Supervised users: Add histogram to record filtering results

chrome/browser/supervised_user/supervised_user_url_filter.cc

Index: chrome/browser/supervised_user/supervised_user_url_filter.cc
diff --git a/chrome/browser/supervised_user/supervised_user_url_filter.cc b/chrome/browser/supervised_user/supervised_user_url_filter.cc
index 5305ee2940f5dcd8b396c2656fdfeeccb9b5783d..b08be1233ed1e5443eba2f6bd1b73ae9975e1c7c 100644
--- a/chrome/browser/supervised_user/supervised_user_url_filter.cc
+++ b/chrome/browser/supervised_user/supervised_user_url_filter.cc
@@ -10,7 +10,6 @@
 #include "base/containers/hash_tables.h"
 #include "base/files/file_path.h"
 #include "base/json/json_file_value_serializer.h"
-#include "base/metrics/histogram.h"
 #include "base/sha1.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_util.h"
@@ -417,16 +416,12 @@ void SupervisedUserURLFilter::SetManualHosts(
     const std::map<std::string, bool>* host_map) {
   DCHECK(CalledOnValidThread());
   host_map_ = *host_map;
-  UMA_HISTOGRAM_CUSTOM_COUNTS("ManagedMode.ManualHostsEntries",

[Marc Treib, 2015/03/31 09:01:18]

As far as I can tell, these were never defined in the data files. If no one has
missed them so far, then we probably don't need them (or we're just getting the
data from the dashboard).

-                              host_map->size(), 1, 1000, 50);
 }
 
 void SupervisedUserURLFilter::SetManualURLs(
     const std::map<GURL, bool>* url_map) {
   DCHECK(CalledOnValidThread());
   url_map_ = *url_map;
-  UMA_HISTOGRAM_CUSTOM_COUNTS("ManagedMode.ManualURLsEntries",
-                              url_map->size(), 1, 1000, 50);
 }
 
 void SupervisedUserURLFilter::InitAsyncURLChecker(