To install magic keys in your chrome browser, follow the following steps.
=1= Install ARC welder in your chrome browser.
=4= Select the apk you downloaded at step 2/
=5= Do the settings as shown below:
=6= Launch the application "Launch App"
=7= You should now see Magic keys for chrome running in its own window
=8= Edit the primary key of your chrome installation so that it matches the root key of your Android installation.
WARNING: If you install again the chrome application, chrome will generate a new root key. If you do not synchronize your chrome installation with your android installation, take note of the first installation root key otherwise you will loose your password when you re-install magic keys in chrome. (for eg a manual update).