ubuntu出现
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package chrome-gnome-shell is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
E: Package 'chrome-gnome-shell' has no installation candidate
解决办法：
```
sudo apt-get update
sudo apt-get upgrade
```
