Move remaining Autofill code to //components/autofill.

chrome/browser/autofill/autofill_scanner.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_AUTOFILL_AUTOFILL_SCANNER_H_
-#define CHROME_BROWSER_AUTOFILL_AUTOFILL_SCANNER_H_
-
-#include <vector>
-
-#include "base/basictypes.h"
-#include "base/string16.h"
-
-class AutofillField;
-
-// A helper class for parsing a stream of |AutofillField|'s with lookahead.
-class AutofillScanner {
- public:
-  explicit AutofillScanner(const std::vector<const AutofillField*>& fields);
-  ~AutofillScanner();
-
-  // Advances the cursor by one step, if possible.
-  void Advance();
-
-  // Returns the current field in the stream, or |NULL| if there are no more
-  // fields in the stream.
-  const AutofillField* Cursor() const;
-
-  // Returns |true| if the cursor has reached the end of the stream.
-  bool IsEnd() const;
-
-  // Restores the most recently saved cursor. See also |SaveCursor()|.
-  void Rewind();
-
-  // Repositions the cursor to the specified |index|. See also |SaveCursor()|.
-  void RewindTo(size_t index);
-
-  // Saves and returns the current cursor position. See also |Rewind()| and
-  // |RewindTo()|.
-  size_t SaveCursor();
-
- private:
-  // Indicates the current position in the stream, represented as a vector.
-  std::vector<const AutofillField*>::const_iterator cursor_;
-
-  // The most recently saved cursor.
-  std::vector<const AutofillField*>::const_iterator saved_cursor_;
-
-  // The beginning pointer for the stream.
-  const std::vector<const AutofillField*>::const_iterator begin_;
-
-  // The past-the-end pointer for the stream.
-  const std::vector<const AutofillField*>::const_iterator end_;
-
-  DISALLOW_COPY_AND_ASSIGN(AutofillScanner);
-};
-
-#endif  // CHROME_BROWSER_AUTOFILL_AUTOFILL_SCANNER_H_