Quick chrome extension

Hi, I need a quick chrome extension that will replace requested files with new ones. This extension will need to get a config of array (can be static): "old file path": "new file path", for example: "[login to view URL]" will show the user "[login to view URL]" Please note: I DON'T NEED YOU TO POINT ME TO AN EXISTING EXTENSION, I NEED IT TO BE A STANDALONE.