[Mac, Win] Show a user manager tutorial once per profile.

chrome/browser/prefs/browser_prefs.cc

Index: chrome/browser/prefs/browser_prefs.cc
diff --git a/chrome/browser/prefs/browser_prefs.cc b/chrome/browser/prefs/browser_prefs.cc
index d100644d07eca684f747fc17704cd4f8f95e6efb..c2fc95e0c1fe04af1341311eb60196b699215b3b 100644
--- a/chrome/browser/prefs/browser_prefs.cc
+++ b/chrome/browser/prefs/browser_prefs.cc
@@ -510,6 +510,10 @@ void RegisterNewProfileUIPrefs(user_prefs::PrefRegistrySyncable* registry) {
       prefs::kProfileAvatarTutorialShown,
       0,
       user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
+  registry->RegisterBooleanPref(

[gab, 2014/03/14 16:43:58]

The |registry| isn't typically invoked directly from this file, this file
delegates to all the various registrars for their features (it would be a
mega-mess if every feature had it's method here and registered it's prefs
directly in here).

Please move this to a Foo::RegisterProfilePrefs() call where "Foo" is relevant
to your feature (like all the other users of this file do).

[noms (inactive), 2014/03/14 18:24:36]

Done. Moved to profiles::RegisterTutorialPrefs()

On 2014/03/14 16:43:58, gab wrote:

+      prefs::kProfileUserManagerTutorialShown,
+      false,
+      user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
 }
 #endif