Fix a bug when saving web pages that have a period in their title

chrome/common/win_util.h

 // 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_COMMON_WIN_UTIL_H_
 #define CHROME_COMMON_WIN_UTIL_H_
 
 #include <objbase.h>
 
 #include <string>
@@ skipping 156 matching lines @@
 // Prompt the user for location to save a file.
 // Callers should provide the filter string, and also a filter index.
 // The parameter |index| indicates the initial index of filter description
 // and filter pattern for the dialog box. If |index| is zero or greater than
 // the number of total filter types, the system uses the first filter in the
 // |filter| buffer. |index| is used to specify the initial selected extension,
 // and when done contains the extension the user chose. The parameter
 // |final_name| returns the file name which contains the drive designator,
 // path, file name, and extension of the user selected file name. |def_ext| is
 // the default extension to give to the file if the user did not enter an
-// extension.
+// extension. If |ignore_suggested_ext| is true, any file extension contained in
+// |suggested_name| will not be used to generate the file name. This is useful
+// in the case of saving web pages, where we know the extension type already and
+// where |suggested_name| may contain a '.' character as a valid part of the
+// name, thus confusing our extension detection code.
 bool SaveFileAsWithFilter(HWND owner,
                           const std::wstring& suggested_name,
                           const std::wstring& filter,
                           const std::wstring& def_ext,
+                          bool ignore_suggested_ext,
                           unsigned* index,
                           std::wstring* final_name);
 
 // This function takes the output of a SaveAs dialog: a filename, a filter and
 // the extension originally suggested to the user (shown in the dialog box) and
 // returns back the filename with the appropriate extension tacked on. For
 // example, if you pass in 'foo' as filename with filter '*.jpg' this function
 // will return 'foo.jpg'. It respects MIME types, so if you pass in 'foo.jpeg'
 // with filer '*.jpg' it will return 'foo.jpeg' (will not append .jpg).
 // |filename| should contain the filename selected in the SaveAs dialog box and
@@ skipping 73 matching lines @@
                const std::wstring& text,
                const std::wstring& caption,
                UINT flags);
 
 // Returns the system set window title font.
 ChromeFont GetWindowTitleFont();
 
 }  // namespace win_util
 
 #endif  // CHROME_COMMON_WIN_UTIL_H_