Make UMA_HISTOGRAM_ENUMERATION work with scoped enums.

chrome/browser/ui/page_info/page_info.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/ui/page_info/page_info.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <string>
@@ skipping 297 matching lines @@
                               action, PAGE_INFO_COUNT);
   }
 }
 
 void PageInfo::OnSitePermissionChanged(ContentSettingsType type,
                                        ContentSetting setting) {
   // Count how often a permission for a specific content type is changed using
   // the Page Info UI.
   size_t num_values;
   int histogram_value = ContentSettingTypeToHistogramValue(type, &num_values);
-  UMA_HISTOGRAM_ENUMERATION("WebsiteSettings.OriginInfo.PermissionChanged",
-                            histogram_value, num_values);
+  UMA_HISTOGRAM_EXACT_LINEAR("WebsiteSettings.OriginInfo.PermissionChanged",
+                             histogram_value, num_values);
 
   if (setting == ContentSetting::CONTENT_SETTING_ALLOW) {
-    UMA_HISTOGRAM_ENUMERATION(
+    UMA_HISTOGRAM_EXACT_LINEAR(
         "WebsiteSettings.OriginInfo.PermissionChanged.Allowed", histogram_value,
         num_values);
 
     if (type == CONTENT_SETTINGS_TYPE_PLUGINS) {
       rappor::SampleDomainAndRegistryFromGURL(
           g_browser_process->rappor_service(),
           "ContentSettings.Plugins.AddedAllowException", site_url_);
     }
   } else if (setting == ContentSetting::CONTENT_SETTING_BLOCK) {
-    UMA_HISTOGRAM_ENUMERATION(
+    UMA_HISTOGRAM_EXACT_LINEAR(
         "WebsiteSettings.OriginInfo.PermissionChanged.Blocked", histogram_value,
         num_values);
   }
 
   // This is technically redundant given the histogram above, but putting the
   // total count of permission changes in another histogram makes it easier to
   // compare it against other kinds of actions in PageInfo[PopupView].
   RecordPageInfoAction(PAGE_INFO_CHANGED_PERMISSION);
 
   PermissionUtil::ScopedRevocationReporter scoped_revocation_reporter(
@@ skipping 420 matching lines @@
     info.site_identity = UTF16ToUTF8(GetSimpleSiteName(site_url_));
 
   info.connection_status = site_connection_status_;
   info.connection_status_description = UTF16ToUTF8(site_connection_details_);
   info.identity_status = site_identity_status_;
   info.identity_status_description = UTF16ToUTF8(site_identity_details_);
   info.certificate = certificate_;
   info.show_ssl_decision_revoke_button = show_ssl_decision_revoke_button_;
   ui_->SetIdentityInfo(info);
 }