Remove most ScopedVector usage from c/b/extensions.

chrome/browser/extensions/api/signed_in_devices/signed_in_devices_manager.h

 // 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.
 
 #ifndef CHROME_BROWSER_EXTENSIONS_API_SIGNED_IN_DEVICES_SIGNED_IN_DEVICES_MANAGER_H__
 #define CHROME_BROWSER_EXTENSIONS_API_SIGNED_IN_DEVICES_SIGNED_IN_DEVICES_MANAGER_H__
 
 #include <string>
 
 #include "base/gtest_prod_util.h"
 #include "base/macros.h"
-#include "base/memory/scoped_vector.h"
 #include "base/scoped_observer.h"
 #include "components/sync/device_info/device_info_tracker.h"
 #include "extensions/browser/browser_context_keyed_api_factory.h"
 #include "extensions/browser/event_router.h"
 #include "extensions/browser/extension_registry_observer.h"
 
 class Profile;
 
 namespace content {
 class BrowserContext;
@@ skipping 61 matching lines @@
 
   // BrowserContextKeyedAPI implementation.
   static const char* service_name() {
     return "SignedInDevicesManager";
   }
   static const bool kServiceHasOwnInstanceInIncognito = true;
 
   void RemoveChangeObserverForExtension(const std::string& extension_id);
 
   Profile* const profile_;
-  ScopedVector<SignedInDevicesChangeObserver> change_observers_;
+  std::vector<std::unique_ptr<SignedInDevicesChangeObserver>> change_observers_;
 
   // Listen to extension unloaded notification.
   ScopedObserver<ExtensionRegistry, ExtensionRegistryObserver>
       extension_registry_observer_;
 
   FRIEND_TEST_ALL_PREFIXES(SignedInDevicesManager, UpdateListener);
 
   DISALLOW_COPY_AND_ASSIGN(SignedInDevicesManager);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_SIGNED_IN_DEVICES_SIGNED_IN_DEVICES_MANAGER_H__