Proposal: Embed WebView2 Control into a Scrollviewer and disable the Chromium-style scrolling by default

Summary

Due to the limited performance of Chromium WebView2 scrolling especially on touch screen or trackpad ，use UWP ScrollViewers to give a smoother scrolling similar to EdgeHTML WebView.

Rationale

• Chromium scrolling is not smooth enough to give a good experience to touch-screen and trackpad users.
• A ScrollViewer can give a scrolling experience similar to other UWP apps or the EdgeHTML WebView, to provide a continuous and immersive experience for al users.

• WebView2 is not optimized for touch inputs and trackpad .

Scope

| Capability | Priority |
| Use UWP ScrollViewer instead of WebView2 default | Must |
| Disable the scroll of WebView2 | Must |

Important Notes

UWPlize the experience of WebView2!