Talvez esta postagem possa ajudar você: Alterar o domínio de pesquisa do Google em Google Chrome .
Instruções:
Close all Chrome windows.
Go to Chrome's user profile directory (for example, in Windows Vista and Windows 7 the path is: %LOCALAPPDATA%\Google\Chrome\User Data).
Open the file Local State in a text editor like Notepad, TextEdit or gedit.
Find the two lines that include "last_known_google_url" and "last_prompted_google_url" and change the Google URL from "http://www.google.tld/" (.tld=.co.uk, .fr, .co.jp etc.) to "http://www.google.com/" or any other Google domain.
Save the text file and restart Chrome.