Fix import of chromium into webrtc.
Fix import of chromium into webrtc.

Chromium jni generator was updated, so we need to sync our header with
chromium one, which located here:
https://cs.chromium.org/chromium/src/base/android/jni_generator/jni_generator_helper.h

Generator was updated in CL:
https://chromium-review.googlesource.com/c/chromium/src/+/1296827

BUG=NONE

Change-Id: Ib07f86d2e5490467771aa7d5e4eb5d8f7075e16e
Reviewed-on: https://webrtc-review.googlesource.com/c/108340
Reviewed-by: Patrik Höglund <b486136ee68458b09c92c86c39f451c87d6ef6a1@webrtc.org>
Reviewed-by: Magnus Jedvert <9507adee858471ab168c339dc72b814b168c081b@webrtc.org>
Commit-Queue: Artem Titov <1e27363ccc366a7ff0fdde48204d68d5ebfeccc5@webrtc.org>
Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#25414}
ShiftMediaProject/libilbc,TimothyGu/libilbc,TimothyGu/libilbc,TimothyGu/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc,ShiftMediaProject/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc