Adding <keygen> Content Setting (core)

components/content_settings/core/browser/content_settings_default_provider.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 "components/content_settings/core/browser/content_settings_default_provider.h"
 
 #include <string>
 #include <vector>
 
 #include "base/auto_reset.h"
@@ skipping 176 matching lines @@
   UMA_HISTOGRAM_ENUMERATION(
       "ContentSettings.DefaultMIDISysExSetting",
       IntToContentSetting(prefs_->GetInteger(
           GetPrefName(CONTENT_SETTINGS_TYPE_MIDI_SYSEX))),
       CONTENT_SETTING_NUM_SETTINGS);
   UMA_HISTOGRAM_ENUMERATION(
       "ContentSettings.DefaultPushMessagingSetting",
       IntToContentSetting(prefs_->GetInteger(
           GetPrefName(CONTENT_SETTINGS_TYPE_PUSH_MESSAGING))),
       CONTENT_SETTING_NUM_SETTINGS);
+  UMA_HISTOGRAM_ENUMERATION(
+      "ContentSettings.DefaultKeygenSetting",
+      IntToContentSetting(prefs_->GetInteger(
+          GetPrefName(CONTENT_SETTINGS_TYPE_KEYGEN))),
+      CONTENT_SETTING_NUM_SETTINGS);
 
   pref_change_registrar_.Init(prefs_);
   PrefChangeRegistrar::NamedChangeCallback callback = base::Bind(
       &DefaultProvider::OnPreferenceChanged, base::Unretained(this));
   WebsiteSettingsRegistry* website_settings =
       WebsiteSettingsRegistry::GetInstance();
   for (const WebsiteSettingsInfo* info : *website_settings)
     pref_change_registrar_.Add(info->default_value_pref_name(), callback);
 }
 
@@ skipping 160 matching lines @@
 }
 
 void DefaultProvider::DiscardObsoletePreferences() {
   prefs_->ClearPref(kObsoleteDefaultContentSettings);
   prefs_->ClearPref(kObsoleteMigratedDefaultContentSettings);
   prefs_->ClearPref(kObsoleteMigratedDefaultMediaStreamSetting);
   prefs_->ClearPref(kObsoleteMetroSwitchToDesktopSetting);
 }
 
 }  // namespace content_settings