Reland of: Profile_Metrics integration with Keystone

chrome/browser/profiles/profile_metrics.h

Index: chrome/browser/profiles/profile_metrics.h
diff --git a/chrome/browser/profiles/profile_metrics.h b/chrome/browser/profiles/profile_metrics.h
index 7f1e2005ad68cd50558171f483259e87f951d76f..7a9f8445bf52962888b139769c2de0b4a81ba6c2 100644
--- a/chrome/browser/profiles/profile_metrics.h
+++ b/chrome/browser/profiles/profile_metrics.h
@@ -209,6 +209,11 @@ class ProfileMetrics {
                                       ProfileCounts* counts);
 
   static void LogNumberOfProfileSwitches();
+#if defined(OS_WIN) || defined(OS_MACOSX)
+  // Update OS level tracking of profile counts.
+  static void UpdateReportedOSProfileStatistics(size_t active, size_t signedin);
+#endif
+
   static void LogNumberOfProfiles(ProfileManager* manager);
   static void LogProfileAddNewUser(ProfileAdd metric);
   static void LogProfileAvatarSelection(size_t icon_index);