Delivering the FIRST_NONEMPTY_PAINT phase changing event to base/

chrome/browser/metrics/first_web_contents_profiler.cc

Index: chrome/browser/metrics/first_web_contents_profiler.cc
diff --git a/chrome/browser/metrics/first_web_contents_profiler.cc b/chrome/browser/metrics/first_web_contents_profiler.cc
index ae97bac1bed4d80caea5663f85161163524bca7c..0433d251c18f437304eec67a51ea16c2a5945af5 100644
--- a/chrome/browser/metrics/first_web_contents_profiler.cc
+++ b/chrome/browser/metrics/first_web_contents_profiler.cc
@@ -12,6 +12,8 @@
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_iterator.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
+#include "components/metrics/profiler/tracking_synchronizer.h"
+#include "components/metrics/proto/profiler_event.pb.h"
 
 scoped_ptr<FirstWebContentsProfiler>
 FirstWebContentsProfiler::CreateProfilerForFirstWebContents(
@@ -51,6 +53,9 @@ void FirstWebContentsProfiler::DidFirstVisuallyNonEmptyPaint() {
                                  elapsed);
   }
 
+  metrics::TrackingSynchronizer::OnProfilingPhaseCompleted(
+      metrics::ProfilerEventProto::EVENT_FIRST_NONEMPTY_PAINT);
+
   if (IsFinishedCollectingMetrics())
     FinishedCollectingMetrics();
 }