Initial support for Renderer Side Histograms...

chrome/browser/metrics/metrics_service.cc

Index: chrome/browser/metrics/metrics_service.cc
===================================================================
--- chrome/browser/metrics/metrics_service.cc	(revision 10329)
+++ chrome/browser/metrics/metrics_service.cc	(working copy)
@@ -1755,9 +1755,21 @@
   RecordPluginChanges(pref);
 }
 
+void MetricsService::CollectRendererHistograms() {
+  for (RenderProcessHost::iterator it = RenderProcessHost::begin();
+       it != RenderProcessHost::end(); ++it) {
+    it->second->Send(new ViewMsg_GetRendererHistograms());
+  }
+}
+
 void MetricsService::RecordCurrentHistograms() {
   DCHECK(current_log_);
 
+  CollectRendererHistograms();
+
+  // TODO(raman): Delay the metrics collection activities until we get all the
+  // updates from the renderers, or we time out (1 second?  3 seconds?).
+
   StatisticsRecorder::Histograms histograms;
   StatisticsRecorder::GetHistograms(&histograms);
   for (StatisticsRecorder::Histograms::iterator it = histograms.begin();