Follow up for issue 490583 for changing histogram name and enum name for notification..

chrome/browser/notifications/platform_notification_service_impl.cc

 // Copyright 2014 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/notifications/platform_notification_service_impl.h"
 
 #include "base/metrics/histogram_macros.h"
 #include "base/prefs/pref_service.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/browser_process.h"
@@ skipping 35 matching lines @@
 using content::BrowserContext;
 using content::BrowserThread;
 using content::PlatformNotificationContext;
 using message_center::NotifierId;
 
 namespace {
 
 // Callback to provide when deleting the data associated with persistent Web
 // Notifications from the notification database.
 void OnPersistentNotificationDataDeleted(bool success) {
-  UMA_HISTOGRAM_BOOLEAN(
-      "ServiceWorker.PlatformNotificationService."
-      "PersistentNotificationDataDeleted", success);
+  UMA_HISTOGRAM_BOOLEAN("Notifications.PersistentNotificationDataDeleted",
+      success);
 }
 
 // Persistent notifications fired through the delegate do not care about the
 // lifetime of the Service Worker responsible for executing the event.
 void OnEventDispatchComplete(content::PersistentNotificationStatus status) {
   UMA_HISTOGRAM_ENUMERATION(
-      "ServiceWorker.PlatformNotificationService."
-      "PersistentWebNotificationClickResult",
-      status, content::PersistentNotificationStatus::
+      "Notifications.PersistentWebNotificationClickResult", status,
+      content::PersistentNotificationStatus::
           PERSISTENT_NOTIFICATION_STATUS_MAX);
 }
 
 void CancelNotification(const std::string& id, ProfileID profile_id) {
   PlatformNotificationServiceImpl::GetInstance()
       ->GetNotificationUIManager()->CancelById(id, profile_id);
 }
 
 }  // namespace
 
@@ skipping 334 matching lines @@
       formatted_origin.push_back(':');
       formatted_origin.append(base::UTF8ToUTF16(origin.port()));
     }
     return formatted_origin;
   }
 
   // TODO(dewittj): Once file:// URLs are passed in to the origin
   // GURL here, begin returning the path as the display name.
   return net::FormatUrl(origin, languages);
 }