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

chrome/browser/ui/browser_mac.cc

Index: chrome/browser/ui/browser_mac.cc
diff --git a/chrome/browser/ui/browser_mac.cc b/chrome/browser/ui/browser_mac.cc
index 6c66af657e6350a17a4d66a5bc61fc479ab65309..c7455fb081a5930525441937eb21b35ea66f98bc 100644
--- a/chrome/browser/ui/browser_mac.cc
+++ b/chrome/browser/ui/browser_mac.cc
@@ -51,7 +51,7 @@ void OpenOptionsWindow(Profile* profile) {
   browser->window()->Show();
 }
 
-void OpenSyncSetupWindow(Profile* profile, signin::Source source) {
+void OpenSyncSetupWindow(Profile* profile, signin_metrics::Source source) {
   Browser* browser =
       new Browser(Browser::CreateParams(profile,
                                         chrome::HOST_DESKTOP_TYPE_NATIVE));