FloatingActionMode: Fix screen coordinates.

Use application context to get the screen's display metrics.

Bug: 30127070
Change-Id: I2c453c494ef210c12d89fc7e3ff026728f9ecb0f
(cherry picked from commit afb38c5cc4226ce82367015f4ce52765018226d6)
(cherry picked from commit 99c340cad9ec79128a32a39416a5764a34aa362b)
1 file changed