This is only the first half of physical key event mapping. The
modifiers and hardware key codes will be in a followup CL. I'm
splitting this out because it covers two other parts of the problem:
first is maintaining a JNIEnv pointer for the main routine, the
second is access to the Android unicode key map. The NDK does not have
a method to give us the key mapping, so we get to it via
GoNativeActivity.
Tested with a USB keyboard. I'll attempt an abd-based unit test later,
but I suspect it will be difficult to set a device ID.
Change-Id: Ie93700d1f2a5d382a9b17cdd668cb4acaa6e4bcc
Reviewed-on: https://go-review.googlesource.com/13649
Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>
377063dfa4