Support for defered media load to cast_content_render_client.

chromecast/base/metrics/cast_metrics_helper.cc

Index: chromecast/base/metrics/cast_metrics_helper.cc
diff --git a/chromecast/base/metrics/cast_metrics_helper.cc b/chromecast/base/metrics/cast_metrics_helper.cc
index 8ac2fe620e6bfde47fe8aa46738fcaecef779c44..35188bce844841c0343528542b920b4e04291ca3 100644
--- a/chromecast/base/metrics/cast_metrics_helper.cc
+++ b/chromecast/base/metrics/cast_metrics_helper.cc
@@ -151,6 +151,15 @@ void CastMetricsHelper::LogMediaPause() {
       sdk_version_));
 }
 
+void CastMetricsHelper::LogTimeToFirstPaint() {
+  MAKE_SURE_THREAD(LogTimeToFirstPaint);
+  base::TimeDelta launch_time = base::TimeTicks::Now() - app_start_time_;
+  const std::string uma_name(GetMetricsNameWithAppName("Startup",
+                                                       "TimeToFirstPaint"));
+  LogMediumTimeHistogramEvent(uma_name, launch_time);
+  LOG(INFO) << uma_name << " is " << launch_time.InSecondsF() << " seconds.";
+}
+
 void CastMetricsHelper::LogTimeToDisplayVideo() {
   if (!new_startup_time_) {  // For faster check.
     return;