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

chrome/browser/profiles/profile_window.h

Index: chrome/browser/profiles/profile_window.h
diff --git a/chrome/browser/profiles/profile_window.h b/chrome/browser/profiles/profile_window.h
index 3c5510f8fed6f30566ff9e61169978b9b9270382..a31d023a7cbd56e5a1ed7b03621a6ab9df571a2e 100644
--- a/chrome/browser/profiles/profile_window.h
+++ b/chrome/browser/profiles/profile_window.h
@@ -18,6 +18,13 @@ namespace profiles {
 // Callback to be used when switching to a new profile is completed.
 typedef base::Callback<void()> ProfileSwitchingDoneCallback;
 
+// Different tutorials that can be displayed in the user manager.
+enum UserManagerTutorialMode {
+  USER_MANAGER_NO_TUTORIAL,        // Does not display a tutorial.
+  USER_MANAGER_TUTORIAL_OVERVIEW,  // Basic overview of new features.
+  USER_MANAGER_TUTORIAL_LOCK       // Not yet implemented.
+};
+
 // Activates a window for |profile| on the desktop specified by
 // |desktop_type|. If no such window yet exists, or if |always_create| is
 // true, this first creates a new window, then activates
@@ -59,6 +66,16 @@ void CloseGuestProfileWindows();
 // Closes all the browser windows for |profile| and opens the user manager.
 void LockProfile(Profile* profile);
 
+// Creates or reuses the guest profile needed by the user manager. Based on
+// the value of |tutorial_mode|, it can show a tutorial. If a tutorial is
+// not shown, |profile_path_to_focus| could be used to specify which user
+// pod should be focused. |callback| is ran once the custom url for the

[Alexei Svitkine (slow), 2014/03/18 15:50:33]

 What's a user pod?

[noms (inactive), 2014/03/19 15:58:20]

Done.

+// user manager has been decided.

[Alexei Svitkine (slow), 2014/03/18 15:50:33]

Can you document what the second param of the callback is?

[noms (inactive), 2014/03/19 15:58:20]

I thought it was already documented, but I've expanded the comment.
On 2014/03/18 15:50:33, Alexei Svitkine wrote:

[Alexei Svitkine (slow), 2014/03/19 16:37:01]

I meant the 2nd param of |callback|, not the 2nd param of
|CreateGuestProfileForUserManager|. Make the comment explicitly say that its the
URL somewhere.

On 2014/03/19 15:58:20, Monica Dinculescu wrote:

[noms (inactive), 2014/03/19 17:10:38]

Done.

+void CreateGuestProfileForUserManager(
+    const base::FilePath& profile_path_to_focus,
+    profiles::UserManagerTutorialMode tutorial_mode,
+    const base::Callback<void(Profile*, const std::string&)>& callback);
+
 }  // namespace profiles
 
 #endif  // CHROME_BROWSER_PROFILES_PROFILE_WINDOW_H_