metrics: call LoginState::Shutdown() at end of unit tests

chrome/browser/metrics/metrics_service_unittest.cc

Index: chrome/browser/metrics/metrics_service_unittest.cc
diff --git a/chrome/browser/metrics/metrics_service_unittest.cc b/chrome/browser/metrics/metrics_service_unittest.cc
index a328dce4ef16a94ab6a4db986816f99b15e6122d..6c5bcd45880b1f936169a3876a1a6e2a3ac0fb6c 100644
--- a/chrome/browser/metrics/metrics_service_unittest.cc
+++ b/chrome/browser/metrics/metrics_service_unittest.cc
@@ -81,6 +81,11 @@ class MetricsServiceTest : public testing::Test {
   virtual ~MetricsServiceTest() {
     MetricsService::SetExecutionPhase(MetricsService::UNINITIALIZED_PHASE,
                                       GetLocalState());
+#if defined(OS_CHROMEOS)
+    // TODO(blundell): Remove this code once MetricsService no longer creates
+    // ChromeOSMetricsProvider.
+    chromeos::LoginState::Shutdown();
+#endif  // defined(OS_CHROMEOS)
   }
 
   metrics::MetricsStateManager* GetMetricsStateManager() {