Mandate unique_ptr for base::IDMap in IDMapOwnPointer mode.

storage/browser/fileapi/file_system_operation_runner.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 STORAGE_BROWSER_FILEAPI_FILE_SYSTEM_OPERATION_RUNNER_H_
 #define STORAGE_BROWSER_FILEAPI_FILE_SYSTEM_OPERATION_RUNNER_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 282 matching lines @@
                       const CopyProgressCallback& callback,
                       FileSystemOperation::CopyProgressType type,
                       const FileSystemURL& source_url,
                       const FileSystemURL& dest_url,
                       int64_t size);
 
   void PrepareForWrite(OperationID id, const FileSystemURL& url);
   void PrepareForRead(OperationID id, const FileSystemURL& url);
 
   // These must be called at the beginning and end of any async operations.
-  OperationHandle BeginOperation(FileSystemOperation* operation,
+  OperationHandle BeginOperation(std::unique_ptr<FileSystemOperation> operation,
                                  base::WeakPtr<BeginOperationScoper> scope);
   void FinishOperation(OperationID id);
 
   // Not owned; file_system_context owns this.
   FileSystemContext* file_system_context_;
 
   // IDMap<FileSystemOperation, IDMapOwnPointer> operations_;
   IDMap<FileSystemOperation, IDMapOwnPointer> operations_;
 
   // We keep track of the file to be modified by each operation so that
   // we can notify observers when we're done.
   typedef std::map<OperationID, FileSystemURLSet> OperationToURLSet;
   OperationToURLSet write_target_urls_;
 
   // Operations that are finished but not yet fire their callbacks.
   std::set<OperationID> finished_operations_;
 
   // Callbacks for stray cancels whose target operation is already finished.
   std::map<OperationID, StatusCallback> stray_cancel_callbacks_;
 
   DISALLOW_COPY_AND_ASSIGN(FileSystemOperationRunner);
 };
 
 }  // namespace storage
 
 #endif  // STORAGE_BROWSER_FILEAPI_FILE_SYSTEM_OPERATION_RUNNER_H_