Adds a new message counter to the page icon, and checks for new messages in the background automatically.
Changelog:
• 2.0.0 – updated for new GV
• 1.1.1 – optimizations
• 1.0.0 – initial release
Permissions:
• www.google.com – add tweaks GVoice page (https://www.google.com/voice and https://voice.google.com/)