Add metrics for new CBD dialog

chrome/browser/browsing_data/chrome_browsing_data_remover_delegate.cc

 // Copyright 2016 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/browsing_data/chrome_browsing_data_remover_delegate.h"
 
 #include <set>
 #include <string>
 #include <utility>
 
@@ skipping 710 matching lines @@
         }
       }
     }
 
     MediaDeviceIDSalt::Reset(profile_->GetPrefs());
   }
 
   //////////////////////////////////////////////////////////////////////////////
   // DATA_TYPE_CONTENT_SETTINGS
   if (remove_mask & DATA_TYPE_CONTENT_SETTINGS) {
+    base::RecordAction(UserMetricsAction("ClearBrowsingData_ContentSettings"));
     const auto* registry =
         content_settings::ContentSettingsRegistry::GetInstance();
     auto* map = HostContentSettingsMapFactory::GetForProfile(profile_);
     for (const content_settings::ContentSettingsInfo* info : *registry) {
       map->ClearSettingsForOneTypeWithPredicate(
           info->website_settings_info()->type(), delete_begin_,
           base::Bind(&WebsiteSettingsFilterAdapter, filter));
     }
   }
 
@@ skipping 452 matching lines @@
 }
 
 void ChromeBrowsingDataRemoverDelegate::
 OnDeauthorizeFlashContentLicensesCompleted(
     uint32_t request_id,
     bool /* success */) {
   DCHECK_EQ(request_id, deauthorize_flash_content_licenses_request_id_);
   clear_flash_content_licenses_.GetCompletionCallback().Run();
 }
 #endif