I used to use google chrome as default browser. One day I tried to use Google Cast extension to send my browser screen to chromecast, but I realized that my Chrome version was old. So I downloaded the debian package from google web site, but I ran on a dependency failure:

$ sudo dpkg -i /home/plinio/Downloads/google-chrome-stable_current_amd64.deb 
    (Reading database ... 195156 files and directories currently installed.)
    Preparing to replace google-chrome-stable 35.0.1916.114-1 (using .../google-chrome-stable_current_amd64.deb) ...
    Unpacking replacement google-chrome-stable ...
    dpkg: dependency problems prevent configuration of google-chrome-stable:
     google-chrome-stable depends on libnss3 (>= 3.14.3); however:
      Version of libnss3 on system is 3.14.1-0ckbi1.93ubuntu.0.12.04.1.
    dpkg: error processing google-chrome-stable (--install):
     dependency problems - leaving unconfigured
    Processing triggers for man-db ...
    Processing triggers for desktop-file-utils ...
    Processing triggers for bamfdaemon ...
    Rebuilding /usr/share/applications/bamf.index...
    Processing triggers for gnome-menus ...
    Errors were encountered while processing:
     google-chrome-stable

How to solve it? I had no success with Synaptc and Ubuntu Software Center as well.