors/error_classification_unittest.cc

 // Copyright 2015 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/ssl_errors/error_classification.h"
 
 #include "base/files/file_path.h"
 #include "base/memory/ptr_util.h"
 #include "base/message_loop/message_loop.h"
 #include "base/strings/string_split.h"
@@ skipping 339 matching lines @@
   clock->Advance(base::TimeDelta::FromDays(111));
   tick_clock->Advance(base::TimeDelta::FromDays(222));
 
   base::MessageLoop loop;
   network_time::NetworkTimeTracker network_time_tracker(
       std::unique_ptr<base::Clock>(clock),
       std::unique_ptr<base::TickClock>(tick_clock), &pref_service,
       new net::TestURLRequestContextGetter(io_thread.task_runner()));
   network_time_tracker.SetTimeServerURLForTesting(test_server.GetURL("/"));
   field_trial_test()->SetNetworkQueriesWithVariationsService(
-      true, 0.0, network_time::FieldTrialTest::ENABLE_FETCHES_ON_DEMAND);
+      true, 0.0,
+      network_time::FieldTrialTest::FETCHES_IN_BACKGROUND_AND_ON_DEMAND);
 
   // No sync attempt.
   EXPECT_EQ(
       ssl_errors::ClockState::CLOCK_STATE_UNKNOWN,
       ssl_errors::GetClockState(base::Time::Now(), &network_time_tracker));
   histograms.ExpectTotalCount(kNetworkTimeHistogram, 1);
   histograms.ExpectBucketCount(
       kNetworkTimeHistogram,
       ssl_errors::NETWORK_CLOCK_STATE_UNKNOWN_NO_SYNC_ATTEMPT, 1);
 
@@ skipping 71 matching lines @@
   clock->Advance(base::TimeDelta::FromDays(1));
   // GetClockState() will fall back to the build time heuristic.
   ssl_errors::GetClockState(clock->Now(), &network_time_tracker);
   histograms.ExpectTotalCount(kNetworkTimeHistogram, 8);
   histograms.ExpectBucketCount(
       kNetworkTimeHistogram, ssl_errors::NETWORK_CLOCK_STATE_UNKNOWN_SYNC_LOST,
       1);
 
   io_thread.Stop();
 }