Remove hit weight experiment

chrome/browser/prerender/prerender_histograms.cc

Index: chrome/browser/prerender/prerender_histograms.cc
diff --git a/chrome/browser/prerender/prerender_histograms.cc b/chrome/browser/prerender/prerender_histograms.cc
index f15060869c330ea8bd63942f0348e437f9c960fb..19b62c7da1e7683b4a1f6705a8c47062b09d3d54 100644
--- a/chrome/browser/prerender/prerender_histograms.cc
+++ b/chrome/browser/prerender/prerender_histograms.cc
@@ -48,10 +48,7 @@ std::string GetHistogramName(Origin origin, uint8 experiment_id,
 
   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.
@@ -154,8 +151,7 @@ void PrerenderHistograms::RecordPrerender(Origin origin, const GURL& url) {
 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);
   }
@@ -164,8 +160,7 @@ void PrerenderHistograms::RecordPrerenderStarted(Origin origin) const {
 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);
   }