I have some idea on creating Android WebView with custom behavior: https://www.chromium.org/developers/androidwebview/android-webview-beta
How can i create my WebView that can be set as default at system level by users? It seems that this is about replacing of system WebView (and i need to add my WebView to options list, not replace the system one). How can it be distributed and updated (does it require some special signing) without rooting?
There is a one time device set up to remove the existing webview. This is needed because it is not possible to install over the existing apk due to mismatched signing key.
Will it work if i just change the package and install it as regular apk? Can such apk be distributed in Google Play?
PS. I have experience in building of Chromium and creating Chromium fork.