Cronet Import: Sanitize filepath for JNI headers

--srcjar-path is now used for both jni_registration and jni headers.
https://source.chromium.org/chromium/chromium/src/+/main:third_party/jni_zero/jni_zero.py;l=63?q=extra-include&ss=chromium%2Fchromium%2Fsrc:third_party%2Fjni_zero%2F

Change-Id: Id32a64c06d38899ad7cf25d744d02e191c809326
1 file changed