CrOS - Fix crash when pressing Enter in file browser dialog

chrome/browser/resources/file_manager/js/file_manager.js

 // 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.
 
 // WK Bug 55728 is fixed on the chrome 12 branch but not on the trunk.
 // TODO(rginda): Enable this everywhere once we have a trunk-worthy fix.
 const ENABLE_METADATA = true;
 
 // Thumbnail view is painful without the exif reader.
 const ENABLE_THUMBNAIL_VIEW = ENABLE_METADATA;
@@ skipping 1994 matching lines @@
         if (path && path != '/') {
           var path = path.replace(/\/[^\/]+$/, '');
           this.changeDirectory(path || '/');
         }
         break;
 
       case 13:  // Enter => Change directory or complete dialog.
         if (this.selection.totalCount == 1 &&
             this.selection.leadEntry.isDirectory &&
             this.dialogType_ != FileManager.SELECT_FOLDER) {
+          event.preventDefault();
           this.changeDirectory(this.selection.leadEntry.fullPath);
         } else if (!this.okButton_.disabled) {
+          event.preventDefault();
           this.onOk_();
         }
         break;
 
       case 27:  // Escape => Cancel dialog.
         event.preventDefault();
         this.onCancel_();
         break;
 
       case 32:  // Ctrl-Space => New Folder.
@@ skipping 100 matching lines @@
     } else if (this.dialogType_ == FileManager.DialogType.SELECT_OPEN_FILE) {
       if (!this.selection.leadEntry.isFile)
         throw new Error('Selected entry is not a file!');
     }
 
     chrome.fileBrowserPrivate.selectFile(ary[0], 0);
     window.close();
   };
 
 })();