Remove ScopedVector from ContentBrowserClient.

chrome/browser/sync_file_system/local/sync_file_system_backend.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_SYNC_FILE_SYSTEM_LOCAL_SYNC_FILE_SYSTEM_BACKEND_H_
 #define CHROME_BROWSER_SYNC_FILE_SYSTEM_LOCAL_SYNC_FILE_SYSTEM_BACKEND_H_
 
 #include <stdint.h>
 
+#include <memory>
+
 #include "base/macros.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/sync_file_system/sync_callbacks.h"
 #include "chrome/browser/sync_file_system/sync_status_code.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "storage/browser/fileapi/file_system_backend.h"
 #include "storage/browser/fileapi/file_system_quota_util.h"
 #include "storage/browser/fileapi/sandbox_file_system_backend_delegate.h"
 #include "storage/browser/fileapi/task_runner_bound_observer_list.h"
 
 namespace sync_file_system {
 
 class LocalFileChangeTracker;
 class LocalFileSyncContext;
 
 class SyncFileSystemBackend : public storage::FileSystemBackend {
  public:
   explicit SyncFileSystemBackend(Profile* profile);
   ~SyncFileSystemBackend() override;
 
-  static SyncFileSystemBackend* CreateForTesting();
+  static std::unique_ptr<SyncFileSystemBackend> CreateForTesting();
 
   // FileSystemBackend overrides.
   bool CanHandleType(storage::FileSystemType type) const override;
   void Initialize(storage::FileSystemContext* context) override;
   void ResolveURL(const storage::FileSystemURL& url,
                   storage::OpenFileSystemMode mode,
                   const OpenFileSystemCallback& callback) override;
   storage::AsyncFileUtil* GetAsyncFileUtil(
       storage::FileSystemType type) override;
   storage::WatcherManager* GetWatcherManager(
@@ skipping 78 matching lines @@
       storage::OpenFileSystemMode mode,
       const OpenFileSystemCallback& callback,
       SyncStatusCode status);
 
   DISALLOW_COPY_AND_ASSIGN(SyncFileSystemBackend);
 };
 
 }  // namespace sync_file_system
 
 #endif  // CHROME_BROWSER_SYNC_FILE_SYSTEM_LOCAL_SYNC_FILE_SYSTEM_BACKEND_H_