Cleanup desktop NTP metrics recording

chrome/browser/ui/webui/ntp/ntp_user_data_logger.h

Index: chrome/browser/ui/webui/ntp/ntp_user_data_logger.h
diff --git a/chrome/browser/ui/webui/ntp/ntp_user_data_logger.h b/chrome/browser/ui/webui/ntp/ntp_user_data_logger.h
index 6187e3734cf83e1e6bb2424831af892b035dd0ca..9a543dd35727d94256592f0b06095cbfd1297385 100644
--- a/chrome/browser/ui/webui/ntp/ntp_user_data_logger.h
+++ b/chrome/browser/ui/webui/ntp/ntp_user_data_logger.h
@@ -34,8 +34,8 @@ class NTPUserDataLogger
       content::WebContents* content);
 
   // Called when an event occurs on the NTP that requires a counter to be
-  // incremented. |time| is the delta time in ms from navigation start until
-  // this event happened.
+  // incremented. |time| is the delta time from navigation start until this
+  // event happened.
   void LogEvent(NTPLoggingEventType event, base::TimeDelta time);
 
   // Logs an impression on one of the NTP tiles by a given source.
@@ -50,12 +50,6 @@ class NTPUserDataLogger
  private:
   friend class content::WebContentsUserData<NTPUserDataLogger>;
 
-  FRIEND_TEST_ALL_PREFIXES(SearchTabHelperTest,
-                           OnMostVisitedItemsChangedFromServer);
-  FRIEND_TEST_ALL_PREFIXES(SearchTabHelperTest,
-                           OnMostVisitedItemsChangedFromClient);
-  FRIEND_TEST_ALL_PREFIXES(NTPUserDataLoggerTest,
-                           TestLogging);
   FRIEND_TEST_ALL_PREFIXES(NTPUserDataLoggerTest, TestLogMostVisitedImpression);
   FRIEND_TEST_ALL_PREFIXES(NTPUserDataLoggerTest, TestNumberOfTiles);