[epiphany] (8 commits) Non-fast-forward update to branch pgriffis/web-extension/no-ucm

[Patrick Griffis <pgriffis src gnome org>]

The branch 'pgriffis/web-extension/no-ucm' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  8865a81... WebExtensions: Generate background page if needed

Commits added to the branch:

  f83af58... WebExtensions: Implement runtime.getPlatformInfo() (*)
  9c427df... WebExtension: Stub out tabs.onReplaced (*)
  2414287... WebExtensions: Respect clipboardWrite permission (*)
  754d491... WebExtensions: Fix handling tabs replying to messages early (*)
  aa08bf1... WebExtensions: Add per extension UA overrides (*)
  15c5085... WebExtensions: Use private WebKitSettings (*)
  970f7b0... WebExtensions: Hardcode OS to "linux" (*)
  053ece5... WebExtensions: Generate background page if needed

(*) This commit already existed in another branch; no separate mail sent