Add tests for Chrome Stability Metrics.

chrome/browser/metrics/chrome_metrics_service_client.cc

Index: chrome/browser/metrics/chrome_metrics_service_client.cc
diff --git a/chrome/browser/metrics/chrome_metrics_service_client.cc b/chrome/browser/metrics/chrome_metrics_service_client.cc
index f7f44b52ba5f9ec993eded2bf4e5ea1a86288412..bf5b391e864a70a2e449a5547e18cd2c5a434c6b 100644
--- a/chrome/browser/metrics/chrome_metrics_service_client.cc
+++ b/chrome/browser/metrics/chrome_metrics_service_client.cc
@@ -315,7 +315,8 @@ void ChromeMetricsServiceClient::Initialize() {
       scoped_ptr<metrics::MetricsProvider>(new OmniboxMetricsProvider(
           base::Bind(&chrome::IsOffTheRecordSessionActive))));
   metrics_service_->RegisterMetricsProvider(
-      scoped_ptr<metrics::MetricsProvider>(new ChromeStabilityMetricsProvider));
+      scoped_ptr<metrics::MetricsProvider>(new ChromeStabilityMetricsProvider(
+          g_browser_process->local_state())));
   metrics_service_->RegisterMetricsProvider(
       scoped_ptr<metrics::MetricsProvider>(new metrics::GPUMetricsProvider));