Revert "Revert "Take the input device into account for meta state""

This reverts commit 3954fd9a, which
is equivalent to re-applying 8a1597b3.

The change ("Take the input device into account for meta state") was
valid but caused CTS test failures because the test was wrong. The
test injected a key event with the meta state missing. This faulty
test was masked by the old toggle behavior.