Relayout when base inner insets change

When using SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN and
fitsSystemWindows="true", there are cases when the
inner insets will change but the content insets will
remain the same.

One case where this happens is when using
windowSoftInputMode="adjustResize|stateHidden",
bringing the keyboard up, hitting the Recents button,
then going back into the app.

By issuing a requestLayout when the base inner insets
change, we ensure that the inner layout is properly
updated, avoiding an empty space where they keyboard
used to be.

Test: Run app from b/37743589#comment6

BUG: 37743589
Change-Id: I7615c51b8f4eee3971b9b95e638011c1d885b3a6
1 file changed