Move vulkan_android.h to be a textual header

See also http://cl/502568926

Change-Id: Ib4618970e87aa53f581e1c6579829ccc181170dc
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/630542
Reviewed-by: Ben Wagner <bungeman@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
1 file changed