Make a separate histogram for MatchComplete Final Status'es and

chrome/browser/prerender/prerender_manager.h

Index: chrome/browser/prerender/prerender_manager.h
===================================================================
--- chrome/browser/prerender/prerender_manager.h	(revision 118385)
+++ chrome/browser/prerender/prerender_manager.h	(working copy)
@@ -205,6 +205,15 @@
                          uint8 experiment_id,
                          FinalStatus final_status) const;
 
+  // Record a final status of a prerendered page in a histogram.
+  // This variation allows specifying whether prerendering had been started
+  // (necessary to flag MatchComplete dummies).
+  void RecordFinalStatusWithMatchCompleteStatus(
+      Origin origin,
+      uint8 experiment_id,
+      PrerenderContents::MatchCompleteStatus mc_status,
+      FinalStatus final_status) const;
+
   const Config& config() const { return config_; }
   Config& mutable_config() { return config_; }
 
@@ -243,6 +252,7 @@
   FRIEND_TEST_ALL_PREFIXES(PrerenderManagerTest, FragmentMatchesPageTest);
   FRIEND_TEST_ALL_PREFIXES(PrerenderManagerTest, PageMatchesFragmentTest);
   FRIEND_TEST_ALL_PREFIXES(PrerenderManagerTest, PendingPrerenderTest);
+  FRIEND_TEST_ALL_PREFIXES(PrerenderManagerTest, ControlGroupVisited);
   FRIEND_TEST_ALL_PREFIXES(PrerenderManagerTest, RateLimitInWindowTest);
   FRIEND_TEST_ALL_PREFIXES(PrerenderManagerTest, RateLimitOutsideWindowTest);
   FRIEND_TEST_ALL_PREFIXES(PrerenderManagerTest, SourceRenderViewClosed);