MD User Manager: Display error message when all profiles are locked.

chrome/browser/profiles/profiles_state.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/profiles/profiles_state.h"
 
 #include <stddef.h>
 
 #include "base/files/file_path.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 238 matching lines @@
   // We should never be saving the System Profile as the last one used since it
   // shouldn't have a browser.
   if (profile_dir == base::FilePath(chrome::kSystemProfileDir).AsUTF8Unsafe())
     return;
 
   PrefService* local_state = g_browser_process->local_state();
   DCHECK(local_state);
   local_state->SetString(prefs::kProfileLastUsed, profile_dir);
 }
 
+bool AreAllProfilesLocked() {
+  bool all_profiles_locked = true;
+
+  std::vector<ProfileAttributesEntry*> entries =
+      g_browser_process->profile_manager()->GetProfileAttributesStorage().
+          GetAllProfilesAttributes();
+  for (const ProfileAttributesEntry* entry : entries) {
+    if (entry->IsOmitted())
+      continue;
+
+    // Supervised and Child profiles cannot be locked.
+    if (!entry->IsSigninRequired() &&
+        !entry->IsChild() &&
+        !entry->IsLegacySupervised()) {
+      return false;
+    }
+  }
+  return all_profiles_locked;
+}
+
 }  // namespace profiles