Provision to start base::SimpleTestTickClock at initial ticks

chrome/browser/captive_portal/captive_portal_service_unittest.cc

Index: chrome/browser/captive_portal/captive_portal_service_unittest.cc
diff --git a/chrome/browser/captive_portal/captive_portal_service_unittest.cc b/chrome/browser/captive_portal/captive_portal_service_unittest.cc
index 6b73a0d2d565fbc59e65bd4cf2eff568affd5717..2c9ddf19101e84ca36cb185522d60125bad05523 100644
--- a/chrome/browser/captive_portal/captive_portal_service_unittest.cc
+++ b/chrome/browser/captive_portal/captive_portal_service_unittest.cc
@@ -102,8 +102,7 @@ class CaptivePortalServiceTest : public testing::Test,
     CaptivePortalService::set_state_for_testing(testing_state);
 
     profile_.reset(new TestingProfile());
-    tick_clock_.reset(new base::SimpleTestTickClock());
-    tick_clock_->Advance(base::TimeTicks::Now() - tick_clock_->NowTicks());
+    tick_clock_.reset(new base::SimpleTestTickClock(base::TimeTicks::Now()));
     service_.reset(new CaptivePortalService(profile_.get(), tick_clock_.get()));
 
     // Use no delays for most tests.