Set the save file type index properly

chrome/browser/cocoa/shell_dialogs_mac.mm

 // 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/shell_dialogs.h"
 
 #include <CoreServices/CoreServices.h>
 #import <Cocoa/Cocoa.h>
 #include <map>
 #include <set>
@@ skipping 308 matching lines @@
     if (type == SelectFileDialog::SELECT_SAVEAS_FILE) {
       paths.push_back(FilePath(base::SysNSStringToUTF8([panel filename])));
 
       NSView* accessoryView = [panel accessoryView];
       if (accessoryView) {
         NSPopUpButton* popup = [accessoryView viewWithTag:kFileTypePopupTag];
         if (popup) {
           // File type indexes are 1-based.
           index = [popup indexOfSelectedItem] + 1;
         }
+      } else {
+        index = 1;
       }
     } else {
       NSArray* filenames = [panel filenames];
       for (NSString* filename in filenames)
         paths.push_back(FilePath(base::SysNSStringToUTF8(filename)));
     }
   }
 
   selectFileDialogImpl_->FileWasSelected(panel,
                                          parentWindow,
                                          did_cancel,
                                          isMulti,
                                          paths,
                                          index);
 }
 
 @end