Upgrade VR Keyboard apk to 1.13

Regular upgrade to the most recent public release APK. Done separately
from the other APK upgrades to make it easier to identify perf
regressions caused by a particular APK upgrade.

Change-Id: If8e2e7d6df94dd41f0b6ca5e8ace0056617a6b60
Reviewed-on: https://chromium-review.googlesource.com/943834Reviewed-by: Brandon Jones <bajones@chromium.org>
Commit-Queue: Brian Sheedy <bsheedy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#540957}

third_party/gvr-android-sdk/test-apks/vr_keyboard/apk_version_history.txt

-v1.12 a31ceb898c8179e8bda976ff45e497848b9ba0be
+v1.12 a31ceb898c8179e8bda976ff45e497848b9ba0be
\ No newline at end of file
+v1.13 0fe388ce58b14909cdc9ee045f07076581491629

third_party/gvr-android-sdk/test-apks/vr_keyboard/vr_keyboard_current.apk.sha1

-a31ceb898c8179e8bda976ff45e497848b9ba0be
+0fe388ce58b14909cdc9ee045f07076581491629
\ No newline at end of file