A relaunch session always re-opened the last edited file, even when the
app was closed sitting on the browser page. The snapshot now records
which page the app was on (SessionState.InBrowser/BrowserPath); the cmd
layer lands back in the browser at the saved directory on relaunch
(falling back to the startup directory if it has vanished) instead of
calling BeginRestore. Browser-page snapshots clear File, which also
makes the editor->browser transition an urgent save, so the
back-in-browser state hits disk immediately. Legacy session files (no
InBrowser key) unmarshal to false and restore the editor exactly as
before.
Verified on emulator and phone: editor sessions still restore the file
(cursor/scroll/font), browser sessions land in the browser at the saved
dir; legacy files keep the old behavior. New e2e regression test
TestRestore_BrowserPageSession.
Greg Pomerantz
e96464ec79