Add patch to fix webview's NSView on Mac.

1. Avoid capturing key event to menu.
https://github.com/atom/atom-shell/issues/170

2. Enable accepting first mouse event.
https://github.com/atom/atom-shell/issues/212

3. Enable using transparent window.
https://github.com/atom/atom-shell/issues/949
Add patch to disable PR_SET_NO_NEW_PRIVS on child process.
Add patch to disable scroll elasticity.
Add patch to disable localStorage size limit
Add patch to allow showing transparent window