How to solve ""Your preferences cannot be read." in Google-chrome

I have received an error as followed:
“Your preferences cannot be read. Some features may be unavailable and changes to your preferences won’t be saved” on Google Chrome.

In an ubuntu os, How to solve it:
Maybe it is about rights.

1. change the dir to goole-chrome default

cd  ~/.config/google-chrome/Default

2. change right for all files in current path

sudo chmod 777 *

Ok, restart it and not any error appeared more.

As for other operate systems, the same is true as aboved.

    Mac OS X: ~/Library/Application Support/Google/Chrome/Default
 
    Windows 7: C:\Users\jianbao\AppData\Local\Google\Chrome\User Data\Default\
    Linux: ~/.config/google-chrome/Default