Make a separate histogram for MatchComplete Final Status'es and

chrome/browser/prerender/prerender_histograms.cc

Index: chrome/browser/prerender/prerender_histograms.cc
===================================================================
--- chrome/browser/prerender/prerender_histograms.cc	(revision 118385)
+++ chrome/browser/prerender/prerender_histograms.cc	(working copy)
@@ -266,6 +266,17 @@
       UMA_HISTOGRAM_ENUMERATION(name, final_status, FINAL_STATUS_MAX));
 }
 
+void PrerenderHistograms::RecordMatchCompleteFinalStatus(
+    Origin origin,
+    uint8 experiment_id,
+    FinalStatus final_status) const {
+  DCHECK(final_status != FINAL_STATUS_MAX);
+  PREFIXED_HISTOGRAM_ORIGIN_EXPERIMENT(
+      base::FieldTrial::MakeName("FinalStatusMatchComplete", "Prerender"),
+      origin, experiment_id,
+      UMA_HISTOGRAM_ENUMERATION(name, final_status, FINAL_STATUS_MAX));
+}
+
 uint8 PrerenderHistograms::GetCurrentExperimentId() const {
   if (!WithinWindow())
     return kNoExperiment;