Updating histograms to allow for experiments & log origin-based histograms.

chrome/browser/prerender/prerender_final_status.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/prerender/prerender_final_status.h"
 
-#include "base/metrics/histogram.h"
 #include "chrome/browser/prerender/prerender_manager.h"
 
 namespace prerender {
 
 namespace {
 
 const char* kFinalStatusNames[] = {
   "Used",
   "Timed Out",
   "Evicted",
@@ skipping 26 matching lines @@
   "Fragment Mismatch",
   "SSL Client Certificate Requested",
   "Cache or History Cleared",
   "Max",
 };
 COMPILE_ASSERT(arraysize(kFinalStatusNames) == FINAL_STATUS_MAX + 1,
                PrerenderFinalStatus_name_count_mismatch);
 
 }
 
-void RecordFinalStatus(Origin origin, FinalStatus final_status) {
-  DCHECK(final_status != FINAL_STATUS_MAX);
-  // FINAL_STATUS_CONTROL_GROUP indicates that the PrerenderContents
-  // was created only to measure "would-have-been-prerendered" for
-  // control group measurements. Don't pollute data with it.
-  if (PrerenderManager::IsControlGroup() ||
-      final_status == FINAL_STATUS_CONTROL_GROUP)
-    return;
-  UMA_HISTOGRAM_ENUMERATION("Prerender.FinalStatus",
-                            final_status,
-                            FINAL_STATUS_MAX);
-  switch (origin) {
-    case ORIGIN_LINK_REL_PRERENDER:
-      UMA_HISTOGRAM_ENUMERATION("Prerender.FinalStatus_LinkRelPrerender",
-                                final_status,
-                                FINAL_STATUS_MAX);
-      break;
-    case ORIGIN_OMNIBOX:
-      UMA_HISTOGRAM_ENUMERATION("Prerender.FinalStatus_Omnibox",
-                                final_status,
-                                FINAL_STATUS_MAX);
-      break;
-    default:
-      NOTREACHED();
-      break;
-  };
-}
-
 const char* NameFromFinalStatus(FinalStatus final_status) {
   DCHECK(static_cast<int>(final_status) >= 0 &&
          static_cast<int>(final_status) <= FINAL_STATUS_MAX);
   return kFinalStatusNames[final_status];
 }
 
 }  // namespace prerender