[ermine] Set flutter_driver_extendable using build arg.
Set the flutter driver enabling flag from a build argument instead
of hardcoding it. In debug build, flutter driver is enabled, but it
does not allow the app using it to consume keyboard input unless it
is coming from test scripts. This change allows using the app using
real keyboard input during development. To test using flutter driver
please set:
fx set workstation.x64 --args=flutter_driver_enabled=true
Change-Id: Ic12515b00cf1127b8987c933ad11065a68cd98cc
1 file changed
