Small chrome extension with limited features

Job ID: 34726022

Budget: $10 – $30 USD

I need a chrome extension that when I visit this website:
http://labelary.com/viewer.html

Will have these features:

Click the chrome extension icon: A window will display three buttons.

Button 1 with label "Browse" will be for choosing a text file with .vm extension from my local computer
Button 2 with label "Browse" will be for choosing a text file with "payload.json" name from my local computer
Button 3 with label "Process" will fetch the segment from the .vm file that begins with this character "^" and replace the variables that are like this: $!{payload.Address1} with the value from the payload.json file and paste it on the text area on: http://labelary.com/viewer.html

Please check attachment for reference files and before/after results.

and that's it.
Related categories: JavaScript Google Chrome