Delivering the FIRST_NONEMPTY_PAINT phase changing event to base/

chrome/browser/metrics/chrome_metrics_service_client.h

Index: chrome/browser/metrics/chrome_metrics_service_client.h
diff --git a/chrome/browser/metrics/chrome_metrics_service_client.h b/chrome/browser/metrics/chrome_metrics_service_client.h
index 7456d1dc15065b07d4d2322ff0671c26a8eeb1fc..77b55826a20cf7226c55fab487f7c1c16cc3d061 100644
--- a/chrome/browser/metrics/chrome_metrics_service_client.h
+++ b/chrome/browser/metrics/chrome_metrics_service_client.h
@@ -101,8 +101,8 @@ class ChromeMetricsServiceClient
       base::ProcessId process_id,
       content::ProcessType process_type,
       int profiling_phase,
-      base::TimeDelta phase_start,
-      base::TimeDelta phase_finish,
+      base::TimeTicks phase_start,
+      base::TimeTicks phase_finish,
       const metrics::ProfilerEvents& past_profiler_events) override;
   void FinishedReceivingProfilerData() override;
 
@@ -187,6 +187,9 @@ class ChromeMetricsServiceClient
 
   base::WeakPtrFactory<ChromeMetricsServiceClient> weak_ptr_factory_;
 
+  // Time of this object's creation.
+  const base::TimeTicks start_time_;
+
   DISALLOW_COPY_AND_ASSIGN(ChromeMetricsServiceClient);
 };