In addition to the new Scan QR Code option, from the 3D Touch menu users can initiate a Voice Search, start a New Incognito Tab, open a regular New Tab, or open the most recent copied link. Users can also use Spotlight on iOS to search for "QR Code" and Chrome's "Scan QR Code" function will appear in the results list.
Additionally, the update has redesigned the tab switcher on the iPad version of Google Chrome, which the company says makes "it easier to access your open sites" within the app.
Google Chrome is available to download for free on the App Store. [Direct Link]