Move most importer code to chrome/utility/importer

chrome/browser/importer/importer.h

-// Copyright (c) 2011 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_IMPORTER_IMPORTER_H_
-#define CHROME_BROWSER_IMPORTER_IMPORTER_H_
-
-#include "base/basictypes.h"
-#include "base/memory/ref_counted.h"
-
-class ImporterBridge;
-
-namespace importer {
-struct SourceProfile;
-}
-
-// The base class of all importers.
-class Importer : public base::RefCountedThreadSafe<Importer> {
- public:
-  // All importers should implement this method by adding their import logic.
-  // And it will be run in file thread by ImporterHost. Since we do async
-  // import, the importer should invoke ImporterHost::NotifyImportEnded() to
-  // notify its host that import stuff have been finished.
-  virtual void StartImport(const importer::SourceProfile& source_profile,
-                           uint16 items,
-                           ImporterBridge* bridge) = 0;
-
-  // Cancels the import process.
-  virtual void Cancel();
-
-  bool cancelled() const { return cancelled_; }
-
- protected:
-  friend class base::RefCountedThreadSafe<Importer>;
-
-  Importer();
-  virtual ~Importer();
-
-  scoped_refptr<ImporterBridge> bridge_;
-
- private:
-  // True if the caller cancels the import process.
-  bool cancelled_;
-
-  DISALLOW_COPY_AND_ASSIGN(Importer);
-};
-
-#endif  // CHROME_BROWSER_IMPORTER_IMPORTER_H_