The "Destination" field is correct. On the "Compatibility" box "Run this program in so ...." tab should be disabled so the OS options You'll see faded, it's normal.
Have you tried to change the default search engine? I leave the steps:
Click the Chrome menu [IMG] located in the toolbar of the browser.
Select Settings and scroll to the "Search" section.
Click Manage Search Engines.
To remove a search engine, select it and click the "x" shown at the right end of the row.
Then set your favorite search engine:
Click the Chrome menu [IMG] on the browser toolbar.
Select Settings.
In the "Search" section, select the search engine you want to use from the menu. If the search engine you want to use is not listed on the menu, click Manage Search Engines ...
In the dialog box "Search Engines" in the list select the search engine you like to use.
Click the Set Default button.
But if you still can not change you should use this tool to see if you can remove the unwanted of Chrome, it's simple: AdwCleaner
Try and tell us. Regards,