Revert 290030 "[Password Manager] Setup experiment to restrict a..."

trunk/src/chrome/browser/password_manager/sync_metrics.h

Index: trunk/src/chrome/browser/password_manager/sync_metrics.h
===================================================================
--- trunk/src/chrome/browser/password_manager/sync_metrics.h	(revision 290044)
+++ trunk/src/chrome/browser/password_manager/sync_metrics.h	(working copy)
@@ -12,9 +12,9 @@
 namespace password_manager_sync_metrics {
 
 // Returns the sync username for |profile|. Returns an empty string if the
-// |profile| isn't syncing. This function tries to return an empty string if
-// the user isn't syncing passwords, but it is not always possibly to determine
-// since this code can be called during sync setup (http://crbug.com/393626).
+// |profile| isn't syncing. It would be preferable to only return the username
+// if the user is syncing passwords, but that is not currently possible since
+// this function can be called during sync setup (http://crbug.com/393626).
 std::string GetSyncUsername(Profile* profile);
 
 // Returns true if |username| and |origin| correspond to the account which is