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

chrome/browser/profiles/profile_metrics.cc

Index: chrome/browser/profiles/profile_metrics.cc
diff --git a/chrome/browser/profiles/profile_metrics.cc b/chrome/browser/profiles/profile_metrics.cc
index 0804fd88b8de1a4f9306faa0cec4e890e09404e1..72c76ddff0e096be3ef2ab163e46d6d42118b4ae 100644
--- a/chrome/browser/profiles/profile_metrics.cc
+++ b/chrome/browser/profiles/profile_metrics.cc
@@ -12,6 +12,7 @@
 #include "chrome/browser/profiles/profile_info_cache.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/signin/signin_header_helper.h"
+#include "chrome/browser/ui/sync/one_click_signin_histogram.h"
 #include "chrome/common/chrome_constants.h"
 #include "chrome/installer/util/google_update_settings.h"
 #include "content/public/browser/browser_thread.h"
@@ -467,3 +468,9 @@ void ProfileMetrics::LogProfileUpdate(const base::FilePath& profile_path) {
                             GetProfileType(profile_path),
                             NUM_PROFILE_TYPE_METRICS);
 }
+
+void ProfileMetrics::LogSigninSource(signin::Source source) {
+  UMA_HISTOGRAM_ENUMERATION("Signin.SigninSource",
+                            source,
+                            one_click_signin::HISTOGRAM_MAX);
+}