Support for web APIs that require permissions

[nklayman]

Is your feature request related to a problem? Please describe.
Currently (at least on Linux), doing any action that requires permission (such as geolocation) fails as the permission request is immediately denied.

Describe the solution you'd like
There should be a way to specify what permissions the app should have so they are automatically allowed.

Would you assign yourself to implement this feature?

• Yes (at least for Linux and maybe windows)
• No

Additional context
For linux: https://webkitgtk.org/reference/webkit2gtk/stable/WebKitWebView.html#WebKitWebView-permission-request

[wusyong]

We also already enable some permissions required featured like clipboard on Windows already.
https://github.com/tauri-apps/wry/blob/dev/src/webview/win32/mod.rs#L154

I couldn't find similar option on mac. And it seems lots of permission related features are not available to WkWebView.
Edit: looks like this is an on-going feature to be implemented. Future custom protocol will be treated as secure content.
https://bugs.webkit.org/show_bug.cgi?id=220184

[nothingismagick]

I think we did as good as we can do here, especially now that webrtc is working on macos, i think we are good.

[lemarier]

We should try with the localhost fix as it use same engine as macOS webview

[wusyong]

Reopen it until the PR is delivered

[nklayman]

It appears that PR didn't quite solve the issue I was referring to. There still doesn't seem to be a way to allow prompting for web APIs such as geolocation. If you try to use it inside Tauri (on Linux at least) it just fails immediately. If you use epiphany which also uses webkit2gtk, it prompts for location permissions. I think we should offer a way to prompt for or automatically allow certain permissions.