Remove some linked_ptr c/b/extension

chrome/browser/extensions/api/storage/managed_value_store_cache.h

 // Copyright (c) 2012 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 CHROME_BROWSER_EXTENSIONS_API_STORAGE_MANAGED_VALUE_STORE_CACHE_H_
 #define CHROME_BROWSER_EXTENSIONS_API_STORAGE_MANAGED_VALUE_STORE_CACHE_H_
 
 #include <map>
 #include <memory>
 #include <string>
 
 #include "base/compiler_specific.h"
 #include "base/files/file_path.h"
 #include "base/macros.h"
-#include "base/memory/linked_ptr.h"
 #include "base/memory/ref_counted.h"
 #include "components/policy/core/common/policy_service.h"
 #include "extensions/browser/api/storage/settings_observer.h"
 #include "extensions/browser/api/storage/value_store_cache.h"
 
 class Profile;
 
 namespace content {
 class BrowserContext;
 }
@@ skipping 18 matching lines @@
   // |observers| is the list of SettingsObservers to notify when a ValueStore
   // changes.
   ManagedValueStoreCache(content::BrowserContext* context,
                          const scoped_refptr<ValueStoreFactory>& factory,
                          const scoped_refptr<SettingsObserverList>& observers);
   ~ManagedValueStoreCache() override;
 
  private:
   class ExtensionTracker;
 
-  // Maps an extension ID to its PolicyValueStoreMap.
-  typedef std::map<std::string, linked_ptr<PolicyValueStore> >
-      PolicyValueStoreMap;
-
   // ValueStoreCache implementation:
   void ShutdownOnUI() override;
   void RunWithValueStoreForExtension(
       const StorageCallback& callback,
       scoped_refptr<const Extension> extension) override;
   void DeleteStorageSoon(const std::string& extension_id) override;
 
   // PolicyService::Observer implementation:
   void OnPolicyServiceInitialized(policy::PolicyDomain domain) override;
   void OnPolicyUpdated(const policy::PolicyNamespace& ns,
@@ skipping 21 matching lines @@
   // Observes extension loading and unloading, and keeps the Profile's
   // PolicyService aware of the current list of extensions.
   std::unique_ptr<ExtensionTracker> extension_tracker_;
 
   // These live on the FILE thread.
   scoped_refptr<ValueStoreFactory> storage_factory_;
   scoped_refptr<SettingsObserverList> observers_;
 
   // All the PolicyValueStores live on the FILE thread, and |store_map_| can be
   // accessed only on the FILE thread as well.
-  PolicyValueStoreMap store_map_;
+  std::map<std::string, std::unique_ptr<PolicyValueStore>> store_map_;
 
   DISALLOW_COPY_AND_ASSIGN(ManagedValueStoreCache);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_STORAGE_MANAGED_VALUE_STORE_CACHE_H_