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diff --git a/chrome/browser/net/url_fixer_upper.h b/chrome/browser/net/url_fixer_upper.h
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+++ b/chrome/browser/net/url_fixer_upper.h
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+// Copyright (c) 2006-2008 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_URL_FIXER_UPPER_H__
+#define CHROME_BROWSER_URL_FIXER_UPPER_H__
+
+#include <string>
+
+#include "googleurl/src/url_parse.h"
+
+// This object is designed to convert various types of input into URLs that we
+// know are valid. For example, user typing in the URL bar or command line
+// options. This is NOT the place for converting between different types of
+// URLs or parsing them, see net_util.h for that.
+namespace URLFixerUpper {
+
+  // Segments the given text string into parts of a URL.  This is most useful
+  // for schemes such as http, https, and ftp where |SegmentURL| will find many
+  // segments.  Currently does not segment "file" schemes.
+  std::wstring SegmentURL(const std::wstring& text, url_parse::Parsed* parts);
+
+  // Converts |text| to a fixed-up URL and returns it. Attempts to make
+  // some "smart" adjustments to obviously-invalid input where possible.
+  // |text| may be an absolute path to a file, which will get converted to a
+  // "file:" URL.
+  //
+  // The result will be a "more" valid URL than the input. It may still not
+  // be valid, convert to a GURL for that.
+  //
+  // If |desired_tld| is non-empty, it represents the TLD the user wishes to
+  // append in the case of an incomplete domain.  We check that this is not a
+  // file path and there does not appear to be a valid TLD already, then append
+  // |desired_tld| to the domain and prepend "www." (unless it, or a scheme,
+  // are already present.)  This TLD should not have a leading '.' (use "com"
+  // instead of ".com").
+  std::wstring FixupURL(const std::wstring& text,
+                        const std::wstring& desired_tld);
+
+  // Converts |text| to a fixed-up URL, allowing it to be a relative path on
+  // the local filesystem.  Begin searching in |base_dir|; if empty, use the
+  // current working directory.  If this resolves to a file on disk, convert it
+  // to a "file:" URL in |fixed_up_url|; otherwise, fall back to the behavior
+  // of FixupURL().
+  //
+  // For "regular" input, even if it is possibly a file with a full path, you
+  // should use FixupURL() directly.  This function should only be used when
+  // relative path handling is desired, as for command line processing.
+  std::wstring FixupRelativeFile(const std::wstring& base_dir,
+                                 const std::wstring& text);
+};
+
+#endif  // #ifndef CHROME_BROWSER_URL_FIXER_UPPER_H__
+