Add a new method to the ProfileInfoCacheObserver for signin status changes.

BUG=332155
TBR=nkostylev@chromium.org
TEST=With the --new-profile-management flag set, start Chrome. Sign in
a profile, and choose "View all people" from the avatar bubble. With
the user manager window open, lock the profile. The user manager should
update the profile's pod with a lock icon.

Review URL: https://codereview.chromium.org/128553002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@243658 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/profiles/profile_info_cache.cc

@@ -705,6 +705,11 @@ void ProfileInfoCache::SetProfileSigninRequiredAtIndex(size_t index,
   info->SetBoolean(kSigninRequiredKey, value);
   // This takes ownership of |info|.
   SetInfoForProfileAtIndex(index, info.release());
+
+  base::FilePath profile_path = GetPathOfProfileAtIndex(index);
+  FOR_EACH_OBSERVER(ProfileInfoCacheObserver,
+                    observer_list_,
+                    OnProfileSigninRequiredChanged(profile_path));
 }
 
 void ProfileInfoCache::SetProfileIsEphemeralAtIndex(size_t index, bool value) {

chrome/browser/profiles/profile_info_cache_observer.h

@@ -25,6 +25,8 @@ class ProfileInfoCacheObserver {
   virtual void OnProfileNameChanged(const base::FilePath& profile_path,
                                     const base::string16& old_profile_name) {}
   virtual void OnProfileAvatarChanged(const base::FilePath& profile_path) {}
+  virtual void OnProfileSigninRequiredChanged(
+      const base::FilePath& profile_path) {}
 
  protected:
   ProfileInfoCacheObserver() {}

chrome/browser/ui/webui/signin/user_manager_screen_handler.cc

@@ -142,12 +142,6 @@ class UserManagerScreenHandler::ProfileUpdateObserver
     user_manager_handler_->SendUserList();
   }
 
-  virtual void OnProfileWillBeRemoved(
-      const base::FilePath& profile_path) OVERRIDE {
-    // No-op. When the profile is actually removed, OnProfileWasRemoved
-    // will be called.
-  }
-
   virtual void OnProfileNameChanged(
       const base::FilePath& profile_path,
       const base::string16& old_profile_name) OVERRIDE {
@@ -159,6 +153,11 @@ class UserManagerScreenHandler::ProfileUpdateObserver
     user_manager_handler_->SendUserList();
   }
 
+  virtual void OnProfileSigninRequiredChanged(
+      const base::FilePath& profile_path) OVERRIDE {
+    user_manager_handler_->SendUserList();
+  }
+
   ProfileManager* profile_manager_;
 
   UserManagerScreenHandler* user_manager_handler_;  // Weak; owns us.