Fix MediaClient::RequestCaptureState().

chrome/browser/ui/ash/chrome_shell_content_state_chromeos.cc

 // Copyright 2015 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/ui/ash/chrome_shell_content_state.h"
 
-#include "ash/common/session/session_state_delegate.h"
-#include "ash/common/wm_shell.h"
 #include "chrome/browser/chromeos/profiles/profile_helper.h"
 #include "chrome/browser/ui/ash/multi_user/multi_user_util.h"
 #include "chrome/browser/ui/ash/multi_user/multi_user_window_manager.h"
 #include "components/signin/core/account_id/account_id.h"
 #include "components/user_manager/user_manager.h"
 #include "content/public/browser/browser_context.h"
 
 content::BrowserContext* ChromeShellContentState::GetBrowserContextByIndex(
     ash::UserIndex index) {
-  ash::SessionStateDelegate* session_state_delegate =
-      ash::WmShell::Get()->GetSessionStateDelegate();
-  DCHECK_LT(index, session_state_delegate->NumberOfLoggedInUsers());
+  DCHECK_LT(static_cast<size_t>(index),
+            user_manager::UserManager::Get()->GetLoggedInUsers().size());
   user_manager::User* user =
       user_manager::UserManager::Get()->GetLRULoggedInUsers()[index];
   CHECK(user);
   return chromeos::ProfileHelper::Get()->GetProfileByUser(user);
 }
 
 content::BrowserContext* ChromeShellContentState::GetBrowserContextForWindow(
     aura::Window* window) {
   DCHECK(window);
   // Speculative fix for multi-profile crash. crbug.com/661821
@@ skipping 15 matching lines @@
   if (!chrome::MultiUserWindowManager::GetInstance())
     return nullptr;
 
   const AccountId& account_id =
       chrome::MultiUserWindowManager::GetInstance()->GetUserPresentingWindow(
           window);
   return account_id.is_valid()
              ? multi_user_util::GetProfileFromAccountId(account_id)
              : nullptr;
 }