Update docs for ProfileManager::GetActive/GetPrimaryUserProfile

These functions are used in hundreds of locations in the code base and
there's no ongoing effort to deprecate them. New developers are
sometimes confused when they write code that must use these functions.
Delete the comments discouraging their usage.

Bug: none
Change-Id: I4d40956edc6168340a361b762eb741723d47c8d0
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2404949
Commit-Queue: James Cook <jamescook@chromium.org>
Commit-Queue: Stefan Kuhne <skuhne@chromium.org>
Reviewed-by: Stefan Kuhne <skuhne@chromium.org>
Cr-Commit-Position: refs/heads/master@{#805986}

chrome/browser/profiles/profile_manager.h

@@ -73,16 +73,10 @@ class ProfileManager : public content::NotificationObserver,
 
   // Get the profile for the user which created the current session.
   // Note that in case of a guest account this will return a 'suitable' profile.
-  // This function is temporary and will soon be moved to ash. As such avoid
-  // using it at all cost.
-  // TODO(skuhne): Move into ash's new user management function.
   static Profile* GetPrimaryUserProfile();
 
   // Get the profile for the currently active user.
   // Note that in case of a guest account this will return a 'suitable' profile.
-  // This function is temporary and will soon be moved to ash. As such avoid
-  // using it at all cost.
-  // TODO(skuhne): Move into ash's new user management function.
   static Profile* GetActiveUserProfile();
 
   // Load and return the initial profile for browser. On ChromeOS, this returns