Remove hit weight experiment

chrome/browser/prerender/prerender_histograms.cc

 // Copyright (c) 2012 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_histograms.h"
 
 #include <string>
 
 #include "base/metrics/field_trial.h"
 #include "base/metrics/histogram.h"
@@ skipping 30 matching lines @@
       return ComposeHistogramName("gws", name);
     return ComposeHistogramName("exp" + std::string(1, experiment_id + '0'),
                                 name);
   }
 
   if (experiment_id != kNoExperiment)
     return ComposeHistogramName("wash", name);
 
   switch (origin) {
     case ORIGIN_OMNIBOX:
-      return ComposeHistogramName(
-          StringPrintf("omnibox_%.1f",
-                       AutocompleteActionPredictor::get_hit_weight()).c_str(),
-          name);
+      return ComposeHistogramName("omnibox", name);
     case ORIGIN_LINK_REL_PRERENDER:
       return ComposeHistogramName("web", name);
     case ORIGIN_GWS_PRERENDER:  // Handled above.
     default:
       NOTREACHED();
       break;
   };
 
   // Dummy return value to make the compiler happy.
   NOTREACHED();
@@ skipping 82 matching lines @@
   // reset the window to begin at the most recent occurrence, so that we will
   // always be in a window in the 30 seconds from each occurrence.
   last_prerender_seen_time_ = GetCurrentTimeTicks();
   seen_any_pageload_ = false;
   seen_pageload_started_after_prerender_ = false;
 }
 
 void PrerenderHistograms::RecordPrerenderStarted(Origin origin) const {
   if (OriginIsOmnibox(origin)) {
     UMA_HISTOGRAM_COUNTS(
-        StringPrintf("Prerender.OmniboxPrerenderCount_%.1f%s",
-                     AutocompleteActionPredictor::get_hit_weight(),
+        StringPrintf("Prerender.OmniboxPrerenderCount_%s",
                      PrerenderManager::GetModeString()).c_str(),
         1);
   }
 }
 
 void PrerenderHistograms::RecordUsedPrerender(Origin origin) const {
   if (OriginIsOmnibox(origin)) {
     UMA_HISTOGRAM_COUNTS(
-        StringPrintf("Prerender.OmniboxNavigationsUsedPrerenderCount_%.1f%s",
-                     AutocompleteActionPredictor::get_hit_weight(),
+        StringPrintf("Prerender.OmniboxNavigationsUsedPrerenderCount_%s",
                      PrerenderManager::GetModeString()).c_str(),
         1);
   }
 }
 
 void PrerenderHistograms::RecordTimeSinceLastRecentVisit(
     base::TimeDelta delta) const {
   PREFIXED_HISTOGRAM(
       "TimeSinceLastRecentVisit",
       UMA_HISTOGRAM_TIMES(name, delta));
@@ skipping 202 matching lines @@
   return last_origin_;
 }
 
 bool PrerenderHistograms::IsOriginExperimentWash() const {
   if (!WithinWindow())
     return false;
   return origin_experiment_wash_;
 }
 
 }  // namespace prerender