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

chrome/browser/download/save_package.cc

 // 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.
 
 #include "chrome/browser/download/save_package.h"
 
 #include "base/file_util.h"
 #include "base/logging.h"
 #include "base/message_loop.h"
 #include "base/path_service.h"
@@ skipping 929 matching lines @@
   // If the contents can not be saved as complete-HTML, do not show the
   // file filters.
   if (CanSaveAsComplete(param->current_tab_mime_type)) {
     // Create filter string.
     std::wstring filter = l10n_util::GetString(IDS_SAVE_PAGE_FILTER);
     filter.resize(filter.size() + 2);
     filter[filter.size() - 1] = L'\0';
     filter[filter.size() - 2] = L'\0';
 
     if (g_should_prompt_for_filename) {
+      // Since we take the suggested name from the web page's title, we want to
+      // ignore the file extension generated by SaveFileAsWithFilter, since it
+      // will always be ".htm".
       if (!win_util::SaveFileAsWithFilter(container_hwnd,
                                           suggest_name,
                                           filter,
                                           L"htm",
+                                          true,
                                           &index,
                                           &param->saved_main_file_path))
         return false;
     } else {
       param->saved_main_file_path = suggest_name;
     }
   } else {
     if (g_should_prompt_for_filename) {
       if (!win_util::SaveFileAs(container_hwnd, suggest_name,
                                 &param->saved_main_file_path))
@@ skipping 129 matching lines @@
 
   if (available_length > dir_path_length) {
     *pure_file_name =
         pure_file_name->substr(0, available_length - dir_path_length);
     return true;
   } else {
     pure_file_name->clear();
     return false;
   }
 }