Use std::unique_ptr instead of linked_ptr in //components/guest_view

components/guest_view/browser/test_guest_view_manager.h

 // Copyright 2014 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.
 
 #ifndef COMPONENTS_GUEST_VIEW_BROWSER_TEST_GUEST_VIEW_MANAGER_H_
 #define COMPONENTS_GUEST_VIEW_BROWSER_TEST_GUEST_VIEW_MANAGER_H_
 
 #include <stddef.h>
 
 #include <memory>
 
 #include "base/gtest_prod_util.h"
 #include "base/macros.h"
-#include "base/memory/linked_ptr.h"
 #include "components/guest_view/browser/guest_view_manager.h"
 #include "components/guest_view/browser/guest_view_manager_factory.h"
 #include "content/public/test/test_utils.h"
 
 namespace guest_view {
 
 class TestGuestViewManager : public GuestViewManager {
  public:
   TestGuestViewManager(content::BrowserContext* context,
                        std::unique_ptr<GuestViewManagerDelegate> delegate);
@@ skipping 68 matching lines @@
 
   using GuestViewManager::last_instance_id_removed_;
   using GuestViewManager::removed_instance_ids_;
 
   int num_embedder_processes_destroyed_;
   size_t num_guests_created_;
   size_t expected_num_guests_created_;
   int num_views_garbage_collected_;
   bool waiting_for_guests_created_;
 
-  std::vector<linked_ptr<content::WebContentsDestroyedWatcher>>
+  std::vector<std::unique_ptr<content::WebContentsDestroyedWatcher>>
       guest_web_contents_watchers_;
   scoped_refptr<content::MessageLoopRunner> created_message_loop_runner_;
   scoped_refptr<content::MessageLoopRunner> num_created_message_loop_runner_;
   scoped_refptr<content::MessageLoopRunner> gc_message_loop_runner_;
 
   DISALLOW_COPY_AND_ASSIGN(TestGuestViewManager);
 };
 
 // Test factory for creating test instances of GuestViewManager.
 class TestGuestViewManagerFactory : public GuestViewManagerFactory {
  public:
   TestGuestViewManagerFactory();
   ~TestGuestViewManagerFactory() override;
 
   GuestViewManager* CreateGuestViewManager(
       content::BrowserContext* context,
       std::unique_ptr<GuestViewManagerDelegate> delegate) override;
 
  private:
   TestGuestViewManager* test_guest_view_manager_;
 
   DISALLOW_COPY_AND_ASSIGN(TestGuestViewManagerFactory);
 };
 
 }  // namespace guest_view
 
 #endif  // COMPONENTS_GUEST_VIEW_BROWSER_TEST_GUEST_VIEW_MANAGER_H_