Clean up straggler classes to use embedded signin in page in the new profiles world.

components/signin/core/browser/signin_metrics.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 "components/signin/core/browser/signin_metrics.h"
 
 #include "base/logging.h"
 #include "base/metrics/histogram.h"
 #include "base/metrics/user_metrics.h"
 #include "base/time/time.h"
@@ skipping 46 matching lines @@
   // Track whether or not the user signed in during the first run of Chrome.
   UMA_HISTOGRAM_BOOLEAN("Signin.DuringFirstRun", is_first_run);
 
   // Determine how much time passed since install when this profile was signed
   // in.
   base::TimeDelta elapsed_time = base::Time::Now() - install_date;
   UMA_HISTOGRAM_COUNTS("Signin.ElapsedTimeFromInstallToSignin",
                        elapsed_time.InMinutes());
 }
 
+void LogSigninSource(Source source) {
+  UMA_HISTOGRAM_ENUMERATION("Signin.SigninSource", source, HISTOGRAM_MAX);
+}
+
 void LogSigninAddAccount() {
   // Account signin may fail for a wide variety of reasons. There is no
   // explicit false, but one can compare this value with the various UI
   // flows that lead to account sign-in, and deduce that the difference
   // counts the failures.
   UMA_HISTOGRAM_BOOLEAN("Signin.AddAccount", true);
 }
 
 void LogSignout(ProfileSignout metric) {
   UMA_HISTOGRAM_ENUMERATION("Signin.SignoutProfile", metric,
@@ skipping 10 matching lines @@
         "Signin.Reconciler.ExternalCcResultTime.Completed",
         time_to_check_connections);
   } else {
     UMA_HISTOGRAM_TIMES(
         "Signin.Reconciler.ExternalCcResultTime.NotCompleted",
         time_to_check_connections);
   }
 }
 
 }  // namespace signin_metrics